Hebei District zinc steel fence fence zinc steel manufacturers _ _ dimensional cell screen Wyatt Certified

Zinc steel balcony railing base by six components, namely: (1) steel layer (Base steel): base, hardness values ??159DPN; (2) zinc steel alloy layer (Zeta layer): the closest base a dense alloy layer structure is complicated, strong corrosion resistance to FeZn7 and FeZn13 compounds exist, hardness value 211DPN, containing Fe 7% -11%; (3) sub-layer of lead (Delta layer): significant single monoclinic columnar structure, Fe content of 6%, non-toxic, corrosion resistance, hardness values ??179DPN; (4) a pure zinc layer (Eta layer): dense hexagonal, texturing easy to break, zinc 98.5%, the hardness value is 70DPN; (5) high zinc phosphate coating: good resistance to corrosion and enhance adhesion of the coating and the substrate; (6) high-temperature curing layer: excellent corrosion resistance and anti-impact performance, with excellent resistance to UV , antioxidant and surface self-cleaning properties, color change rate of less than 5% for 15 years. Zinc steel fence process: zinc steel for - Correction - metal processing - surface finish - high temperature pre skim - Skim temperature - hot water rinse - rinse - surface conditioning - zinc phosphide - water shower - pure second spray - spray --UF1 cathodic electrodeposition --UF0 spray --UF2 spray - water shower - Electrophoresis curing - Electrostatic powder coating - powder curing - finished assembly. Into polyester powder coating color coating, cathodic electrodeposition layer, zinc phosphate coating, hot-dip zinc coating, zinc, steel grass and other five.