Thread Bar Anchor Bolt:
Diameter :16 18 20 22 25mm
Contain: all thread bar bolt, non-rib or rib thread bolt,slot and wedge bol

Thread Bar Anchor Bolt 

 (Prestressed Bolt) :

Thread bar Bolt is composed of screw thread steel bar , high strength plate ,casting damping nut ,yield tube, washer , and other accessories . According to the structure of steel bar ,the bolt has two stypes : Rib Rebar Bolt and Non-Rib Rebar Bolt .

The bolt is usually used in thick coal seam ,that has high stress, large deformation, difficult to support and other poor environment .

Feature :

(1) The bolts have high strength stress ,good support capacity can prevent the roof from sinking down ,and the strata sliding .

(2) Fast and easy installation by mechanized tools.

(3) Be used with resin anchoring cartridge for permanent support .

(4) Be used in high stressed ,large deformed area .

(5) Low price, widely used in coal mines, railways, hydropower and other types of roadway projects.

(6)Thread profile has higher strength than rod and offers excellent mixing capabilities in resins installation