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 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


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