As ISO 1461, ASTM A123, and EN10240, the galvanizing process has its own built-in means of quality control because zinc does not react with an unclean steel surface. So Surface Preparation is a critical step.
A hot alkali solution, mild acidic bath removes organic contaminants such as dirt, paint markings, grease, and oil from the metal surface.
Pipe and fittings are completely immersed in a bath of molten zinc. The bath chemistry is specified by ASTM B6, and requires at least 98% pure zinc, to form series of bonded zinc-iron alloy layers.
TPMC is experienced in hot dip galvanizing, testing and packaging conforming to UL request, and supplies high quality galvanizing products to clients.
