Sinodrills Development

from its establishment to the present

贵州中钻机械设备有限公司（以下简称贵州中钻）是一家以国际市场为导向，专注于提供凿岩钻具整体解决方案的专业供应商。公司前身是创立于2002年的贵州华捷化工有限公司机械设备分公司，于2006年独立成为现在的贵州中钻机械设备有限公司。经过20多年的发展，贵州中钻已发展成集研发，生产和销售为一体的专业化凿岩钻具供应商。公司旗下拥有两家生产企业：武穴市中锷机械设备有限公司和武穴市薪传新材料有限公司，其中武穴市薪传新材料有限公司为国家高新技术认证企业。贵州中钻致力于提供一站式凿岩钻具解决方案，公司产品包括以下四大系列：

• 顶锤式钻具

• 潜孔钻具

• 岩土工程钻具

• 旋回式钻具

贵州中钻全面遵循ISO9001国际质量管理体系，始终坚持诚信经营的原则，自2016年起一直被国际著名信用评级机构邓白氏认定为3A企业。贵州中钻始终坚持以技术创新为起点，通过不断提升产品品质为客户创造更多价值，截至2023年底公司已获得20余项专利授权，并逐年加大研发投入。
自公司成立以来，贵州中钻一直聚焦于中高端国际市场的开拓，截至2023年年底产品已出口至全球110个国家和地区，2023年年出口额位居中国第一（根据欧睿国际2024年4月中国凿岩钻具调查报告披露），同时公司注册商标Sinodrills作为中国凿岩钻具领先品牌已经在全球120个国家或地区注册。

我们的使命是：让中国凿岩钻具走向世界，让世界信赖中国品质；
我们的愿景是：让中钻凿岩钻具畅销世界，年销售超1亿美金；
我们的价值观是：让客户满意并复购，是我们工作的唯一标准。

展会详情如下：

展会名称：上海BAUMA China 2023

展位号：E5.368

展览时间：2024年11月26日 - 29日

展览地点：上海新国际博览中心

        展览期间，我司专业的业务员将全天候的为您提供专业接待服务，期待与您进行面对面的深入交流，共同探讨合作的可能性。我们珍惜每一次与您的相见，因为每一次的交流与合作都是加深我们彼此理解与信任的重要契机。我们渴望倾听您的声音，了解您的需求，共同开启新的合作篇章。

        我们期待您的莅临，一同见证工程机械行业的辉煌时刻。在E5.368展位，让我们携手并进，共创美好未来！

1. 铜焊：

2. 冷压与热压

1. 钻头胎体材料；

2. 胎体的热处理工艺；

3. 硬质合金齿的直径；

4. 将硬质合金齿压入钻头胎体的设备。

There are three methods for inserting carbide buttons: copper brazing, cold press, and hot press.

1.Copper Brazing:

Copper brazing is the earliest way of inserting carbide buttons, primarily determining the size of the hole and the carbide button based on the gap during brazing. According to the bit skirt structure, corresponding button holes are drilled into the bit skirt, and then the carbide buttons are welded into the bit skirt using copper or silver welding techniques. 

This method does not require high precision for the drilling or button size. During brazing, the brazing material is placed at the bottom of the carbide button, with some flux sprinkled on the carbide button surface. The brazing material diffuses fully in an oxygen-free condition, forming a dense, uniform, and full weld. The hole only bears the radial and tangential stresses caused by the condensation shrinkage of the weld, with no axial tensile or compressive stress. Additionally, this layer of brazing material can delay the impact during rock drilling, thus avoiding the disadvantages of interference fit. 

However, the high temperatures during welding impose thermal stresses, potentially causing defects and micro-crack propagation in the low cobalt alloy, as well as reduced hardness  (by HRC  0.5-0.8 ) and bending strength (by 8%-20%) of the carbide. The formation of an oxide layer on the surface of the alloy button makes the carbide button prone to fracture. 

Currently, this method is mainly used for single used button bits, such as blast furnace tapping bits and anchor bits.

2.  Cold Press V.S Hot Press

Cold press and hot press both utilize interference fit to fix the carbide buttons, and the interference is generally between 0.04mm and 0.08mm. Factors influencing the interference include, but are not limited to: 

1. Drill bit skirt material; 

2. Heat treatment process of the skirt; 

3. Diameter of the carbide buttons; 

4. The equipment for inserting carbide buttons into the bit skirt. 

Cold press is done at room temperature, without the need to heat the button bit, directly using a hydraulic hammer to press the carbide buttons firmly into the button bit. 

This process has a lower production cost but lacks stability.

Improper selection of interference can significantly increase the pressing force, sometimes causing the carbide and the hole to be damaged. Even with appropriate interference, the tangential, axial, and radial stresses experienced by the carbide button under heavy loads can accelerate the expansion of existing defects, leading to premature damage to the carbide buttons. 

The overall lifespan of cold pressed button bits is limited, particularly in the late drilling stage of button bits, and issues such as buttons popping out or breakage are common. 

Cold pressed button bit is generally used for softer, less abrasive rock formation, and higher-end anchor bits often utilize this method.

Unlike cold press, the hot press process takes advantage of the principle of thermal expansion and contraction. It involves heating the bit skirt to a certain temperature, typically between 200°C and 500°C, to expand the diameter of the button holes. Then, the carbide button is inserted into the hole and physically contracted to tightly integrate the buttons with the bit skirt. 

This method does not necessitate pressure, or only minimal pressure, thereby avoiding or reducing the impact on the performance of the carbide buttons, making it more effective in maintaining the original properties of the carbide buttons.

Hot press is currently the best and mainstream method for inserting carbide buttons. Hot pressed button bits have better wear resistance, higher hardness, and superior stability, suitable for very hard and highly abrasive rock formation.

As the leading exporter of rock drilling tools in China, Sinodrills’ threaded button bits and down-the-hole button bits are all hot pressed, offering long service life, greater wear resistance, and excellent stability!

        贵州中钻凭借多年来在凿岩钻具行业的品牌实力、完善的产品展示、精美的展台设计，以及专业的参展团队吸引了众多参观者的目光。然而，我司本次展会的亮点在于我们自主设计研发并生产的锥度钻头。这款创新产品成为了无数专业观众关注和咨询的焦点。

        展会期间，我们与众多来访者进行了深入的交流和磋商，探讨了客户的需求和挑战。这些有价值的交流为我们与潜在客户建立了新的合作机会。与此同时，我们也重逢了许多久违的老朋友，他们的长期以来的信任和支持也让我们的展会更加充实。

        贵州中钻致力于成为中国凿岩钻具出口第一品牌，为全球客户提供高质量的凿岩钻探产品和卓越的服务，降低客户每米的钻探成本，携手客户一同迈向成功之路。期待着与您在未来的展会中再次相聚，共同探讨业务合作的可能性，与每一位客户一同迈向成功之路。

        作为中国钻具行业的主要厂商之一，贵州中钻本次也将出席本届展会，欢迎各位莅临我司位于E5.136号展位。

2019年9月20日，为期一周的 第34届Perumin在一道美丽的夜色里落下帷幕。作为拉丁美洲最具影响力的矿业博览会之一，本次展会对我司而言，即是新品的展示平台，更是展现公司实力和扩大我司拉美市场占有率的机会。

        贵州中钻立足深耕拉美凿岩钻具市场多年，享有颇高的市场口碑。得益于此，在整个展览会期间，我司展位人流如梭。除了与众多合作多年的老客户见面交流，巩固现有合作关系之外，也发掘了大批潜在客户。

        通过Perumin，我们了解拉美凿岩钻具市场未来的发展方向，为公司今后的发展带来新的契机。我们将一如既往地秉承专业化、品质化和创新化的精神服务于我们的全体客户,以质量和服务立足于市场。

        秘鲁国际矿业展览会（Perumin-34 Mining Convention）是拉丁美洲采矿业最重要的多学科专业会议和技术展览会，在国际上也具有很广泛的影响力。本届展会将于9月16日至20日在秘鲁阿雷基帕召开。展会同期还将举办矿业技术展览会会议-EXTEMIN，届时将由知名人士讨论和分析矿业发展前景和商机。

        贵州中钻作为国内领先的凿岩钻具供应商之一，我们将携最新产品参与本次展会。在此我们诚挚的邀请您及贵司代表莅临我司位于C展示馆的788,789号展位，我们由衷的期待与您在我司展位相遇。

        欧洲作为我司的核心市场之一，在这一区域我们长期保持稳定的市场并逐年增长，加之BAUMA的影响力，我们与来自全球40多个国家的合作伙伴进行了会面。同时，我们也与若干潜在客户进行了富有成效的沟通，得意于我司过去所取得的若干成功案例以及优秀的市场口碑，许多潜在客户都对我们的产品深感兴趣，更有客户在现场与我司签订采购合同。

        2019 BAUMA充分体现了全球工程机械市场的复苏，其中也包括对我们钻具的需求。同时我们也深刻地感受到品质和服务是未来的核心竞争力，因此我们将继续聚焦品质，创新和服务，为我们所有客户提供更好更稳定的产品和更优质的服务。

        2022年，让我们再次相聚在BAUMA。

        BAUMA是创新背后的全球推动力量，是成功和市场的引擎。 它是世界上唯一一个将建筑机械行业整体和深度融为一体的贸易展览会。 该平台提供最高集中度的创新 - 是您值得访问值得纪念的展会活动。

        作为中国钻具行业优秀的厂商之一，贵州中钻本次也将携带我司产品出席本届展会，我司展位号为C2.513，欢迎各位莅临我司展位。

        本次展会期间，我们除了与合作多年的老客户们见面交流；同时也接待了大量的潜在客户，在其与我们的专业销售顾问深入交谈后，许多潜在客户对我们公司予以了解和认可，并且对我司产品，尤其是自钻式锚固钻具产品表现出强烈的兴趣和合作意愿。

        欧洲作为我司主要的核心市场之一，长期以来我们一直在此区域保持着稳定的市场占有率，加之INTERMAT展览会的影响力，让我们很荣幸与许多来自法国及其他欧洲国家的合作伙伴得以见面交流。此外，对众多的潜在客户我们也进行了详细且专业的接待，这些潜在客户不仅表达了他们愿与我司合作的意向，更有客户在现场便签订订单。

