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Prepainted Galvanized Steel Coil

Product Standard:G3322 CGLCC ASTM A755 CS-B
Product Thickness:0.16-1.2mm
Custom Prepainted Galvanized Steel Coil sizes available upon request.
Availability:
StandardJIS G3322 CGLCC ASTM A755 CS-BSurface coating colorRAL colors
Back side coatingcolorLight grey ,white and so onPackageexport standard package or as request
Type of coating processFront: double coated&double drying. Back: double coated&double drying, single-coated&double drying
Type of substratehot dipped galvanzied, galvalume, zinc alloy, cold rolled steel, aluminum
Thickness0.16-1.2mmWidth600-1250mm
Coil Weight3-9TonsInside Diameter508mm Or 610mm
Zinc CoatingZ50-Z275GPaintingTop: 15 to 25 um (5 um + 12-20 um) back: 7 +/- 2 um
Coating introductionTop paint: PVDF, HDP, SMP, PE, PU
Prime paint: Polyurethane, Epoxy, PE
Back paint: Epoxy, Modified polyester
Productivity150,000Tons/year
Production core strengths
Resistance to acid rain:
Coating protection mechanism: It is very easy to form acid rain in the high level of industrial emissions or pollutants environment. Acidic penetration is formed in the surface of pre-painted steel, and accelerates the corrosion, forming blistering, peeling and so on.
Resistance ultraviolet rays:
Coating protecting Mechanism: pre-painted sheet in ultraviolet or strong sunlight conditions, the coating will exhibit chalking degeneration, manifested as discoloration and loss of gloss, lose paint quickly.
Resistance to humid heat:
Coating protecting mechanism: in hot and humid environments, high osmotic pressure of water vapor accelerates penetration, forming the degeneration of painting film, then the corrosion of the substrate, with the phenomenon of bubbles and peeling.
Resistance to low temperature:
Coating protecting mechanisms: most of the paint can keep stable processing performance above 0 degree, but at alpine region, the temperature will be below 20-40 degree, normal paint will become brittle,bend cracking, or even lose paint, thus protection function is lost totally.



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