Coating Raw Material Coating Type Zinc plated Black zinc plated Yellow zinc plated Zinc nickel Raw Material Steel 4.8 Stainless Steel A2 Stainless Steel A4 Polyamid PA 6.6 DDKKM23,81,2M2,54,71,5M35,61,65M47,52,2M59,22,5M6113M814,54M10185M12226M16298