        智利国际矿业展览会（EXPOMIN）是拉美第一、世界第二大专业矿业展览会。本届展会将与4月23日至27日在智利圣地亚哥召开。此次展会将展出当今矿产行业尖端的设备和技术，智利政府和矿业部门还在展会同期举办研讨会，就矿产业的发展和技术革新形势进行分析，应对未来业内的机遇和挑战，是企业进行设备采购和技术交流的最佳平台。

        贵州中钻作为国内专业的凿岩钻具企业之一，我们将携带最新产品参与本次展会。在此我们诚邀您及贵司代表莅临我司位于1号馆的1-F66号展位。

        法国国际工程机械与建材机械博览会（Intermat）是世界三大国际工程机械展览会之一。该展会作为全球第二、法国第一的的展览会，每三年定期在法国巴黎举办，是建筑、矿业和材料行业的全球会议场所。本届展会将于4月23日至28日在法国巴黎召开。

        欧洲市场作为贵州中钻的主要市场之一，本次我们将携带我司最优品质产品出席本次展会，在此我们诚挚的邀请您和您的公司代表莅临我司位于5A馆的D058号展位，我们由衷的期待与您相遇。

         此次我司展位成为中国区的焦点，前来参观的客户络绎不绝。我们非常荣幸地见到了一些与我们合作多年的老客户，同时与众多新的潜在客户进行了深入的交流，特别是针对本公司的自钻式锚固类钻具和潜孔类钻具，大家表现出了非常浓厚的合作兴趣。

        MINExpo作为全球采矿界规模最大的地表和地下采矿及设备展览会，每隔四年在美国拉斯维加斯国际会展中心举行。每届展览会都会吸引世界知名矿业设备生产企业及露天采矿业、地下采矿业、矿场开发业等相关行业的决策者齐聚于此。

        本届MINExpo将在9月26日至28日召开，展会展出面积扩大至76000平方米，并吸引来自全世界的1800余家参展商参展。

        贵州中钻作为中国凿岩钻具行业的专业化企业之一，也将出席本次展会，欢迎各位莅临我司位于南馆28301号展位。

        在本次BAUMA展上我们不仅与60多位已成交客户会面和交流，同时也接待了一百多位新的潜在客户，在通过我司销售顾问详细而专业的介绍之后，许多客户都表现出了强烈的兴趣以及合作意愿，其中还有部分客户当即便签订了订单。

        2016 BAUMA已经结束，我们期待2019年再次相聚德国。

        BAUMA展是推动创新的全球动力，是成功和市场的引擎。它是世界上唯一一个将工程机械的整个广度和深度融合在一起的行业。这个平台是创新的最高集中地——让你的访问成为一个值得记住的事件。

        2016年4月11-17日，第31届BAUMA展将在慕尼黑举行。2013年的展览再一次创造了几项新的记录，再次确认了它作为世界上最大的商品交易会的领导地位。

        在此我们诚邀您拜访BAUMA展同时拜访我司展位C2.505

         这是我们第一次参加INTERMAT，但由于欧洲一直是我司的主要市场，加之巴黎得天独厚的地理优势，在整个展览期间我们与来自周边15个国家的30多名长期合作的客户或代理进行了会面和讨论，这让我们深感荣幸，不仅让我们更真切地了解到客户的需求，也为我们接下来提供更好的产品和服务奠定了坚实的基础。

        尽管全球钻具市场依处于低迷阶段，但我们凭借优质的产品，更有竞争力的价格和更好的服务，使得中钻产品在欧洲市场仍占据稳定的市场份额。而通过INTERMAT这样一个平台，让我们得以向更多潜在客户展示我们的产品，展示我们的专业以及展示我们的服务，因此我们期待2018与您再次相聚美丽的巴黎。

        INTERMAT是由S.E国际主办的汇集制造商和进口商的贸易展会，CISMA(设备制造商协会建设、基础设施建设、钢铁和处理设备行业), SEIMAT(国际土木工程协会、采矿、建筑和起重设备行业)和Comexposium,欧洲领先的活动组织者之一。

        INTERMAT在巴黎每三年举办一次，是建筑、矿业和材料行业的全球会议场所。它是设备、组件、工具和服务的最新创新的舞台。

        我们将于2015年4月20-25日在INTERMAT展展示我司最新产品和最新产品目录。我们的展位是B002，5B馆。我们期待着在那里与您相见。

        尽管市场低迷，行业面临严峻挑战，但在BAUMA China 24平方米的展会上，该地区仍吸引了来自23个国家和地区的300多名客户。

贵州中钻在2014年在BAUMA的新记录:

39位老客户专程拜访我司展位

我司展位共计吸引200多位潜在客户

在展会现场签订超过百万美金订单

        在本次BAUMA展，我们做了一个非常好的和富有成果的展示，在四天的展览中，超过30个老客户拜访我们，我们的展位吸引了200多位潜在客户。更重要的是，已经完成了超过100万美元的订单。

        2014年11月25日至28日，将在上海上海新国际博览中心(SNIEC)举行的国际建筑机械、建筑材料机械、建筑车辆及设备贸易洽谈会。

        上届展会打破了所有的记录:来自38个国家的2718个参展商，来自141个国家的177080名参观者，以及30万平方米的展览空间，bauma中国提供了令人印象深刻的证明，证明它是亚洲最大和最重要的行业盛会。我们诚挚地邀请您和您的公司代表参观我们在中国上海BAUMA的展位，我司展位号为W2-474。

        我司在本届EXPOMIN获得了巨大的收获，因为该展会为我们开发智利和拉丁美洲市场发挥了重要作用。在为期五天的展览中，特别设计的展台搭建和专业的中钻人，为我们的展台吸引了成千上万的参观者。300多名专业观展者与我们进行了深入的交流。其中一些是来自不同国家的客户，但更多的是我们的新潜在合作伙伴，包括钻探承包商、分销商、矿主、钻工和大学教授。更重要的是，有超过20人表达了与我们公司合作的意向，甚至有7人在他们参观了我们的展位后立即与我们签订了试销订单。

        基于过去十年来我们的良好声誉，作为中国领先的凿岩钻具制造商和出口商之一，我们也有幸被一家地方电视台邀请采访。在采访过程中，我司工作人员介绍了我们在智利和拉丁美洲的公司业务，也表达了对扩大智利和拉丁美洲市场的信心。

        EXPOMIN被认为是世界上最重要的矿业展览之一，是拉丁美洲矿业的重要产业。2014年“EXPOMIN”的组织者预计将有来自30多个国家的8万名参观者和1400名参展商。这为与智利和拉丁美洲地区的矿业高管、专业分销商和潜在商业伙伴和客户会面创造了一个强大的机会。

        此次展览将于4月21日至25日举行。我们将带我们最新的产品目录和产品参加这次交易会。我们将展示我司钻头、钻杆、钎尾等相关产品。

        我们诚挚地邀请您和您的公司代表参观我们在智利圣地亚哥的展台，我司的展位号为1B馆114号。

        本次股权激励项目，贵州中钻推出科学全面的“1-3-2”虚拟股转注册股方案。该方案赋予激励对象首年即享在职分红，即时回馈。随后三年内，滚动考核合格者将跃升为工商注册股东，股权依据岗位贡献分配，共享企业成长硕果。注册完成后的股份将有两年锁定期，以护航公司及人才团队稳健前行。锁定期满后，股权交易将不受限制。该方案不仅为人才构建了明确清晰的职业发展路径，同时优化了公司股权结构，稳固了人才队伍。

       此举彰显了贵州中钻对人才价值的深刻认识与高度重视，是其人才战略全面升级的具体实践。展望未来，贵州中钻将继续坚持“以人为本”，持续优化激励政策，为每一位有志之士提供实现更高价值的舞台，携手共同创一个更加灿烂辉煌的明天，为行业发展贡献力量。

        我们的 “SINODRILLS”商标在经过近一年的筹备、审核和公示后，近日在英国正式注册成功。这一重要里程碑标志着贵州中钻打造全球知名品牌战略取得了显著进展，对提升公司海外业务，推动公司品牌国际化，具有重要意义。

       在全球化发展的今天，知识产权已成为企业核心竞争力的重要组成部分。我们一直以来都非常重视品牌知识产权保护，20余年的发展中，我们不断提高公司竞争力和品牌形象。随着海外市场占有率逐年递增，“SINODRILLS”品牌也成为越来越多海外客户的首选。

        今后，我们将继续挖掘品牌潜力，持续自主创新，努力为客户提供更好的产品和服务，以产品品质推动品牌价值提升

        在打造这一现代化办公环境的过程中，我们重视每一个细节：从空间布局到色彩配置，均经过仔细设计与考量，以创造一个既能激发创意、提升效率，又能使客户宾至如归的工作氛围。新办公空间实现了诸多创新和优化，更好地满足了不断变化的业务需求，增设了多功能区域，如开放式办公区、先进的多媒体会议室、与世界接轨的国际视频会议室、引人入胜的产品展示厅及多功能休闲区，每个区域都旨在提供极致的工作与体验环境。

        通过这一系列升级，我们旨在提高工作环境的舒适度和功能性，以更好地支持我们的业务发展和提供卓越的客户服务。我们坚信，只有在一个舒适和充满激励的办公环境中，员工的潜能才能被充分激发，从而提供更专业、更高效的服务。

        在此，我们也诚挚邀请您访问我们的新办公空间，您的到访将极大地鼓舞我们的团队，并推动我们继续前进。同时，感谢您一直以来的信任与支持，我们期待在全新的环境中，与您共同创造更辉煌的未来。

        在国际妇女节来临之际，贵州中钻向所有女性员工及全体员工的女性家属致以诚挚的祝福和感激。尽管公司办公室正处于装修之中，全体员工临时在租赁的办公室工作，我们依然坚持将员工置于重要位置，为全体员工提供更好的工作环境并和福利。

