connecting link: 1) Standard:DIN,JIS,ANSI,BSW,GB,non-standard 2) Grade:G80. 3) Materials:steel,iron,SS,carbon steel etc. connecting link: 1) Standard:DIN,JIS,ANSI,BSW,GB,non-standard 2) Grade:G80. 3) Materials:steel,iron,SS,carbon steel etc.Connecting Link:1) Standard: DIN, JIS, ANSI, BSW, GB, non-standard2) Grade: G803) Materials: stainless steel 201.202. S304, S316.316L,410,4304) Surface ...