Cold Drawn Alloy Steel SCM440 42CrMo Seamless Steel Pipe For Parts

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

Q: How about the delivery terms?
A: 1. Payment: T/T, 30% deposit in advance and balance before delivery.

2. Min. Order Quantity:3TON or as required.

3. Transportation: By express (DHL,TNT,),air,sea,and train.

Q: Do you accept sample order? 

A: Yes sure, please contact us for details.

Q: How about your after-sales service?

A: As a professional steel exporter, we offer promote technology support for all problems and questions.
Besides, we accept goods return or replace for quality problem.

Q: How does your company control the quality?

A: Quality first. In order to guarantee high quality for our products,
Modern always makes a serious inspection for all products and raw materials in strict procedure.


Why choose us?

1. We're Gold Supplier.  Evaluated by Alibaba.
2. More than 9 years exprience, especially in cold rolled steel pipe industrty.
3. Export to Korea, Pakistan, Brazil, Russia, India, Vietnam and other countries
4. Work with many famous brands, such as Tisco, Baosteel.
5. Quick response to your inquiry.
Timely communication and feedback.
6. Samples could be provided.
7. Excellent production technology.
Different shapes of products can be cut and provided.
8. Strong production capacity. Fast delivery capacity. Quick supply capacity. 

9. Strict Quality Control and Inspection in every process.

 
Our Advantages
1. We are a specialized manufacturer. Competitive price and quality from our own factory .
2. Best service with 24 hour`s reply .
3. Flexible payment with T/T,L/C , etc .
4. Smooth production ability(1000tons/month).
5. Quick delivery and standard exporting package .