        贵州中钻为所有女性员工和全体员工的女性家属准备了精心挑选的礼物，希望无论是在办公室还是在家庭中，大家都能享受到快乐和幸福，感受到我们的支持和关爱。

        我们特别感谢所有女性员工，你们展现的专业素养、勇气和毅力让我们无比自豪。同时，我们也感谢各位女性家属，是你们默默的支持，才使我们能够更加专注于工作。

        最后，再次祝愿所有女性员工和女性家属节日快乐！

        总结会上，公司总经理对公司全年经营情况做了全面总结，肯定了各部门的工作成绩，对全体员工的辛勤付出表示了衷心的感谢。2022年中钻人直面挑战，在逆境中迎难而上，公司取得辉煌的销售业绩，并创下公司历史新高；同时，公司运营管理方面，也取得了质的飞越。展望未来，全体中钻入将继续团结奋进，共同续写贵州中钻的新篇章。会后晚宴，全体中钻人齐聚一堂，举杯敬更美好的未来！

        百舸争流，奋楫者先。贵州中钻持续以创造价值为使命，以高质量发展为主题，与全体客户精诚合作，向2023年新的目标稳步迈进！

        会议由总经理对公司全年工作进行总结并制定新一年的发展方向。回顾过去的一年，贵州中钻在逆境中创造了非凡的业绩。不仅销售业绩再创新高，运营管理效率也同样取得了持续提升。展望未来，我们仍将不忘初心，砥砺前行。会上，总经理也对2021年度公司评选的优秀个人进行表彰和奖励，并号召全体员工学习先进，为公司发展再立新功。会后晚宴，全体员工在一片欢声笑语中共同举杯向未来！

        2022是贵州中钻成立的第二十年，二十载中钻人的奋斗，奠定了中钻今日的成果。二十载客户的支持，造就了中钻今日傲人的成绩。展望未来，我们信心满满，我们将继续努力，不断提高我们的品质和服务，为更多客户提供更优更经济更高效的凿岩钻具解决方案。

        全新的多功能展厅总面积近150平方米，共涵盖企业简介区、产品展示区、业务洽谈区和视频会议区。通过视频、图片、实物、交互式触屏等多种展陈形式，可以全方位地展示企业形象和公司产品。

        其中，视频会议采用最新高清视频会议终端，除了保证与全球各地客户流畅的进行“一对一，多对多”的视频会议功能之外，还可在视频会议的过程中实现屏幕、文件共享等功能，大幅提高了视频会议的效率。结合我司完整的样品储备，可以让全球客户在足不出户的情况下与我们达成随时高效沟通，以此为客户提供更好的售前，售中和售后服务。

        公司新展厅的启用，不仅为公司提供了一个集中展现企业形象的平台，同时也为我们能与客户更好的开展沟通和服务工作奠定了基础。我司也将以此为基础，为更多海内外客户提供更好的产品和服务。

        日前,中国河南郑州市遭遇罕见持续降水天气从而引发洪涝灾害，对当地人民群众的生命财产安全造成重大损失。

        我司听闻灾汛，第一时间与当地红十字会取得联系并捐赠人民币三万元整。一点一滴汇成大海，一分一角凝聚希望，我司谨以绵薄之力支持抗灾工作。众志成城度难关,风雨同舟抗灾情。我们衷心希望灾情早日得以消除，灾区人民早日恢复生产生活。

        无论是在家庭生活中，还是在职场工作里，女同胞都是不可或缺的力量。在家庭中，她们给予最强有力而温馨的付出；在职场里，她们给予最细致而高效的奉献。每一位母亲都是人类社会进步的最伟大者，每一个女同胞都是我们事业进步的催化剂。女性的社会角色多种多样且不可或缺。正如初春送暖繁花盛开，女性也在各自领域绽放自身的独特魅力。在此，我们感谢每位女同胞的贡献与付出，祝愿所有女同胞节日快乐！

        我们将在今后的工作中一如既往地优化和提升质量管理和客户服务能力，为全体客户提供更好的产品和服务。

        截止2020年6月底，我司已经为海外40多个国家和地区的客户寄送6万只以上的口罩.相知无远近，万里尚为邻。贵州中钻一直与全体合作伙伴们保持紧密联系，守望相助，并已建立起超越生意本身的情感和友谊，我们愿为全体合作伙伴提供力所能及的帮助，共抗疫情！

        浓情的粽子，蕴含着“爱”的文化和暖暖的节日祝福。一份看似简单的端午礼物，更多地表达了公司对全体员工以及其家属的祝福和愿望.祝福中钻全体人员端午安康，阖家幸福。

        贵州中钻将继续秉持“共同创造，共同分享”的经营理念，为创造健康和谐的中钻大家庭而持续努力.

        同心协力，守护平安！我们坚信在党和国家的坚强领导下，通过我们社会各界的努力，一定能够打赢这场疫情防控阻击战。

        被评选为重点联系企业，不仅是政府主管部门对我司多年经营成果的认可，也是我司逐步壮大的体现。作为重点联系企业之一,各级政府部门将在项目支持，出口退税,通关便利,收结汇,融资等环节给予我司优先保证.我司将以此为契机，继续坚持以质量和服务求生存，以信誉求发展,不断加强质量管理,强化服务意识,为更多海内外客户提供更好的产品和服务。

        我司将在今后的工作中一如既往地严格执行质量管理体系要求及产品品质控制，不断提高我司的管理水平，持续提升我司的产品质量，为客户提供更优质的产品和服务。

此次新工装使用鲜艳的红色，象征着全体中钻成员积极向上的工作态度，和顽强奋勇的拼搏精神；同样也时刻警醒着全体中钻人，随时保持严格的工作状态，为公司专业化发展的新征程彰显新作为。

        每年的八九月份都是我们众多客户的暑假,也是我们中钻一年一度的旅行季节.2019年8月17日我司组织了为期四天的泸沽湖环游之行,以感谢全体员工在刚刚过去的大半年日子里的努力工作和辛勤付出,同时也让每位员工共同分享收获的喜悦.

        泸沽湖犹如一块明珠镶嵌在群山怀抱之中，每逢晴天，蓝天白云，倒映湖中，水天一色，景象奇丽。这里优美的自然风光和奇特的民族风情，被探险家约瑟夫洛克称为“神仙居住的地方”

        在四天三夜的日子里，大家纵情山水间，不仅感受了美不胜收的自然风光，享受了旅游的喜悦与轻松，同时也增强大家彼此间的认识,理解和友谊。相信这次短暂的休整，必将鼓舞我们以更积极和饱满状态投入到下半年的工作中，不断突破并创造更高的业绩。

全新一代的“GSE整体渗碳锥度钻杆”在原有的基础上，大幅增强了杆体的表面硬度，提高了产品的耐磨性。这意味着杆体不仅能承受更苛刻的钻探要求，同时也降低了您的钻探成本。凭借着卓越的品质和超长的使用寿命，“GSE整体渗碳锥度钎杆”将为您的钻探工作提供更高的性能和生产力。

GSE整体渗碳锥度钻杆的优势：

•  使用寿命的延长提高了整体工作效率

•  耐磨性的提升降低了整体钻探成本

•  规格的多样化增强了产品匹配性

       贵州中钻一直致力于打造一个让员工有自豪感、幸福感和归属感的企业。每逢佳节来临之际，我们都会为全体员工献上一份心意。值此端午节之际，我们将节日的慰问送到每一位员工手里。一片片粽叶，裹着香香的糯米，不仅让大家感受到了节日的气氛，也传递着公司对每一位员工的肯定和浓浓的情意。

       贵州中钻将继续秉持“共同创造，共同分享”的经营理念，创造健康和谐的中钻大家庭。

        一直以来，贵州中钻坚持以人为本的经营理念，切实关爱每一位中钻人的身体健康。作为公司的福利体系内容的一部分，近日特组织我司全体员工在专业机构进行年度健康体检。

        本次体检除了安排基本健康体检、血液检查、职业病检查等常规项目外，还结合公司今年实际情况，特别为员工安排了数项个性化的体检项目。一年一度的体检旨在让每一个中钻人能够及时了解自己的身体状况，增强健康意识，也让全体中钻人共同分享公司所取得的成绩。

        贵州中钻将继续把对员工的关怀落到实处，秉持“共同创造，共同分享”的经营理念，创造健康和谐的中钻大家庭。

        为庆祝我司在2018年上半年创下历史最好半年业绩，2018年8月4日至6日，贵州中钻全体人员举办了为期三天的暑期旅行, 这也是公司企业文化非常重要的一部分。

        此次旅游目的地为美丽的旅游圣地云南大理。“上关花,下关风,苍山雪,洱海月,”总体概括了大理最具代表性的四大景观。在大理，苍山洱海珠联璧合，湖光山色相互辉映，得益于如此独特的美丽环境，因此也被誉为“东方日内瓦”。

        游洱海，赏苍山，白天看风景，夜晚品美食。为期三天的大理之旅，不仅缓解了大家平时的工作压力和紧张情绪，而且增强了团队的凝聚力。更重要的是，这将鼓舞全体中钻人在接下来的半年里投入更饱满的工作热情，以期创造新的辉煌。

        自公司成立以来，我们便深知诚信是立企的根本。本次再获这一荣誉，是政府主管部门对我司坚持诚信经营的充分认可。它不仅展示了我司的企业形象，同时也不断提醒我们，要以高度的责任心为客户提供更优质的产品以及服务。

        获得该认证，是中国海关对我司规范化管理和诚信经营的充分认可，也意味着我司产品在出口业务中将享有更便捷的通关流程。我们将以此为契机，继续强化管理，为所有客户提供更高效和更专业的服务。

        此次定制的新工装注重实用与美观，让员工在举手投足间尽显职业风采。统一着装，充分展现了员工意气风发的精神面貌，增加了团队的向心力与凝聚力；同时也提升了企业的对外形象，展示出企业的标准与规范，传递着企业品牌形象。

        公司旅游活动一直是中钻企业文化的一部分，这不仅能增强员工的归属感，也体现出公司的人文气息，并成为放松员工身心，提高公司向心力的重要活动之一。加之公司销售团队上半年达成了公司历史上较高的半年销售业绩，故于7月7日--11日进行为期五天的“天堂九寨”之旅。

        九寨沟作为世界自然遗产，是中国第一个以保护自然风景为主要目的的自然保护区。九寨沟以高山湖泊群、瀑布、彩林、雪峰、蓝冰和藏族风情并称“九寨沟六绝”，被世人誉为“童话世界”，号称“水景之王”。

