ASTM A653 Hot Dipped Galvanized Steel Coils Z180 0.71MM*1220MM

ASTM A653 Hot Dipped Galvanized Steel Coils Z180 0.71MM*1220MM

The products of galvanized steel sheet and coils are mainly used in such industries as construction industry, light industry, automobile industry, agriculture-livestock-fishery industries and commercial industry etc. For construction industry, galvanized steel sheet can be used to produce the anti-corrosive roof panels and roof grille etc. For industrial and civil construction usage. For light industry, producing appliance housings, civil chimneys and kitchenwares etc. For automobile industry, producing anti-corrosive auto parts for cars etc. For agriculture-livestock-fishery industry, producing appliances for storage and transportation of grain, frozen processing appliances for meat and aquatic products and so on. For commercial industry, producing appliances for storage and transportation of goods and materials, packaging appliances and so on.

ASTM A653 Hot Dipped Galvanized Steel Coils Z180 0.71MM*1220MM

The process of hot-dip galvanizing results in a metallurgical bond between zinc and steel, with a series of distinct iron-zinc alloys. The resulting coated steel can be used in much the same way as uncoated.

A typical hot-dip galvanizing line operates as follows:

✔Steel is cleaned using a caustic solution. This removes oil/grease, dirt, and paint.

✔The caustic cleaning solution is rinsed off.

✔The steel is pickled in an acidic solution to remove mill scale.

✔The pickling solution is rinsed off.

✔A flux, often zinc ammonium chloride is applied to the steel to inhibit oxidation of the cleaned surface upon exposure to air. The flux is allowed to dry on the steel and aids in the process of the liquid zinc wetting and adhering to the steel.

✔The steel is dipped into the molten zinc bath and held there until the temperature of the steel equilibrates with that of the bath.