All Threadbar 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 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.) |
DIA.: 16mm, 18mm, 20mm, 22mm, 25mm available | MG335 | 335 | 490 | 20 |
| MG400 | 400 | 585 | 20 | |
| MG500 | 500 | 630 | 18 | |
| MG600 | 600 | 800 | 18 |
Nuts and Washers also available
Thread Bar
