| After-sales Service: | Quick After-Sales Service |
|---|---|
| Warranty: | 2 Year |
| Certification: | ISO 9001:2000 |
| Standard: | AISI, ASME, BS, JIS, GB, GOST, ASTM, DIN |
| Surface Treatment: | Without Processing |
| Material: | High Strength |
| Customization: |
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Self-drilling hollow bolt is a full threaded rod that can be drilled and grouted in weak surrounding rocks such as fractured rock strata and loose soil without casing and drill pipe.It can integrate the functions of drilling, grouting and anchorage, and has the characteristics of convenient construction, reliability and so on.The surface of the rod is processed into standard threads, which can be reliably connected with standard rock drilling tools such as drills, bolt trolleys and grouting machines.
Product application
As an effective anchorage method, the self-drilling hollow bolt developed by our company is suitable for geological support engineering with complex, loose, broken and easy to collapse after drilling. It is widely used in advanced support, radial support, slope support, foundation pit support, roadway support, soil nail wall, pull-back bolt retaining wall and other surrounding rock support engineering.
Product composition
Hollow bolt, solid threaded steel, connecting sleeve, slurry channel, anchor head, grouting stop pad, nut, exhaust pipe
Product features
This product is inserted into the early strength anchorage agent of the drilling hole through the front end of the composite rod body part of the threaded steel rod, to achieve fast anchorage, through the hollow bolt grouting, so that the bolt grouting is full and solid. Because the hollow bolt body is connected with the solid bolt body through the special connection section and constitutes the whole bolt body, and the pulp channel is on the connection section, the efficiency of the material can be fully developed, with great implementation value and social and economic benefits.
| Model | Tensile strength(kN) | Yield force(kN) | Rate of elongation(%) | Remark |
| HER25N | 200 | 150 | 8 | Can be machined into left or right hand thread according to customer needs. |
| HER32L | 210 | 160 | 8 | |
| HER32N | 280 | 230 | 8 | |
| HER32S | 360 | 280 | 8 | |
| HER32S1 | 405 | 320 | 8 | |
| HER38N | 500 | 400 | 8 | |
| HER38S | 550 | 450 | 8 | |
| HER51L | 550 | 450 | 8 | |
| HER51L1 | 660 | 540 | 8 | |
| HER51N | 800 | 630 | 8 |
Q: Are you trading company or manufacturer ?
A:Yes, We are factory, all machine is made by ourself and we can provide customize service according to your requirement.
Q: Is there any installation direction after we received the machine .
A:
1.The machine will have one year warranty.
2. Send the product catalog and instruction manual.
3. If you have any question PLS contact us online or send us email, we promise we will give you a reply at the first time!
4. Personal call or visit are warmly welcome.
Sale of services:
1. We promise honest and fair, it's our pleasure to serve you as your purchasing consultant.
2. We guarantee punctuality, quality and quantities strictly implement the terms of contract.
Suppliers with verified business licenses
Audited Supplier 
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