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threaded rod bolt :
1.Material: steel 2.Fuction : used as rock bolt for support 3.Diameter : 16mm 18 mm 20mm 22m
All Threadbar Bolt is used together with dome plate and net for reliable ground support in mines, tunnels, slopes.
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 .
(3)Low price, widely used in coal mines, railways, hydropower and other types of roadway projects.
2.PROPERTY:
| ITEM
| SPEC.
| MATERIAL
| BEARING CAPACITY (kn)
| HIGH-STRENGTH PLATE(Spherical)
| ||
| SIZE (mm)
| BEARING CAPACITY (kn)
| BORE DIAMETER (mm)
| ||||
| All-Thread Rebar Rock Bolt
| DQ-16
| HRB335
| ≥100
| 120×120×6
| ≥125
| 23
|
| DQ-18
| HRB335
| ≥125
| 120×120×8
| ≥170
| 23
| |
| DQ-20
| HRB335
| ≥155
| 120×120×8
| ≥170
| 26
| |
| DQ-22
| HRB335
| ≥185
| 150×150×8
| ≥220
| 26
| |