rock bolt for roof support, mining, bridge, slope with high strength

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Rock bolt, in tunneling and underground mining, steel rod inserted in a hole drilled into the roof or walls of a rock formation to provide support to the roof or sides of the cavity. Rock bolt reinforcement can be used in any excavation geometry, is simple and quick to apply, and is relatively inexpensive. The installation can be fully mechanized. The length of the bolts and their spacing can be varied, depending on the reinforcement requirements. There are three major ways of anchoring the r…


  • High Srength Rock Bolt/ Anchor Bolt: is an advanced rock bolt which can Ensure anchoring effect for complex ground conditions ranging from sand and gravel to inconsistent fill, boulders, rubble and weather rock.
  • Application: tunneling, mining, slope stabilization and foundation support
  • Standard: MT 145.2; YB/T 4363; GB/T 20065; Or as clients’ request


  Steel Grade Yield Strength Tensile Strength Elongation After Fracture Elongation under Max Force Impact Absorb Energy
Rel/MPa Rm/MPa A/% Agt/% kv2/J
Industrial Standard MG335/MG400 335 500 15   40
MG500 500 700 22   100
Our company Standard 600 600 750 19 9 90
700 700 850 17 7.5 80
785 785 930 16 5.5 60
830 830 1030 15 4.5 50

QQ截图20181106141716 QQ截图20181106141739

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