With continuous R or T thread, the bar can be connected by the coupling.
Features:
1) It is made of high-strength steel by rolling, and the material conforms to GB/T 3077 "alloy structural steel".
2) The R-type hollow bar is produced with a left-handed wave thread, which uses a large pitch standard thread. The thread shape conforms to ISO 10208 "rock drilling tool - left-handed wave thread" and ISO 1720 standard, and can be combined with a corresponding nut, coupling. , drill bit, adapter, etc.
3) The T-type hollow bar is produced with a left-handed large pitch trapezoidal thread, and it can be assembled with nut ,coupling, drill bit, adapter, etc.
4) Surface treatment requirements such as galvanizing, epoxy and double anti-corrosion can be selected according to the conditions of use.
5) The length is usually 3m, 4m, 6m.
6) If the customer has special requirements for the diameter, length, thread or surface treatment of the rod, it can also be customized.
Applications:
It can be used as a drill pipe when drilling, and can be used as a grouting pipe during grouting. It can be used as a reinforcing rib after installation.
Advantage
1) High strength and quality material is selected, the hollow bar has high strength and plasticity;
2) The hollow structure is used to make it more resistant to bending and shearing than solid bar of the same cross-sectional area;
3) The inner hole of the hollow bar can be used as a grouting passage;
4) The bar is processed by rolling to process the continuous thread, which can be used for any cutting or be connected by coupling for a longer length, and can be used in a small space.
5) The full-length continuous thread can have better adhesion to the cement layer, it can be used as strong support for tunnels and rock slopes.
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 |
HANDAN TOPMETAL CO.,LTD. has been in the line of steel products for the geotechnical and civil engineering many years. The company has been supplying the quality products and excellent service to the customers of many countries in the world. Management team of the company is consisted of experienced specialists in the products and exporting. She enjoys good reputation in the relevant lines.
The company mainly supplies the seamless steel pipe, PC strand, threaded hollow bar, solid threaded bar, ERW pipe and the accessories,etc. for the geotechnical and civil engineering of infrastructure, deep foundation, tunneling and mining, slope and embankment stabilization, etc. The products feature a wide range of applications such as micropiles, rock bolts, soil nails, ground anchors, spiling bolt, port tie rods, etc. We can also supply all kinds of fasteners and thread products for the building and construction.
The company has her own factory, and also keeps deep, smooth and stable relationship with the cooperated manufacturers, thus ensures the company to supply the products of the reasonable price and good quality to the customer by the timely and steady delivery. Customer satisfaction is at the forefront of our performance at all times.
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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