hot galvanized link chain 1.we are manufacturer 2.diameter: 3-25mm 3.grade: g30 4.automatic machine made hot galvanized link chain1. Material ... . Standard: DIN5685 A/C , DIN763 , DIN764 , DIN7664. Surface: electrical galvanized , hot galvanized , self color , black painted 5. Grade: g30 , g43 , g806 ... , c&f , cif8. Short link chain: 1/8 , 5/32 , 3/16 , 7/32 , 1/4 , 5/16 , 3/8 , 7/16 ...