... . 2,Certicification:ISO9001 :2008,CE,GS G80 Welded Link Chain:We can supply alloy steel chain G80 ,G60,G43 and G30.Japanese standardStainless steel ... 304 or stainless steel 316, or alloy steelSize: from 4mm-36mmDin standard link chain ... /16'',1/2'',5/8'',3/4'',7/8'',1''High test chain (Grade43)Size:1/4'',5/16'',3/8'',7/16 ...