drywall screws for corner bead

The galvanizing process of galvanized wire products is a very effective metal anticorrosion method. It is also widely used in other industrial fields. The use of galvanized iron wire is very common in metal structure equipment of various industries. Due to the influence of production technology or other factors, the zinc layer of galvanized wire products will be different to a certain extent, especially ordinary galvanized can not reach the beauty of electric galvanized, the zinc layer of ordinary galvanized wire is mainly for corrosion prevention.

D, coating adhesion; The zinc layer of the plating parts should be firmly combined with the base metal with sufficient adhesion strength, and will not fall off or bulge after the hammer test.