China Threaded rods manufacture from M6 diameter though M100 diamater specifacation: A193 Gr.B7, B7M, B8, B8M （M6-M10） A320 Gr.L7 ...Explore More
our factory manufacture washers which include flat washers and spring washers specifacation: ASTM F436 F436M DIN125, DIN6916 Explore More
