... .grade: g30 4.automatic machine made steel link chain with blue zinc plated1. Material: carbon steel , Q195 , Q2352. ... DIN763 , DIN764 , DIN7664. Surface: electrical galvanized , hot galvanized , white-blue zinc plated , self color , 5. Grade: g30 , g43 , g806. ... 1/2 , 5/8 , 3/4 ,7/8 , 110. Long link chain: 1/8 , 5/32 , 3/16 , 7/ ... 8 , 3/4 ,7/8 , 111. Din5685 A/C short/long link chain: 2 ,2.5 , 3 , 3.5 , ...