1.Material:steel 2.Function:mine,tunneling support 3.Diameter:16mm18 mm 20mm 22mm We are a professiona supplier for the rock bolt, which is coupled with all thread bar ,dome plate and net for reliable ground support in mines, tunnels, slopes, and so on. Our extremely...

Hot rolled with high continuous deformation over entire bolt length Coarse left hand thread with 10mm(8mm) pitch The high deformation thread bar provides good load transfer between bolt and resin (cement). Continuous thread over the bar length provides high flexibility in...