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06-13
2018
Introduction of welding stud welding
Introduction of welding stud welding The welding nail belongs to a fastener with high stiffness connection. The welding nail is the abbreviation of the cylind...
06-13
2018
Tightening operation of twisting and shearing bol...
Tightening operation of twisting and shearing bolts for special wrenches of torsional shear type 1. Twist the bolt to install the reaction support and tighten...
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