        沿途的美景让大家心旷神怡，同时也增进了彼此间的交流。在五天的旅途中，展现了中钻人和谐相处、其乐融融、生机无限的团队精神，也增加了中钻的凝聚力，并为我们下半年的工作注入了更多的能量。

        近日，我司收到国家知识产权局颁发的6项国家实用新型专利证书，彰显了我司的研发实力以及在技术创新上的不断突破。

        近年来，我司不断健全科技创新机制，注重技术创新。在公司的大力支持下，我司技术研发部门立足本岗，创新思路，不断提升自主创新能力，推动我司产品技术创新。一项项技术成果的研发与运用，增强了我们的产品质量，为客户节省了成本，提高了施工质量。

        未来公司将进一步完善知识产权保护体系，持续创新，发挥自主知识产权优势，不断提升我司产品竞争力。

        在过去的十余年间，公司在凿岩钻具领域一直处于一个稳固上升的发展阶段。今年起我们针对我司产品进行统一规范，现为了提高用户体验及品牌产品识别度，我司特对顶锤式钻具、潜孔钻具、自钻式锚固钻具配件颜色进行统一，产品颜色将以公司logo中黄色为主。

        黄色充满活力和希望，正如中钻一样，是一个年轻的、朝气蓬勃的企业；同时黄色也代表着财富，希望我们所有客户都能与中钻共同创造财富；其次黄色也是给人以警醒，这将时刻提醒着全体中钻人，随时保持严格的工作状态对待产品质量及客户。

        近日，我司被贵州省工商局授予省级“守合同重信用企业”荣誉称号，这是公司多次被评为市级“守合同重信用企业”后获得的又一殊荣。

        一直以来，中钻始终恪守诚信服务理念，坚持以诚为本，以信立誉的原则，认真履行合同，诚实对待客户。这一荣誉是对公司诚信经营、守法履约的充分肯定和高度认可，充分展示了我司作为一流企业的形象，为公司提供了良好的信誉保障。同时也时刻警醒我们，要一如既往地继续坚持诚信经营，为客户提供值得信赖的产品和服务。

        今年2月，经过邓白氏为期半个月的严格审核后，贵州中钻企业评级由2A2级升至3AA2级，这标志着公司的实力和信誉又迈上了一个新的台阶。

        3AA2级企业评级，是企业履约能力、综合信用、企业实力与竞争力的体现。获得3AA2评级，对我司全体员工而言既是荣誉，更是鞭策。今后，我们将继续以良好的企业信誉、优质的产品与服务，同我们的合作伙伴及全体客户在凿岩钻具领域一同发展壮大。

        2016年1月，经国家工商行政管理局核准，贵州中钻机械设备有限公司成功将注册资本由原来的300万元增加至1000万元。增资是企业资金实力及运营能力的直接体现。注册资本的增加，意味着中钻的整体实力、竞争力、影响力均在提升。

        此次增资成功，公司的资金结构、抗风险能力都得到进一步的优化增强。同时注册资本的增加，也为公司后期发展提供了厚实的物质保障，进一步稳固了中钻在凿岩钻具生产销售领域的综合实力。

        自公司成立以来，人性化管理，将员工关怀落到实处始终作为企业文化之一。每年组织的旅游活动不仅体现了对员工的关怀，更重要的是凝结了全体员工；创造了活跃、奋进的氛围。加之公司销售团队今年上半年度所获的喜人销售业绩，故于2015年8月13日至15日进行了为期三天的“赤水休闲洗肺”之旅。

        赤水市位于贵州省最西北部，全市森林覆盖率80.3%，是国务院唯一以行政区名称命名的国家级风景名胜区，素有“千瀑之市”、“竹子之乡”、“桫椤王国”的美誉，更因中国工农红军“四渡赤水”以及赤水丹霞世界自然遗产而扬名中外。

        在三天的旅行中，大家的心灵在大自然中得到放松，同事之间互相帮助、互相照顾，在愉悦身心的同时，更加促进了同事之间的和谐相处，团结合作。短暂的放松不仅增加了整个中钻团队的凝聚力，同时也为中钻下半年的工作注入了更多的能量。

        旅游归来，大家都以更饱满的热情、更充沛的精力投入到岗位工作中。我们相信全体中钻团人将在未来的日子中，持续不断的为你们提供越来越好的产品和服务

        经过两年多的修改和反复试验，我们现在成功地开发出一种新的锥度钻头。我们的新锥度柱齿钻头具有全新的加工技术，独特库体钢材和高品质的合金。

        在过去的两年中，我们在在超过10个国家的不同地质条件下进行测试，我们的新锥度柱齿钻头在性能和平均使用寿命上都可以与国际领先的品牌相媲美，如山特维克或阿特拉斯•科普柯，但是在价格方面要低30%，甚至50%。

        为了以更专业的方式向我们的客户展示我们的产品，在2014年底之前，贵州中钻已经全面升级了所有现有产品目录。新版本的样本册将为您更专业的描述和介绍我们的产品。简洁的页面编辑风格，使我们的客户能更简单的找到自己所需要的产品。从设计到排版，所有的一切都是根据我们公司VI组成，实现了高度的统一。无论它们的外观或内部页面都可以更简单的方式呈现给我们的客户。

        目前更新的目录包括中钻总目录、自转式锚固钻具目录、潜孔钻头目录、潜孔钻杆目录、跟管钻具系统目录和潜孔冲击器目录。接下来，我们将更新我们的其他产品目录，包括顶锤式钻具目录，刮刀钻头目录和金刚石绳索取芯钻具目录。

        员工始终被视为中钻公司宝贵的财富及核心竞争力之一。一直以来我们除了不断完善我们的产品及服务。同时，我们也从未间断对全体中钻人提供各种培训，确保全体中钻人能够更好的服务于其所在的岗位。

        作为培训项目之一，本月起公司组织业务一部、业务二部和市场部三个部门开展“BEC”英语培训。借此提高业务工作从事人员的口语表达能力、听力及书写能力，从而在工作过程中更高效准确的服务于我们的每一位客户。

        我们相信，通过持续不断地改进和提升，贵州中钻定能为所有尊敬的客户提供越来越好的服务。

        贵州中钻机械设备有限公司是一家专业从事凿岩钻具研究、生产和销售的外向型公司，公司自营两个生产基地，同时还与国内其他生产企业合作，旨在为客户提供全套钻探解决方案并不断降低每米钻探成本。由于稳定的产品质量、合理的产品价格以及专业的销售服务，中钻制造已经出口到全球82个国家和地区，并得到越来越多的钻探商，承包商和经销商的选择和认可。

        历经十二年风雨历程，贵州中钻机械设备有限公司现已不断发展壮大，为适应公司发展，现推出全新的公司标识，如下图所示。

        公司新标识以蓝黄两色组合而成，蓝色代表积极旺盛的生命力，代表着贵州中钻机械设备有限公司及全体成员积极向上的工作态度，和顽强奋勇的拼搏精神；黄色代表我司所在凿岩钻探行业，并将在此行业中持续为客户提供最优品质的产品和服务。新商标中以未封口的圆形表示我们将追求更好，对任何事情都将永远保持着精益求精；突出的黄色三角形则为我们指明了前进方向。我们将持续提供高品质的产品和服务为原则，并不断完善，争取成为中国顶尖凿岩钻具行业供应商。

        特此通告我们所有尊敬的客户，并期待您的继续支持与合作。

.

        厦门鼓浪屿是厦门最大的一个卫星岛，岛上岩石峥嵘，挺拔雄秀，因长年受海浪扑打，形成许多幽谷和峭崖，沙滩、礁石、峭壁、岩峰，相映成趣。同时鼓浪屿也是"钢琴之岛"，漫步在岛上各条小道上，伴随着欧陆风格的建筑，不时会听到悦耳的钢琴声，为你的闲暇时光了更增添几分惬意。

        自中钻成立以来，“共享双赢”是公司一直秉承的理念，这不仅表现在中钻与每一位客户间的双赢，同时也体现在企业与员工间的成果共享。随着公司规模的不断扩大，员工福利待遇不断提高，公司组织全体员工或优秀员工外出旅游观光已成为公司的工作之一。分享公司不断发展的成果，进一步增强了员工的归属感，同时也增进了企业的凝聚力。中钻的企业文化在每一位员工身上得到体现和传承。势必也将通过每一位专业且热情的销售传递给每一位中钻的客户。

        在为期四天的旅行中，大家谈笑自若，抑制不住兴奋的心情，一处处景点让人仿佛置身于一幅幅美丽的画卷。四天的旅行短暂而充实，大家在身心得到充分放松的同时，也拉近了员工之间的感情，营造了团结向上的氛围，大大增强了中钻销售团队凝聚力和向心力。

        最后，感谢我们每一位尊敬的客户，因为你们的支持才让中钻不断突破并登上新的销售高峰，因为你们的信任让中钻得以不断的发展壮大。我们相信，我们的销售团队在通过这样的活动休整之后，定将在日后的工作中以更积极的工作态度和更饱满的工作热情为我们的每一位客户提供越来越好的产品和服务。

CE认证简述:

        CE标记表明产品符合欧盟立法,无论在世界制造,使其在欧洲市场的自由流动。通过在产品上粘贴CE标志，制造商声明，其唯一的责任是符合所有的法律要求，以实现CE标志，允许在整个欧洲经济区自由移动和销售该产品。

        在英国经过多次严格的测试后，2014年5月，贵州中钻自转式锚杆通过CE认证。CE证书涵盖了我司R25、R32、R38、R51、T76、T30、T40、T52、T73、T103、T111、T127和T130在内的所有自转式锚杆。

Date: In January, 2014.

DTH Drill Rig Model: DM45 HP & DML

DTH Hammer Model: SINODRILLS QL60 quick hammer

Rock Formation: Rock conditions vary widely, from mild rock (not very abrasive) to very hard and very abrasive.

DTH Button Bits Configurations: QL60 171mm, 10 gauge buttons x 18mm, 10 face buttons x 18mm, two flushing holes

                                                      New bits                                                                       After 18 times sharpening

Our three pieces of QL60 171mm button bits had been tested from the 7th to 20th of January, as below, it was the summary for the drilling test.

