产品详细信息
Chemical rock 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 .
相关证明的文件
没有发现相关证明的文件。
公司详细资料
Shandong Tongrui Mining Technology Co.,Ltd was founded in 2007 in Tai an, Shandong, China. In 2011 we set up GSI(Ground ...