锈 链 STAINLESS STEEL LINK CHAIN SUS304/316 锈 链 STAINLESS STEEL LINK CHAIN SUS304/316 标 JAPANESE STANDARD DIN766 标 DIN766 STANDARD DIN5685 标 DIN5685 STANDARD DIN763(DIN5685C) 标 DIN763(DIN5685C) 韩 标 KOREAN STANDARD 标 AUSTRALIAN STANDARD ASTM80 标 ASTM80 STANDARD NACM90 标 NAC90 STANDARD JAPANESE STANDARD DIN766 STANDARD DIA INSIDE LINGTH 宽 INSIDE WIDTH T/M WEIGHT/M MM MM MM KG 2 12 3.5