... -4.5mm 4.Finished: Zinc coated Quick DetailsPlace of Origin: China(Mainland) Size: as your favorModel Number: Concrete NailGrade: as ... Standard model: DIN, GB, ISO, ANSI, ASME, JIB etc.Material: Carbon Steel, Stainless steel, Aluminium, Brass. Coating: Plain, zinc plated, galvanized ... and are widely used. These are made of high-quality carbon steel and are zinc-plated to provide strength and corrosion ...