Hollow bar anchor is pull rod that transfer anchored structures or geotechnical loads to a stable formation. Pressure grouting of the anchor bar through the hollow bar body can achieve the purpose of consolidating the broken rock mass, blocking the groundwater and the anti-corrosion of the rod body, and rapidly forming the supporting force to control the stability of the surrounding rock. It is widely used in tunnels, mining, slope stabilization and underground engineering support. Suitable for anchoring some loose geological structures (crushed, sandy and fragile soils). Hollow bar anchors are mainly produced by high-strength seamless pipes.
Features and advantages:
1. Hollow design realizes the function of grouting pipe and avoids the loss of mortar caused by the traditional grouting pipe.
2. Grouting is full, and pressure grouting can be realized to improve the quality of the project.
3. Neutrality is good, the mortar can wrap the entire length of the anchor body to avoid rust and achieve long-term support.
4. It is easy to install, and it is convenient to install the plate and nut without machining the thread on site.
Application:
The hollow bar anchor has been successfully applied in rock and soil anchoring engineering such as tunnel construction, slope treatment, foundation pit retaining wall and mining, and has achieved good economic benefits.
Drill bits, nut, plate and coupler, etc.will be accembled accordingly.
| Type |
Outer Dia.(mm) |
Inner Dia.(mm) |
Ultimate Load(KN) |
Yield Load(KN) |
Weight(kg/m) |
| R25N |
25 |
14 |
200 |
150 |
2.3 |
| R32L |
32 |
22 |
260 |
200 |
2.8 |
| R32N |
32 |
21 |
280 |
230 |
2.9 |
| R32/18.5 |
32 |
18.5 |
280 |
230 |
3.4 |
| R32S |
32 |
17 |
360 |
280 |
3.5 |
| R38N |
38 |
21 |
500 |
400 |
4.8 |
| R38/19 |
38 |
19 |
500 |
400 |
5.5 |
| R51NL |
51 |
36 |
550 |
450 |
6.3 |
| R51N |
51 |
33 |
800 |
630 |
8.0 |
| T76N |
76 |
51 |
1600 |
1200 |
16.5 |
| T76S |
76 |
45 |
1900 |
1500 |
19.7 |
Q1:Can you send samples?
A:Of course, we can provide customers with free samples and express shipping service to all over of the world.
Q2:What product information do I need to provide?
A:Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.
Q3:It's my first time to import steel products, can you help me with it?
A:Sure,we have agent to arrange the shipment, we will do it together with you.
Q4:What about product prices information?
A:Prices various according to periodic price changes of raw materials.
Q5:Do you provide custom made Products service?
A: Yes,if you have your own design , we can produce according to your specification and drawing.
Q6:What are the certifications for your products?
A:We have ISO 9001, MTC, third parties' inspections are all available such SGS, BV ect.
Q7:How long does your delivery time take?
A:In general, our delivery time is within 7-15 days, and may be longer if the quantity is extremely large or special circumstances occur.
Q8: How many countries you already exported to?
A:We have exported to America, Canada, Brazil, Chile, Colombia, Russia, Ukraine, Thailand, Myanmar, Vietnam, India, Kenya, Ghana,somalia and other African countries.Our export experience is rich, we familiar with different market demands, can help customers avoid a lot of trouble.
Q9:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.
Q10:Does the product have quality inspection before loading?
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed and customers can appoint third parties to inspect the products before loading too.
Q11:What is your working time?
A:In general, our online service time is Beijing time: 8:00-22:00, after 22:00, we will reply to your inquiry in the coming working day.
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