... .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 , 19. Medium link chain:1/8 , 5/32 , 3/16 , 7/32 ... you quotation immediately . steel link chain with blue zinc plated