Bimetallic Twin Screw and Barrels Zhejiang Jinteng Machinery Manufacture Co., Ltd. Base Info Material：High Strength SteelType：Hexagon Head With FlangeConnection：Common BoltHead Style：HexagonalStandard：GBGrade：6.8Trademark：JT SCREWSpecification：ISO 9001: 2000Origin：China Description Pre：Steel Heavy Rail U71mn 43kg/M GB Next：Camlock--on Sell Camlock Hose Quick Coupling Reducing Fitting
