The presssed and high strength stell anchor rod which we developed and researched, we used the steel strand combined with 1860MPa tensile strength of steel strand combined weth our polypyrimidine reveting stem tail patent technology bolts So that our steel strand anchou have common charccteristics of prestressed anchou fou easy installation,and also high strength steel anchou cable ,light weight advantages .
we have two specificaions ,17.8and 15.2.The largest breaking foue is 360Knand 260Kn.we are  also have prestressed aluninum pins in the tail nut design.The aluninum pins weill be start to the prestress more convenient afteu the duilling machine stir the anchor.