As below, it was our # 1 bit detailed drilling record from the site.

Remarks: Red box: with SINODRILLS brand QL60 quick hammer, 0.68 m/Min average speed;

Yellow box: with world famous brand A QL60 shank hammer, 0.55 m/Min average speed.

As below, it was the summary from the site manager about SINODRILLS DTH button bits:

SDA system may be used for different rock conditions, and drill bits are available in different designs and diameters. The thread types are compatible to international standards and can easily be adapted to standard rock drilling equipment. The SDA range is available in different load capacity classes, depending on the outer and inner diameter of the bar.

The self-drilling anchor bolt system makes your anchoring much easier, as it is capable of performing procedures of drilling, anchoring and injection all at once.

Self-drilling installation may be accomplished either manually or semi-automated, depending on the available drilling machinery.

Main Advantages of Self Drilling Anchor system

• Simultaneous drilling and installation

• Installation using standard drilling machinery

• Immediate load-bearing capacity after installation and activation of the expansion element

• Reduction of cycle time due to the de-coupling of the grouting procedure from installation

• Ability to maintain load-bearing capacity even when undergoing large deformations

• Tough system components

• Safe, easy, and reproducible installation procedure

• Improved drilling accuracy thanks to the directional guidance of the self-drilling expansion element

• Trouble-free application in unstable borehole conditions

• Easy extension using couplings

• Design and diameter of the expansion element can be adjusted to suit different and varying ground conditions

SINODRILLS Self Drilling Anchor System may be used as a fore-poling element for pre-support or as a lance for injection works.

Fields of Application

• Civil Engineering

• Underground Mining and Tunneling

Typically installed with rotary percussion drilling, using the simultaneous drill and grout technique where grout is pumped through the bore of the bar to the sacrificial drill bit as drilling is advanced with the grout flush comprising a part injection / part flush system. Permeation of grout beyond the nominal borehole diameter can occur in granular soils but be very limited or non-existent in cohesive soils. Air flush, with very careful flush control, has been used in cohesive soil;

May be constructed with cased or un-cased drilling systems to form the borehole into which the anchor components (either bar or strand) are inserted and grouted in place;

Have a defined free length which is isolated from the ground and is free to extend elastically when the anchor is stressed and then throughout its working life;

During the construction of underground works, it is very common to encounter soft rock, fractured zone and large deformation due to high ground stress. In the case of serious collapsing, extra-long anchor is needed instead of ordinary one.

Based on these reasons, IBO self-drilling anchor drilling tools are more and more widely used in underground, support, tunnel and other fields.

IBO Self-drilling anchor embodies drilling, grouting and anchoring as a whole. It widely used as an efficient anchoring means, in tunnel pre-support, slope, coast, mine, water conservancy projects, building foundation, roadbed reinforcement and geological diseases treatment such as landslip, crack, sink age. It’s irreplaceable in narrow construction environment.

The IBO self drilling anchor bolts are fully threaded, hollow core, cold rolled anchors with continuous outside thread suitable for attaching bits and couplings, which also forms a superb mortar connection. They are supplied with couplings, anchor plates and nuts, and anchor drill bit.

IBO Self Drilling Anchors are used for temporary and permanent stabilization; retaining walls in confined spaces; and slope stabilization for roads, railways, and tunnel portals. Whether used in cohesive or non-cohesive ground, the IBO self drilling anchor can be grouted and then stressed and locked off with nut and plate. Advantages are: similar installation for all ground conditions; no casing required; fast drilling and anchoring in a single operation; choice of bits and anchor loads; and hollow core for high-volume flushing and grouting.

Features of IBO self drilling anchor system:

1, High penetrability anchor drill bits, they are very easy to penetrate various rocks.

2,  Self-drilling anchor can be used at the place with narrow space. With continuous thread, achieving the aim of rock reinforcement with extra-long anchor

3, Unnecessary to be pulled out. Hollow steel can be used as grouting channel;

4, Embodies drilling, grouting and anchoring in one step.

The entire self drilling anchor system is mainly composed of the following important parts:

Self drilling anchor bolt/bar (SDA / IBO)

Self-drilling anchor bolt is a fully threaded hollow steel rod, it manufactured from high quality steel, with cold rolled to standard thread. The hollow core used for flushing, drilling and grouting.

The self drilling anchor bolt has more bending strength for reinforcing solid bars, soil nails, and rock anchors.

Self drilling anchor bit

The drill bit used to drilling, and help self drilling anchor bolt insert the hole at the same time. According to different geological conditions, it can be chosen with different shapes and materials.

Self drilling anchor coupler

The main purpose for coupler is to connect the self drilling anchor bolts. It used to extend the self-drilling hollow bars. Self-drilling anchor couplings are used to link anchor bars to make the anchor longer, thus promote its installation depth.

Self drilling anchor nut

Self-drilling Anchor nut is used to lock the anchor system. It manufactured from high precision steel with chamfered edges on both ends from high precision steel, and tempered to meet the stringent demands on anchor specifications and the daily operations of underground work.

Self drilling anchor plate

The plates feature a chamfered bore to ensure firm seating of the nut. The self-drilling anchor plate transmits load force from the self-drilling anchor system to the work face.

Other Accessories

Applications of Self-Drilling Anchors

Slope stabilization	Foundations with micropiles	Tunneling & Mining

The Self-drilling hollow anchor bolt is a fully threaded hollow bar which can be simultaneously drilled and grouted into loose or collapsing soils and brittle rock without the need for a casing.

The rock bolt is connected to the hydraulic rock drill by an adapter device and installed in the way a conventional borehole is drilled. There is a hollow interior of the self-drilling anchor bolt, a threaded exterior and a drill bit that is used for drilling. The self-drilling anchor bolt’s hollow interior enables air and water to freely more though the drilling process, flushing the particles. After completion of the drilling process, it also enables immediate injection. Continuous thread enhances pull-out resistance with grout. For fractured or hard rock formations as well as uneven ground conditions (such as gravel, soft, clay and non-homogeneous soil), self drilling anchor bolts present a specific bolting solution.

The self-drilling anchor bolt system makes your anchoring much easier, as it is capable of performing procedures of drilling, anchoring and injection all at once.

SDA system may be used for different rock conditions, and drill bits are available in different designs and diameters. The thread types are compatible to international standards and can easily be adapted to standard rock drilling equipment. The SDA range is available in different load capacity classes, depending on the outer and inner diameter of the bar.

Self-drilling hollow anchor bolt is mainly used in slope stabilization, tunneling pre-support, foundations with micro piles, it is also widely used in the railway system, metro project etc. It can be installed in sites with weak rocks, loose soil, and weathered layer, sand with stone layer and so difficult to create a hole in complex formations. The unconsolidated ground condition favor the self-drilling anchor bolt technique for fast and simple method of installation compared to the traditional method.

The hot-dipped galvanized coating is excellent for use in moist atmospheres where more rust resistance is required than the standard zinc plated wedge anchors can provide.  Ensure the service life of the anchor rod.

Hot-dip galvanized self-drilling anchor bolt

Galvanized self-drilling anchor system / full threaded steel self-drilling rock bolt / hollow anchor bar / anchor rods.

In order to reduce the corrosion rate and thus increasing the service life, SINODRILLS offer hot-dip galvanized systems. A complete hot-dip galvanized system is usually including hollow bar, coupler, nut and plate. All hot-dip galvanized items confirm to following standards:

SINODRILLS Galvanized Self drilling anchor bolt Parameters for T Thread

SINODRILLS Galvanized Self drilling anchor bolt Parameters for R Thread

Application of SDA (Self Drilling Anchoring system)

Self drilling anchor system can be used for underground applications and in civil engineering. In the field of underground applications, it can be used for bolting, piling, face stabilization, as fore poling element for pre-support, or as a lance for injection works.

The Self drilling anchor System also features a wide range of applications in civil engineering such as rock and soil nails, micro-piles, or ground anchors. The system is an “all in one” tool for drilling, flushing, post- or simultaneous grouting, and finally the load-carrying member itself.

Installations in weak ground and unstable borehole conditions represent no difficulty and are ideal for the application of the Self drilling anchor system.

Main Constitution of SDA (Self Drilling Anchor system)

01  Anchor Bit	02  Anchor Bar	03 Anchor Coupler	04 Anchor Plate	05 Anchor Nut

• Self drilling anchor bar (Hollow anchor bar)

Hollow anchor bar is the body of a self-drilling anchor, as a hollow steel tube with an outer round thread, hollow anchor has the sacrificial anchor bit connected at one side, plate and nut connected at the other; two hollow anchor bars could be connected together via a coupling, for duties that requiring longer anchors.

• Self drilling anchor bits

Anchor bit is the front part of the self-drilling anchor system, by cutting and drilling rocks and other geological structures, the anchor could be sent to the designed depth.

• Self drilling anchor coupler

Self drilling anchor couplings are used to link anchor bars to make the anchor longer, thus promote its installation depth. 

• Self drilling anchor plate

The self drilling anchor plate transmits load force from the self-drilling anchor system to the work face.

• Self drilling anchor nuts

Self drilling anchor nut locks the plate, transmits force from anchor bar to plate and finally to the working face.

Soil nailing is an efficient, effective and economical method of soil reinforcement. The reinforcement is installed into the slope face of in-situ ground, whether natural soil or an existing fill, stabilising such material. Soil nailing can be used to stabilise, existing structures such as unstable slopes, embankments and retaining walls. The use of soil nails can be adopted for the stabilisation of cuttings and coastal and quarried cliffs. The construction of new steep slopes for widening of infrastructure routes, new developments and new retaining walls, has seen an increase in the use of soil nailing. This method of soil reinforcement can be used for both permanent and temporary applications.

The self drilling anchor(SDA) system offers self-drilling soil nails where the central hollow threaded reinforcement bar acts as both final reinforcement in the completed anchor and as the drill rod during installation. The self drilling anchor(SDA) system is installed with sacrificial drill bits under a grout flush. In granular deposits in particular, the impregnation of grout into the surrounding ground significantly enhances the geotechnical capacity of the anchor. Large slabs of concrete and rock can also be readily drilled. These anchors work well as both tension and compression tiebacks and can be installed horizontally to meet any tieback or anchoring design criteria.

