- Overview
- Product Description
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- Company Profile
- FAQ
Basic Info.
Product Description
Hollow anchor bar means a rod that transfers the structures or geotechnical load to a stable rock formations, anchor bolt consists of bar, drill bit, coupling, plate, grouting stopper and nut. Widely used as an efficient anchoring means, in tunnel pre-support, slope, coast, mine, water conservancy projects, building foundation, roadbed reinforcement and geological diseases treatment such as landslip, crack, sink age. It's irreplaceable in narrow construction environment. Hollow anchor bar is made of seamless tube with high strength.
Features of Hollow Grouting Anchor Bar:
• Fits standard Boomer, ROC and Mustang rigs.
• Particularly suitable for difficult ground conditions.
• A high rate of installation since drilling, placing and grouting can be performed in one single operation.
• Self drilling system eliminates the requirement for a cased borehole.
• Installation with simultaneous drilling and grouting possible.
• Easy installation in all directions, also upwards.
• Suitable for working in limited space, height and in areas of difficult access.
• Simple post grouting system.
• Hot-dipped galvanizing for corrosion protection
Advantages and Characteristics :
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.
7.Duplex anti-crossion prosess ,hot-dip galvanized and epoxy coating system.
R38 R51 Self-drilling hollow grouting anchor bolt/Rod/Bar Used in construction field
| BAR DIAMETER | AVERAGE INNER DIAMETER | MINIMUM NET AREA THROUGH THREADS | MINIMUM ULTIMATE STRENGTH | MINIMUM YIELD STRENGTH | NOMINAL WEIGHT | PART NUMBER |
|---|---|---|---|---|---|---|
| 32 mm (1-1/4") | 0.787" (20.0 mm) | 0.556 in² (359 mm²) | 58.4 kips (260 kN) | 47.2 kips (210 kN) | 2.1 lbs/ft (3.1 kg/m) | B7X1-032N |
| 32S mm (1-1/4") | 0.626" (15.9 mm) | 0.776 in² (501 mm²) | 81.5 kips (363 kN) | 66.0 kips (294 kN) | 2.7 lbs/ft (4.0 kg/m) | B7X1-032S |
| 38 mm (1-1/2") | 0.830" (21.1 mm) | 1.067 in² (688 mm²) | 112 kips (498 kN) | 90.7 kips (404 kN) | 3.76 lbs/ft (5.6 kg/m) | B7X1-038N |
| 51 mm (2") | 1.187" (30.1 mm) | 1.795 in² (1158 mm²) | 188 kips (837 kN) | 152 kips (677 kN) | 6.26 lbs/ft (9.3 kg/m) | B7X1-051N |
| 76 mm (3") | 1.890" (48.0 mm) | 3.880 in² (2503 mm²) | 407 kips (1811 kN) | 329 kips (1466 kN) | 13.79 lbs/ft (20.5 kg/m) | B7X1-076N |
| item | value |
| Color | silver, Black |
| Finish | Bright(Uncoated), Longer Life TiCN |
| System of Measurement | INCH, Metric |
| Place of Origin | China |
| | Hebei |
| Brand Name | LB |
| Model Number | hollow grout rock bolt |
| Material | Steel |
| Diameter | 12mm |
| Capacity | Strong |
| Standard | GB |
| Product name | Hollow Grout Rock Bolt |
| Length | Customized Length |
| Sample | Availabe |
| Raw Material | Steel |
| Application | Mining |
| Feature | Easy Install |
| Delivery time | 15-30days |
| PAYMENT | 30% Deposit+70% Balance |
| Quality | Excellent |
We are a manufacturer and exporter specializing in providing supporting materials for coal mines, construction projects and large concrete projects. We mainly produce anchor rods, trays, resin anchors, mesh, W steel belts, u-beams, anchors and other supporting materials for coal mine projects, and our supporting materials are exported to more than ten countries and regions, such as the United States, Europe, Russia and so on. It is one of the important manufacturers and exporters of anchoring materials in China.
We have passed a series of certificates such as Quality Management System Certification and Environmental Management System Certification.
Our enterprise vision is: casting industry famous brand, building industrial and mining leading enterprises.
we can supply high-quality products to meet the requirements of top-ranking customers in this field from different countries in the world.
We always strive to be the leader in the industry and create a more valuable one-stop service platform for coal mine support materials for our customers.
1. who are we?
We are based in Hebei, China, start from 2011,sell to Domestic Market(50.00%),Southeast Asia(10.00%),North America(9.00%),Africa(9.00%),Western Europe(5.00%),Mid East(5.00%),Eastern Europe(3.00%),South America(2.00%),Oceania(2.00%),South Asia(1.00%),Eastern Asia(1.00%),Southern Europe(1.00%),Central America(1.00%),Northern Europe(1.00%). There are total about 101-200 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Friction Bolt, Solid Deformed Bar, Resin Capsule, Welded Wire Mesh Sheet, Domed Plate
4. why should you buy from us not from other suppliers?
Handan Zhongfu Industrial and Mining Accessories Co., Ltd. was established in 2011, located in Hebei-Yongnian, China's fastener industry base. It has built its own modern large-scale industrial and mining supporting material production workshop, anchoring
5. what services can we provide?
Accepted Delivery Terms: FOB;
Accepted Payment Currency:USD;
Accepted Payment Type: T/T,L/C,D/P D/A;
Language Spoken:English,Chinese