hot-dip galvanizing A572Gr60 H-shaped steel
Process flow of hot-dip galvanizing A572Gr60 H-shaped steel Surface pretreatment: pickling removes oxide scale and impurities to ensure that the steel surface is clean. Galvanizing: immerse the H-shaped steel in zinc liquid, and zinc reacts metallurgically with the steel surface. Cooling and inspection: Cool after taking out to form a uniform galvanized layer.