The application for self drilling anchor soil nailing include the stabilization of enbankments, dams, cuts, unstable slopes and tunnel entrances and the refurbishment of retaining walls.

Range of applications

Slope stabilisation	Anchoring sprayed concrete	Stabilizing existing retaining walls
Dams Cuts Embankments Erosion protection Protective nets Avalanche protection	Excavations Retaining walls Tunnel entrances Emergency stabilization measures	Retaining walls Stone walls Concrete walls Crib walls

SELF DRILLING HOLLOW ANCHOR BOLT

The hollow bar features a left hand or right hand with R thread (rope / round thread) or T thread (trapezoidal thread) for easy extension and connection to all conventional drill rigs. It is manufactured from high quality seamless steel tubes. The R thread and T thread all according to ISO standards or international standards, and both thread formed in a cold rolling process.

COUPLERS

The couplers are used to extend the hollow bars. The required length of the load-bearing element can thus be achieved also in cases of limited feed length of the drill rig or low headroom conditions.

All couplers are designed to safely transfer the specified system load, with the faces of the hollow bars bearing against each other to ensure safe energy transfer between the hollow bars and the drill bit without affecting the couplers mechanically.

PLATES

The steel plates feature a chamfered bore allowing an angle of deviation of 5 degrees in all directions.

NUTS

The nuts transfer the load from the plate into the hollow bar. They feature a spherical cap on at least one end to compensate for angle deviations. All nuts are so designed as to ensure safe transfer of the specified system load.

DRILL BITS

The correct selection of the drill bit dependent on the geological conditions on site is essential to ensuring a productive and cost-effective installation of the Self Drilling System.

Therefore, applied protective methods are directed towards a reduction of the corrosion attack and the respective damages to the reinforcement or ground control elements during their intended lifetime.

Corrosion Protection Methods

The selection of the optimal corrosion protection method(s) depends on the corrosion potential of the environment, and the type as well as the intended service life of the structure.

The load-bearing element, transition zone between borehole and surface, and the head construction must be assessed separately.

Corrosion protection methods are divided into two main groups.

The first one is called active, and comprises all influencing methods which eliminate or reduce the corrosion reaction. A common example for active corrosion protection is encapsulation with concrete.

The second one is called passive corrosion protection, including methods to produce a protective layer on corrosion endangered parts, for example duplex coating systems.

Self-drilling hollow steel bolt tendons for permanent application are reliably protected by surrounding body of cement grout. The following additional measures can be employed to improve the corrosion protection for special applications.

Hot-dip galvanized self-drilling anchor bolt

Galvanized self-drilling anchor system / full threaded steel self-drilling rock bolt / hollow anchor bar / anchor rods.

In order to reduce the corrosion rate and thus increasing the service life, SINODRILLS offer hot-dip galvanized systems. A complete hot-dip galvanized system is usually including hollow bar, coupler, nut and plate. All hot-dip galvanized items confirm to following standards:

Duplex Coating Introduction

According to EN ISO 12944-5, duplex systems are understood to be a corrosion protection system which consists of galvanizing in combination with one or more subsequent coatings.

The corrosion protection working mechanism of duplex systems is based on mutual protection of the partners. Protected by the powder coating, the zinc layer remains intact for an extended time period.

The hollow anchor bar incorporates a thread for standard rotary percussive drilling. Manufactured from high grade steel tubing, and Hollow anchor Bar is cold rolled to form standard Rope thread or “T” thread profiles. The Drill rolling process refines the grain structure of the steel, increasing the yield strength and producing a robust drill steel suitable for a range of drilling and grouting applications.

The Hollow Anchor Bar System includes a full range of drill bits, adaptor sleeves, couplers, nuts and bearing plates.

Key Features

■ Bars can be drilled into loose or collapsing soils without the need for a casing to support the borehole.

■ Continuous thread ensures that rods can be cut and coupled at any point, or extended.

■ Grout is injected at all points of the borehole as drilling is advanced, permeating the local strata for increased bond performance and producing bulbing in softer sections of the soil.

■ The self-drilling function enables bars to be drilled into most ground conditions for both tension or compression applications, and is also used as an injection conduit.

• Uses: Roof and wall bolting as a temporary support in tunnels.

Installation Procedure:

• Drilling, grouting, and anchoring, in one operation. The hollow steel anchor rod also acts as a grouting pipe to ease set up.

Design Considerations and Specifications:

• The ground is a vital element of the ground anchor system; therefore a good quality geotechnical investigation is essential. Various parameters to be considered during geotechnical investigations should include Classification of rocks (Geometry of discontinuities, unit weight, degree of weathering, Index test), Rock stratification, Unconfined compression strength of intact rock, Shear strength and deformability of rock mass, Permeability, Ground water conditions, Corrosion potentials of rock and ground water etc.

• Moreover, the design of the anchor system is based on rock parameters and the geometry of the anchor arrangement. Where changes in the anchor locations, spacing’s or inclinations are proposed, appropriate studies or proving tests should be undertaken to demonstrate the suitability of such an arrangement. The design of the anchor should consider the following-

• Loads and constraints of loading imposed by the anchors on the overall structure

• The way in which the loads will be applied to the anchor during its designed life i.e. static or dynamic

• The load distribution of the anchor arrangement on the structure during stressing and during the design life of the structure

• The interface between the anchor and the structure to ensure structural stability

• The consequence of anchor failure during stressing and thereafter. The diameter and tensile strength of bolt and also arrangement (number, spacing etc.) of rock bolts to be used may vary according to design. The diameter of rock bolts depend on the mass of the rock to be supported by each rock bolt and the force of resisting shear in the bedrock.

• EN 1997-1 – Geotechnical Design-Part 1: General Rules and BS EN 1537-2000- Execution of Special Geotechnical work- Ground Anchors may be followed for all geotechnical designs, installation of Ground Anchors. DIN 1054:2005-01 – Ground verification of the Safety of Earthworks and Foundations IS is also being used for geotechnical designs for ground anchors.

• Generally, Self-drilling Anchors for pipe roofs having minimum diameter 76 mm with a minimum yield load of 1200 kN are used as a temporary support in tunnels.  

• The yield loads of the bolt get transferred through thread to nut, washer, anchor plate and coupling etc. Hence, these should also be designed accordingly. The rolled thread should be in accordance with ISO 10208.

• Manufacturing of Self-drilling Anchors for pipe roof should conform to BS EN-10083- 1 “Steels for quenching and tempering - Part 1: General technical delivery conditions”.

• For all types of Self-drilling Anchors for pipe roof, the anchor head shall be designed in accordance to EN 1537:1999, and should be able to accommodate deformations, which may occur during the design life of the structure.

• Corrosion protection of Self-drilling Anchors for pipe roof should comply with Para 6.9 of EN 1537:1999.

• Tensile test of Self-drilling Anchors for pipe roof should be done in accordance to EN 10002-1. The test involves straining a test piece in tension, generally to fracture, for the purpose of determining one or more of the mechanical properties i.e. percentage elongation, tensile strength, yield strength, upper yield strength etc.

• Impact test of Self-drilling Anchors for pipe roof should be done in accordance to EN 10045-1. The test consists of breaking by one blow from a swinging pendulum, under conditions defined in code above. The energy absorbed is a measure of the impact strength of the material.

Note: All information comes from the Internet, please contact delete if it is inappropriate.

Use: Self-Drilling Rock Bolt is a rock-bolting system based on fully coarse threaded hollow bar. It is especially recommended for the following applications:

•Roof and wall bolting as a temporary support in tunnels.

• All ground conditions. Self-Drilling Rock Bolts do not require pre-drilling a hole, therefore making it usable even in soft rock conditions.

• Self-drilling bolts shall be used in ground conditions where the effective installation of other types of rock bolts is impossible.

• For loose ground/ fractured rock conditions, where drill holes collapses immediately during the drilling, the Self Drilling Anchors can provide immediate stabilization of the opening.

• It shall be grouted through the flushing hole immediately after completion of the drilling operation or simultaneously with the drilling as required.

Installation Procedure:

• Drilling, grouting, and anchoring, in one operation. The hollow steel anchor rod also acts as a grouting pipe to ease set up.

Design Considerations and Specifications:

• The ground is a vital element of the ground anchor system; therefore a good quality geotechnical investigation is essential. Various parameters to be considered during geotechnical investigations should include Classification of rocks (Geometry of discontinuities, unit weight, degree of weathering, Index test), Rock stratification, Unconfined compression strength of intact rock, Shear strength and deformability of rock mass, Permeability, Ground water conditions, Corrosion potentials of rock and ground water etc.

• Moreover, the design of the anchor system is based on rock parameters and the geometry of the anchor arrangement. Where changes in the anchor locations, spacing’s or inclinations are proposed, appropriate studies or proving tests should be undertaken to demonstrate the suitability of such an arrangement.

The design of the anchor should consider the following:

• Loads and constraints of loading imposed by the anchors on the overall structure

• The way in which the loads will be applied to the anchor during its designed life i.e. static or dynamic

• The load distribution of the anchor arrangement on the structure during stressing and during the design life of the structure

• The interface between the anchor and the structure to ensure structural stability

• The consequence of anchor failure during stressing and thereafter. The diameter and tensile strength of bolt and also arrangement (number, spacing etc.) of rock bolts to be used may vary according to design and site requirements. The diameter of rock bolts depend on the mass of the rock to be supported by each rock bolt and the force of resisting shear in the bedrock.

•EN 1997-1 – Geotechnical Design-Part 1: General Rules and BS EN 1537-2000- Execution of Special Geotechnical work- Ground Anchors may be followed for all geotechnical designs, installation of Ground Anchors. DIN 1054:2005-01 – Ground verification of the Safety of Earthworks and Foundations IS is also being used for geotechnical designs for ground anchors.

• Generally, Self-drilling Anchors/bolts having minimum diameter 32 mm with a minimum yield load of 200 kN are used for Rock bolting/ Face bolting as a temporary support in tunnels. 

• Adverse interactions of anchorages should be avoided, by keeping a space not less than 1.5 m between them, if possible.

