China Galvalume steel coil suppliers china introduces galvanized materials
China Galvalume steel coil suppliers china tells you that the defects of galvanized materials mainly include: shedding, scratches, passivation spots, zinc particles, thick edges, air knife streaks, air knife scratches, exposed steel, inclusions, mechanical damage, steel Poor base performance, wavy edge, warped ladle, inconsistent size, embossing, the inconsistent thickness of zinc layer, roll printing, etc.