| Standard: | DIN, ANSI, GB, JIS, BSW |
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| Material: | Medium Carbon Steel |
| Connection: | Welding |
| Samples: |
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| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier 
The Self Drilling Anchor system is comprised of a hollow threaded anchor bar with a sacrificial drill bit that performs drilling, anchoring and grouting in a single operation. Self drilling anchor system is mainly used in slope stabilization, tunneling pre-support, foundations with micro piles etc projects.
Advantages and Characteristics as below:
1. No casings required, because anchor bars can be drilled into loose soils without needing casings to support the boreholes.
2. Fast drilling and installation, because drilling, installation and grouting are in a single operation.
3. Both rope threads and trapezoid threads are robust and ideal for rotary-percussive drilling and ensuring a high level of bond with the borehole gout.
4. The hollow core not only serves for flushing during drilling, but also for grouting after drilling.
5. Continuous threads ensure the bars can be cut and coupled at any point, or extended.
6. Different anchor bits are available for different ground conditions.
R thread anchor bar or called rock bolt, soil nail, which is a kind of threaded hollow bar, bar surface with an rope thread according to ISO 10208 & 1720. It was firstly invented by MAI on 1960S to solve the low construction speed on complicated underground works, nowadays; it is very popular all around the world.
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Size |
O.D(mm) |
I.D(mm) |
Ultimate Load(KN) |
Yield Load(KN) |
Weight(kg/M) |
|
R25N-14 |
25.0 |
14.0 |
200 |
150 |
2.3 |
|
R32L-22 |
32.0 |
22.0 |
210 |
160 |
2.8 |
|
R32N-21 |
32.0 |
21.0 |
280 |
230 |
2.9 |
|
R32N-18.5 |
32.0 |
18.5 |
280 |
230 |
3.4 |
|
R32S-17.5 |
32.0 |
17.5 |
360 |
280 |
3.5 |
|
R32S-15 |
32.0 |
15 |
360 |
280 |
4.1 |
|
R38N-21 |
38.0 |
21.0 |
500 |
400 |
4.8 |
|
R38N-19 |
38.0 |
19.0 |
500 |
400 |
5.5 |
|
R51L-38 |
51.0 |
38.0 |
550 |
450 |
6.0 |
|
R51L-36 |
51.0 |
36.0 |
550 |
450 |
7.6 |
|
R51N-36 |
51.0 |
36.0 |
800 |
630 |
7.6 |
|
R51N-33 |
51.0 |
33.0 |
800 |
630 |
8.4 |
|
Steel grade |
Acc. to EN10083-1 |
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Thread direction |
Left hand |
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Thread standard |
ISO 10208 / ISO1720 |
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Q: Are you trading company or manufacturer?
A: We are trading company.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: 30% T/T in advance ,balance before shippment.
Q: Why choose us?
A: 1) Reply you in 24 working hours.
2) Experienced staffs would like to answer all your questions in time.
3) Customized design is available. ODM&OEM are welcomed.
4) Special discount and protection of sales are provided to our consumers.
5) We can provide free sample, consumer should pay the freight first, and the expensive sample cost will be added in the next order.
6) As an honest exported seller, we always use professional factory, quality quotation, good service, skilled technicians to ensure our products to be finished in high quality and stable feature.
Suppliers with verified business licenses
Audited Supplier 
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