China Cheap price Mig Welding Galvanized Steel - ASTM 653 Prepainted PPGL DX51D DX52D SGCC Galvanized Steel Sheet Coil - Ruiyi Manufacturer and Supplier | Ruiyi

The zinc flower of hot dip Galvanized Coil is a kind of technology to reduce the solidification temperature of liquid zinc (the solidification temperature of pure zinc is 419 ℃) and prolong the growth time of zinc flower crystal by producing a large number of crystal nuclei. High purity zinc coating (galvanizing layer) can not form zinc flower. For example, adding tin (< 0.5%) to solidify at 198 ℃; adding cadmium to solidify at 264 ℃; adding lead to solidify at 317 ℃; adding antimony (< 0.3%) to solidify at 409 ℃; or spraying the surface of zinc coating with steam flow or SO2 gas flow can form large zinc flower as soon as possible.