• The yield loads of the bolt get transferred through thread to nut, washer, anchor plate and coupling etc. Hence, these should also be designed accordingly. The rolled thread should be in accordance with ISO 10208.

• Manufacturing of Self-drilling Anchors should conform to BS EN-10083-1 “Steels for quenching and tempering - Part 1: General technical delivery conditions”.

• For all types of Self-drilling Anchors, the anchor head shall be designed in accordance to EN 1537:1999, and should be able to accommodate deformations, which may occur during the design life of the structure.

• Corrosion protection of Self-drilling Anchors should comply with Para 6.9 of EN 1537:1999 as required.

• Tensile test of Self-drilling Anchors is done in accordance to EN 10002-1. The test involves straining a test piece in tension, generally to fracture, for the purpose of determining one or more of the mechanical properties i.e. percentage elongation, tensile strength, yield strength, upper yield strength etc.

• Impact test of Self-drilling Anchors should be done is done in accordance to EN 10045-1. The test consists of breaking by one blow from a swinging pendulum, under conditions defined in code above. The energy absorbed is a measure of the impact strength of the material.

• Pull out test on Self-drilling Anchors should be performed of on the basis of IS: 11309 – Method for conducting Pull-Out Test on Anchor Bars and Rock Bolts. - Minimum three pull out tests shall be conducted in one rock formation as mentioned in clause 4.8 of IS: 11309-1985 or as per the instructions of Engineer-in-charge.

Note: All information comes from the Internet, please contact delete if it is inappropriate.

The Self drilling anchor tools consist of a drill bit attached to a hollow steel tendon, which is drilled, installed and grouted at the same time, allowing ground improvement, increased productivity and economics.

SDA system is commonly used throughout the civil engineering and tunneling industries. They are used to improve the stability and load bearing characteristics of a rock mass. Within the civil engineering industry, self drilling anchor tools are used for fixing rock netting, slope stabilization, stanchion bases and rock fences. Self drilling anchor tools are also used in structural repairs on retaining walls, bridge spandrel walls and tunnels. In the tunneling industry, SDA systems are used for horizontal fore-poling, slope stabilization at the tunnel portal and for anchoring large section tunnels with high side walls.

      Advantage of Self drilling anchor tools

      • Greater productivity than conventional systems

      • No casing required in collapsing ground conditions

      • Unlimited service life

      • Composed of high yield, low carbon steel

      • Suitable for all ground conditions

      • Can be either passive or stressed

• SDA soil nails R25 to R51N

Soil nailing is a construction method used to maintain or increase the stability of soils by installing reinforcing elements (nails) according to the principles for the execution of geotechnical works. The soil reinforced with nails forms a supporting structure.

The nails are primarily subjected to tensile loads. In addition, bending and shear loads may occur as well. The structure must be so designed that the nailing forms a redundant system. One single nail may not serve as the only load-bearing element.

The principles for the application and execution of soil nail systems are specified in the application standard EN 14490: Soil nailing, and include information on the installation of soil nails, soil investigations, construction materials and products, design criteria and installation aspects as well as testing and surveillance of soil nail production. In addition, requirements regarding surface preparation, drainage and facing are discussed as well.

• SDA rock nails R25 to R51N

Similar in design to soil nails, rock nails serve to stabilize fractured and fissured rock.

• SDA micro-piles R32N to T111N

The piles are suitable to bridge soil layers with low load-bearing capacities and to lay foundations in deep load bearing soils. Tension micro piles are also used to protect against uplift, to activate effective soil as ballast. In narrow spaces, they are used to strengthen existing structures.

Self drilling anchor bolts are commonly used throughout the civil engineering and tunneling industries. They are used to improve the stability and load bearing characteristics of a rock mass.

Within the civil engineering industry, Self drilling anchor bolts are used for fixing rock netting, slope stabilization, stanchion bases and rock fences. Self drilling anchor bolts are also used in structural repairs on retaining walls, bridge spandrel walls and tunnels.

In the tunneling industry, self drilling anchor bolts are used for horizontal fore-poling, slope stabilization at the tunnel portal and for anchoring large section tunnels with high side walls.

The advantages

The advantages of the Self-drilling system are:

       • Variable applications.

       • Especially advantageous in rock/soils with low cohesion.

       • Simple to install in unstable boreholes.

       • No stalling when drilling across clefts.

       • Drilling and installation in one cooperation.

       • Grouting assured over full depth of the borehole.

       • No need to extract drill strings.

The main applications of Self Drilling Anchor Systems in Tunnel Construction

Self-drilling spiles • For stabilization ahead of working face • For safeguarding operations at the working face	Rock bolts • Anchoring system can accommodate rock pressure • Local stabilization of blocks and fault zones • Follow-up rock stabilization	Tunnel face anchors • Stabilization of working face in squeezing rock masses. • Stabilization of working face when using pipe umbrellas	Tunnel floor reinforcement • For strengthening the base of the tunnel arch

Soil nailing is a construction method used to maintain or increase the stability of soils by installing reinforcing elements (nails) according to the principles for the execution of geotechnical works. The soil reinforced with nails forms a supporting structure.

The nails are primarily subjected to tensile loads. In addition, bending and shear loads may occur as well. The structure must be so designed that the nailing forms a redundant system. One single nail may not serve as the only load-bearing element.

The principles for the application and execution of soil nail systems are specified in the application standard EN 14490: Soil nailing, and include information on the installation of soil nails, soil investigations, construction materials and products, design criteria and installation aspects as well as testing and surveillance of soil nail production. In addition, requirements regarding surface preparation, drainage and facing are discussed as well.

• Low-noise percussion drilling.

• No separate system installation, no casing and rod removal required. The drill bit remains in the ground serving as a spacer.

• Choice of drill bits for the most diverse ground conditions.

• Identical installation principle for all ground conditions and systems.

• The hollow core anchor rod serves not only to flush the borehole with air or water during drilling, but also to grout voids and to carry out high-pressure injections of the annular space.

• Choice of high-quality grouts and mixers.

• Flexibility in length by using couplers.

• Ability to work with small drill rigs without casing in narrow spaces.

• Enhanced corrosion protection.

• The high standard of QA systems consistently ensures high quality from production to installation of the injection anchors/piles.

• National and European approvals with CE marking.

• Drill bits of various diameters and types (as suitable for the respective ground).

• Hollow core anchor rods of various diameters with a continuous rolled left-hand thread and available in standard lengths of 1 m, 2 m, 3 m, 4 m and 6 m.

• Couplers to connect and extend the hollow core anchor rods, with center stop for enhanced energy transfer and sealing.

• Solid plates or domed plates for connection to the structure.

• Hexagonal nuts for anchoring and locking.

To ensure thread ability, the thread surface of the accessories may remain un-galvanized. Should small voids become visible on the anchor nut end facing towards the bar, these must be filled with zinc dust paint.

Agt, which is the percentage total elongation at maximum force, is that measure of elongation which excludes that considerable and highly localized extension of the steel under test in the area of plastic instability adjacent to the point of fracture.

Ductility is a measure of the degree of plastic deformation that has been sustained at fracture. A material that experiences very little or no plastic deformation upon fracture is termed brittle. The value of Agt can denote the ductility. For the sake of safety, the minimum number of 5% Agt is required for all Slef Drilling Anchor bars. Sinodrills guarantees minimum 6% in Agt.

Drilling tools are applied in many scenarios in tunnelling engineering, including blasthole drilling, pre-grouting, rock reinforcing, etc. Different scenarios require different features of the drilling tools.

We offer drilling tools for rock drilling, crushing duties and self-drilling anchors for pre-supporting with reasonable price and reliable performance.

Parameters

Size	O.D (mm)	I.D (mm)	Ultimate Load (kN)	Yield Load (kN)	Weight (kg/meter)
T30-11	30.0	11.0	320	260	3.3
T30-14	30.0	14.0	275	220	2.9
T30-16	30.0	16.0	245	190	2.7
T40-16	40.0	16.0	660	525	7.1
T40-20	40.0	20.0	540	425	5.6
T52-26	52.0	26.0	930	730	10
T73-56	73.0	56.0	1035	830	10.8
T73-53	73.0	53.0	1160	970	14
T73-45	73.0	45.0	1600	1270	17.5
T103-78	103.0	78.0	2270	1800	25
T103-51	103.0	51.0	3660	2670	44
Thread direction: Left hand / Right hand
Thread standard: ISO10280 / ISO1720 / Other international standards

        贵州中钻将于6月4日至7日参加在俄罗斯新库兹涅茨克举办的UGOL ROSSII & MINING展会。

       我们的展位设在6号馆C9,10展位。届时，我们将展示我司全套的凿岩钻具产品，同时我们的专业团队将全程在场，解答您的疑问，提供详尽的产品介绍和技术支持。

        我们希望能够通过此次展会与各位新老客户深入交流，分享我们的产品，并探讨未来的合作机会。我们热忱欢迎您的到来，并期待与您在展会现场相见。

        展会期间，我们的展位吸引了众多老客户前来参观，他们对我们在产品质量和技术服务方面的持续努力表示认可。老客户们与我们畅谈了合作进展和未来计划，为我们在欧洲市场的长期发展奠定了坚实基础。

        同时，展会期间也有大量新客户对我们的产品和服务表现出浓厚兴趣。他们在展位上与我们的专业团队进行了深入的沟通和探讨，并表达了合作意向，为我们在欧洲市场的进一步拓展创造了机会。

       通过此次展会，贵州中钻进一步强化了在欧洲市场的强占有率，并扩大了客户基础。在未来的市场竞争中，贵州中钻将一如既往地致力于为全体客户提供最优质的凿岩钻具解决方案，我们期待在欧洲市场再创辉煌！

        此次我们的展位在展会上备受瞩目的焦点。众多客户和行业专家前来参观，并对我们的产品和服务表现出了极大的兴趣。通过与客户的深入交流，我们不仅了解到了当地市场的需求和趋势，还与多家客户达成了初步合作意向，为未来的业务合作奠定了良好的基础。

        此次展会不仅让我们展示了中钻在凿岩钻具领域的实力，还加强了我们与当地市场的联系。我们感谢每一位莅临我们展位的客户和合作伙伴，期待在未来与每一位客户继续保持密切的联系。

