Hydraulic MotorChina Qbh Customized Torsional Shear Tension Control Tc Bolt Nut Washer Railway Rairoad Hoisting Machinery Steel Sturcture Spare Unit, Find details about China GB/T 3632-2008, Assembled Set from Qbh Customized Torsional Shear Tension Control Tc Bolt Nut Washer Railway Rairoad Hoisting Machinery Steel Sturcture Spare Unit