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304/316 Stainless Steel B8m Hg20613 DIN939 Heavy-Duty Threaded Rods Double Stud Bolt, Find Details and Price about Stud Heavy-Duty Stud from 304/316 Stainless Steel B8m Hg20613 DIN939 Heavy-Duty Threaded Rods Double Stud Bolt - Chengdu Shiwei Jiecheng Machinery Technology Co., Ltd