- Contact Person : Mr. JING WANG
- Company Name : Shijiazhuang Tanrimine Metalwork Co., Ltd.
- Tel : 86--311-87306157
- Fax : 86-311-87306158
- Address : Hebei,Shijiazhuang,1km south of Zhuangyuan Road and Jingyuan Road, Yuanshi County, Shijiazhuang
- Country/Region : China
Rock Bolt
Rock Bolt is used together with dome plate and net for reliable ground support in mines, tunnels, slopes etc.
1.FEATURES :
(1) In the longitudinal direcition , rock body has equal tensile strength ,that is about 40% higher than the reverse-twist bolt in the same specification .
(2) Extend the support area , not only be used by end anchoring ,but also be used by fully anchoring ,that has a better support efficiency .a
(3)Low price, widely used in coal mines, railways, hydropower and other types of roadway projects.
2.PROPERTY:
SPEC. | MATERIAL | TENSILE STRENGTH Mpa (Min.) | YIELD STRENGTH Mpa (Min.) | ELONGATION Mpa (Min.) |
Thread Bar Rock Bolt: M16, M18, M20, M22, M25 available, different length available, head screw length 100-150mm. Special Screw Available | MG335 | 335 | 490 | 20 |
| MG400 | 400 | 585 | 20 | |
| MG500 | 500 | 630 | 18 | |
| MG600 | 600 | 800 | 18 | |
| Soild round bar Bolt: M16, M18, M20, M22 available, different length available, head screw length 100-150mm . Special Screw Available, other material available | Q235 | 375-500 | 235 | 26 |
| Q345 | 470-630 | 345 | 21 | |
| 45# | 600 | 355 | 16 | |
| 40Cr | 980 | 785 | 9 |
Nuts and Washers and plates also available
Rock Bolt
