| Item | Value |
| Color | silver, Black |
| Finish | Bright(Uncoated) |
| System of Measurement | Metric |
| Place of Origin | China |
| Brand Name | ZF |
| Model Number | 40,42,30,33 |
| Material | Steel |
| Diameter | 30,33,40,42,43 |
| Capacity | 2000kgs/piece |
| Standard | GB |
| Product name | Friction Anchor Bolt |
| Material Spec | Q235,345B |
| Diameter Options | 40,42,30,33,46,47 |
| Surface treatment | Zn- Plated |
| Application | metal mines |
| MOQ | 1000PCS |
| Length | 1200,1500,1800,2000,2500 |
| Sample | Available |
| Package | Pallet |
| Payment Term | T/T |
"Three forces will be applied to the nearby rock when the slotted bolt is inserted into a hole that is smaller than the pipe diameter. One of these forces acts radially on the hole wall throughout the entire length of the slotted bolt, another acts as a friction force to stop the surrounding rock from sliding, and a third acts as a supporting force for the slotted bolt's pallet bracket. The three forces increase the stability of the nearby rock."
Established in 2011, the company has built its own modern large-scale industrial and mining supporting material production workshop, anchoring automation workshop, mesh workshop and bolt workshop. It is a modern high-tech enterprise company integrating research and development, production and sales of industrial and mining supporting accessories.
There are 105 of us, including 16 high-tech researchers. The company is equipped with several large-scale testing equipments to ensure the product quality and safety in production. Through the team's perfect management system and strict production process, every production link will be treated with the meticulous care of craftsmen, and the defective products will never enter the market. The company mainly produces resin anchoring agent, welding mesh, diamond mesh, anchor rod, dome plate, W copper belt, U-shaped steel frame and steel strand. Annual production of 30 million anchors, 3 million square meters of mesh, 21,000 anchors and more than 15,000 other accessories. It has been widely used in 28 provinces and cities, and has made great contributions to the domestic coal mine support industry and railway and dam construction.
Now it has established long-term cooperation with more than a dozen domestic large coal mining enterprises, and its products are exported to Southeast Asia, Africa and other developing countries.