Thread Bar Bolt
Thread bar bolt is used together with dome plate and nut for reliable ground support in mines, tunnels, slopes, etc.
Features:
----- It has equal tensile strength in the longitudinal direction, that is about 40% higher than the reverse-twist bolt in the same specification;
----- Extend the support area, not only be used by end anchoring, but also be used by fully anchoring, which has a better support efficiency;
----- Widely used in coal mines, railways, hydropower and other types of roadway projects.
Parameters:
|
Item
|
Type
|
Material
|
Bearing Capacity
|
High-Strength Plate (Spherical)
|
|
Size (mm)
|
Bearing Capacity
|
Hole Dia. (mm)
|
|
Thread Bar Bolt
|
DQ-16
|
HRB335
|
≥100KN
|
120×120×6
|
≥125KN
|
23
|
|
DQ-18
|
HRB335
|
≥125KN
|
120×120×8
|
≥170KN
|
23
|
|
DQ-20
|
HRB335
|
≥155KN
|
120×120×8
|
≥170KN
|
26
|
|
DQ-22
|
HRB335
|
≥185KN
|
150×150×8
|
≥220KN
|
26
|
|
