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Self drilling anchor bolt combines drilling, grounting and anchoring together. It ensures the anchoring effect in complex ground conditions. It's safe, reliable and efficient.


| Hexagonal nut | |||
| Size | SW (mm) | Length(mm) | Weight(kg/pc) |
| R25 | 41 | 41 | 0.30 |
| R32 | 46 | 45 | 0.35 |
| R32 | 46 | 65 | 0.45 |
| R38 | 50 | 60 | 0.50 |
| R51 | 75 | 70 | 1.55 |
| T76 | 100 | 80 | 2.8 |
| T103 | 165 | 80 | 3.0 |
Note: Customized products are also available based on your specific requirements. we are constantly striving to improve our products and therefore | |||
| Spherical nut | |||
| R32 | |||
| R38 | |||
| R51 | |||
| T76 | |||
| T30 | |||
| T40 | |||
| T52 | |||
| T73 | |||
| T103 | |||
| T127 | |||
| Steel grade | As per request | ||
| Thread direction | Left hand / Right hand | ||
| Thread standard | ISO 10208 / ISO 1720/ Other international standards | ||
| Hardness (HRC) | Hardness (HRC) | ||
| Features | All nuts are machined and with chamfered edges to suit both domed plates and solid plates. | ||
Self drilling anchor bolt system is mainly used for tunnel and underground engineering, slope engineering, ground and foundation engineering. It can be used for pre-construction support and can effextively enhance the stability of soil and rock mass.Self drilling anchor bolt system is mainly used for tunnel and underground engineering, slope engineering, ground and foundation engineering. It can be used for pre-construction support and can effextively enhance the stability of soil and rock mass.

Self drilling anchor bolt is composed by hollow anchor bolt, anchor nut, anchor plate, anchor coupler, drill bit, centralizer, and the hollow anchor bars can be cut and lengthened by coupling on request.
Customized products are also available based on your specific requirements.
Guizhou Sinodrills Equipment Co., LTD (abbreviated as GSE) is an international market-oriented enterprise specialized in manufacturing, supplying and services of rock drilling tools industry. Owning two factories and working in close collaboration with another two strategic cooperative partners, we supply a full range of drilling product, including four categories as below:
Top-hammer (TH) drilling
Down the hole (DTH) drilling
Self-drilling anchors
Drag bits

Founded in 2002, we have experienced an enormous change and development over the past decade. In virtue of reliable quality, competitive pricing, professional and valuable service, we now have grown to be a leading supplier in drilling industry. As a modern corporation, we operate strictly in compliance with the ISO9001 quality management system, and some of our products have passed European CE certification. We always adhere to the principle of “Sincerity-oriented, Credibility first”, and we have been classified as a 3AA2 enterprise by the world famous credit rating agency-Dun & Bradstreet. By the end of 2016, our products had been sold into 95 countries, such as Germany, France, Sweden, USA, Canada, Italy and Spain, meanwhile, we are gaining recognition and praise from a growing number of clients.

More than just drills, We deliver reliability
We are constantly improving our production processes and using high-quality raw materials to produce higher quality drills. However, we understand that no drill can handle all the challenges posed by different types of rocks. When these problems arise, your biggest concern is whether you can get a quick response and reasonable solutions from suppliers. Suppliers may be negligent, delaying, or even ignoring your concerns.
We deeply understand your concerns, which is why we always adhere to an efficient and responsible attitude to provide you with comprehensive service. Whether it's pre-sales, in-sales, or after-sales, our goal is to help you reduce drilling costs per meter and ensure that you can confidently make every purchase.
By choosing Sinodrills, you not only get excellent product quality but also enjoy a worry-free service experience. Let's face challenges together and build a path to success!

Comprehensive and robust supply system
As a one-stop supplier of rock drilling tools, we offer a wide range of drilling tools to meet all of your needs. Whether you require Top hammer, DTH drilling, self-drilling anchor tools or drag bits, we have everything you need to get your job done.
Our comprehensive selection of products is designed to help you maximize efficiency and productivity, while ensuring your safety and satisfaction.

OUR QUALIFICATIONS
ISO45001:2018 Health and Safety management system
ISO9001:2008 Quality management system
Dun & Bradstreet 3AA2 Certificate
SGS Certificate for Self-drilling anchor bolts
1 Invention Patent Certificates
14 Utility Model Patent Certificates

At Sinodrills we give great importance to three things: always being a reliable partner, keeping our products cost effective and providing fast solutions whenever our customer is in need.
Q1:Are you a manufacturer?
A1:Yes, we have 2 plants to manufacture a wide range of drilling products, including DTH drilling tools, TH(Top hammer)drilling tools, Self-drilling anchoring(SDA) tools and drag bits. Meanwhile, for some items we do not produce in our own plants, we are authorized distributors by some brands, like G brand if TH(Top hammer) drill rods. So we are one-stop supplier if a wide range of rock drilling products.
Q2:What qualifications do you have?
A2:By the end of 2021,we have following qualifications:
ISO9001 managements system;
ISO45001 occupational Health and Safety Management System
3AA2 credit rating by Dun & Bradstreet;
EC examination certificate for self-drilling anchor bars.
3 invention patents & 10 utility patents.
Q3:Where have you exported and what was your annual export amount?
A3:By the end of 2021 we have exported tom108 countries and our annual export amount in 2021 was 28.6 million USD.
Q4:What kind of payment terms do you offer and what is your best payment terms?
A4:We offer different payment terms, including T/T, D/A, A/P, L/C, and O/A,etc. Our best payment terms is 120 days after shipping date for our exclusive distributors and some VIP clients.
Q5:Do you offer warranty on your products?
A5:We offer different payment terms, including T/T, D/A, A/P, L/C, and O/A,etc. Our best payment terms is 120 days after shipping date for our exclusive distributors and some VIP clients.
Q6:Do you offer OEM service?
A6:Yes,we have a flexible business model, providing OEM service
New products from manufacturers at wholesale prices