      贵州中钻将继续秉持专业、创新、卓越的理念，不断提升产品和服务质量，为全球客户提供更好的凿岩钻具解决方案。让我们携手共进，共创美好的未来！

        贵州中钻将于2024年4月23日至25日参加在莫斯科举行的Miningworld展会。我们期待与每一位客户在Hall 3-C1055相见。

        作为中国凿岩钻具领先品牌，本次展会我们将携带全套凿岩钻具产品亮相，以满足客户多样化的需求。此外，我们专业的团队将也会为每一位客户提供个性化的解决方案，满足客户特定的需求。

        我们诚挚邀请每一位客户莅临我们的展位，共同探讨合作的可能性。期待与您在展会现场相会

        贵州中钻将于4月24日至27日参加法国巴黎举办的INTERMAT 2024展会。我们将在5A-G016展位诚挚恭候每一位客户的光临。

        作为中国凿岩钻具出口领先品牌，我们将在展会期间展示全套凿岩钻具产品，并提供个性化的产品解决方案。贵州中钻的专业团队将根据客户的需求，为他们量身定制产品解决方案。无论您是寻求性价比更高的产品、需要一站式的凿岩钻具供应商，还是希望探讨合作机会，我们都期待与您面对面交流。

      欢迎届时光临我们的展位5A-G016，一同探讨合作机会！

        展会期间，贵州中钻除了将展示全套凿岩钻具产品之外，我们专业的团队也会根据您的需求，为您提供定制化的产品解决方案。无论您是在寻找性价比更高的产品，还是一站式的凿岩钻具供应商，或是希望与我们建立联系，我们都期待与您面对面交流。

        贵州中钻期待与您的会面，洽谈潜在的业务机会和未来的合作进行

        展会期间，我司展位人流不断，现场展示的产品吸引了众多专业客户前来交流。交流过程中，我们所体现的专业性得到了观展客户的高度认可；此外，在展会期间我们还与多位客户进行了深入洽谈，最终成功签订多笔订单。这次展会不仅让我们与客户建立了更加紧密的合作关系，也为我们的产品在俄罗斯及周边市场的扩张奠定了坚实的基础。

        在未来，我们将继续致力于为客户提供更加优质的产品和服务，携手每一位客户，共同发展！

        我们很高兴地宣布，我们公司将参加将于2023年4月25日至27日举办的Mining World Russia 2023 展览会。届时，我们将在 Pavilion 1 Hall 1, A3043展位，展示我们的最新产品。

        我们热情地欢迎您前来参观我们的展位，在展览期间与我们见面。我们的团队将为您提供关于我们的产品和服务的一切信息，帮您解决关于产品和我们服务的任何疑问。

        我们有信心，我们在 Mining World Russia 2023 的参展将会取得巨大的成功，我们期待着在Pavilion 1 Hall 1, A3043 展位与您相见！

        在这个特殊时期，即便海外客户因跨国出行受限未能亲临展会现场，本次展会仍有3000余家国内企业出席参展，直接反映出国内整个工程机械行业的稳定复苏。在这样的背景下，也推动着我司不断升级品质和完善服务，以优化和提升产品竞争力。

        即便今年疫情对整个行业产生了短期的不利影响，我们仍将一如既往地秉承以高效、优质的产品服务于客户，携手每一位客户在逆境中一同砥砺前行，共同发展。

        二十余载砥砺奋进，我司始终秉承“潜心钻研，掘无止境”的使命，持续进行技术创新和产品优化，为我们赢得了国际市场广泛的认可与信赖。此次获得欧睿认证，是对我司多年来辛勤付出和卓越成绩的高度肯定。

        在全球市场竞争愈发激烈的今天，贵州中钻能够稳居行业领先地位，离不开每一位客户和合作伙伴的鼎力支持。正是你们的信任与合作，成就了我们的今天，也将激励我们不断前行，迈向更加辉煌的明天。

       展望未来，我们将继续以技术创新为核心，提升产品品质，不忘初心，砥砺前行，为全球客户提供更优质的凿岩钻具解决方案。

我们的三只 QL60 171 毫米的球齿钻头在 1 月 7 日至 20 日进行了测试，如下所示，这是钻井测试的总结

如下所示，这是我们从现场获取的#1好钻头详细的钻井记录

如下是现场经理对中钻潜孔钻头的总结。

花岗岩作为一种坚硬的岩石，对凿岩工具的磨损非常严重。因此，对凿岩工具的质量要求也更高。最近，我们的新一代 GSE DHD350 潜孔冲击器在使用过程中受到了客户的好评。我们的潜孔冲击器在不更换外管的情况下完成了 4900 米的花岗岩钻探，工作压力为 18 巴。这再次证明了我们产品的卓越性能

        作为现代凿岩钻具生产业内的领军企业，贵州中钻深知员工是公司最宝贵的财富之一。本次体检除了常规的检测项目以外，还安排了30余项详细的专项检查。我们还针对男女员工的生理特点，特别安排了定制的检查项目，旨在让员工能够全面了解自身的健康状况，并学会采取必要的健康管理措施，提升自我保健意识。

       公司一直秉承成果共享的理念，这次体检也是成果共享的一部分，旨在让员工分享公司取得的成功。公司将继续提供更优越的工作环境和广阔的职业发展机会，与所有中钻人共同塑造更美好的未来。

如下所示，这里有一些关于我们的 DHD340A 115 毫米球齿钻头性能的图片：

使用后

带有 1 个前孔和 1 个侧孔的金色锥形钻头，每个孔深 1.2 米，可钻 175 个孔

带有 2 个前孔和 1 个侧孔的黄色锥柄钻头，每个孔深 1.2 米，可钻 170 个孔

带有 1 个前孔和 1 个侧孔的黄色锥柄钻头可钻 160 个孔，每个孔的深度为 1.2 米。

        贵州中钻成立20年来，一直在不断地提高公司竞争力和品牌形象，海外市场占有率逐年递增的同时，“SINODRILLS(中钻)”品牌也成为越来越多的海外客户的首选。此次我司在海外商标的成功注册，不仅让“SINODRILLS(中钻)”品牌能够得到对应国家强有力的保护，同时也是我司在品牌建设方面的一个重要里程碑。

        7月9日，湖北省武穴市市长等一行6人来到贵州中钻机械设备有限公司进行实地考察，洽谈招商政策及投资事宜。

        考察过程中，我司总经理带领大家参观了贵州中钻展厅，办公场所，并远程视频了工厂生产车间。同时就公司现状、业务板块及海外销售等情况向大家进行了详细地报告。在随后的座谈交流会上，各级领导与我司管理层进行了详细交流，深入了解了我司发展历程、经营情况、研发投入、以及发展规划等情况。

        会上，各领导充分肯定我司在过去差不多20年的发展过程中所取得的成绩，现场为我司详细介绍了武穴市招商引资政策，就项目用地，项目合作的相关事宜做了深入的沟通，并初步达成了合作协议。

        此次体检项目除了常规身体检查、血液检查、职业病检查等项目外，还根据男性和女性生理特点特别定制了高端项目检查，以便让所有员工能够更加全面地了解自己的身体健康状况，增强自我保健意识。

        公司一直秉持“共同创造，共同分享”的经营理念，并将这一理念落实到实处。员工体检作为其中一项常务工作，也让全体中钻人共同分享公司所取得的成绩。

        “生如夏花，勇若木兰”。女性不论以何种身份，身居何处，都用自己的付出彰显责任和担当。柔肩扛重任，巾帼显担当，她们用辛勤的汗水、不懈的奋斗，撑起了职场和家庭的“半边天”，并成就着不平凡的自己。

        在此，我们感谢每位女同胞的贡献与付出，并祝福所有女同胞们节日快乐！

self-drilling anchor system increase the load-bearing capacity of the entire structure and act as a group of elements, withstanding tensile and shear forces acting on the self drilling anchor system. The center-to-center distance of nails must be chosen so that they are able to act as a complete nailing system. Prior to nail installation, the excavation face is generally supported by shotcrete, precast concrete elements, mesh, or geotextiles. The design of a nail head construction depends on the application and the intended lifetime of the structure.

SINODRILLS R Thread Self drilling hollow anchor bars (IBO)

Pile Foundation	Uplift Control	Abutments

Pile foundation systems either consist of single piles or a group of piles which are connected to each other by a pile cap structure. Micro piles are typically used for underpinning of civil structures, especially under limited space conditions or time constraints. By definition, micro piles consist of tubular steel elements with an outer diameter range of approx. 60 - 200 (mm). In general, micro piles act as a passive foundation system. Hollow bar micro piles are installed self drilling, typically using a large-diameter drill bit. Installation is accomplished with rotary or rotary-percussive drilling equipment, depending on the ground conditions and the intended installation length. Filling/grouting of the borehole is either performed simultaneously while drilling or afterwards. The grout serves as bonding medium which transfers the forces to the soil in terms of skin friction. Larger grout coverage also enhances the corrosion protection of the system.

Fields of Application

Rock Fall Protection	Portal Stabilization	Slope Stabilization

The basic concept of soil or rock nail is based on the installation of longitudinal reinforcement elements into the ground. Hence, this load-bearing system significantly differs from ground anchors (actively tensioned) and tensile piles, as the nail is installed un-tensioned (passive system). Consequently, self-drilling anchor system increase the load-bearing capacity of the entire structure and act as a group of elements, withstanding tensile and shear forces acting on the self drilling anchor system. The center-to-center distance of nails must be chosen so that they are able to act as a complete nailing system. Prior to nail installation, the excavation face is generally supported by shotcrete, precast concrete elements, mesh, or geotextiles. The design of a nail head construction depends on the application and the intended lifetime of the structure.

Conventional nail systems consisting of solid threaded bars are installed into pre-drilled holes and subsequently grouted. Self drilling anchor system used as soil nails are installed self-drilling, and are either grouted simultaneously during drilling or afterwards.

1, Ancho bit	2, Anchor bar	3, Anchor coupler	4, Anchor plate	5, Anchor nut

Beside this standard usage, the system is often applied to increase stability in portal sections and for the re-excavation of collapsed sections in underground construction. Another application area is ground improvement and waterproofing in combination with all tunnel construction methods.

Fields of Application

Main Advantages