... -25mm 3.grade: g30 4.automatic machine made steel link chain with blue zinc plated1. Material: carbon ... steel , Q195 , Q2352. OEM is welcome3. Standard: DIN5685 A/C , DIN763 , DIN764 , DIN7664. Surface: electrical galvanized , hot galvanized , white-blue zinc plated ... , self color , 5. Grade: g30 , g43 , g806. Packing: gunny bag , plastic drums , steel drums , wooden box ...