G3322 Cglcc ASTM A755 CS-B Prepainted Galvanized Steel Coil
G3322 CGLCC ASTM A755 CS-B Prepainted Galvanized Steel Coil StandardJIS G3322 CGLCC ASTM A755 CS-BSurface coating colorRAL colorsBack side coatingcolorLight grey ,white and so onPackageexport standard package or as requestType of coating processFront: double coated&double drying. Back: double co......
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Product Description
G3322 CGLCC ASTM A755 CS-B Prepainted Galvanized Steel Coil
| Standard | JIS G3322 CGLCC ASTM A755 CS-B | Surface coating color | RAL colors |
| Back side coatingcolor | Light grey ,white and so on | Package | export standard package or as request |
| Type of coating process | Front: double coated&double drying. Back: double coated&double drying, single-coated&double drying | ||
| Type of substrate | hot dipped galvanzied, galvalume, zinc alloy, cold rolled steel, aluminum | ||
| Thickness | 0.16-1.2mm | Width | 600-1250mm |
| Coil Weight | 3-9Tons | Inside Diameter | 508mm Or 610mm |
| Zinc Coating | Z30-Z275G | Painting | Top: 15 to 25 um (5 um + 12-20 um) back: 7 +/- 2 um |
| Coating introduction | Top paint: PVDF, HDP, SMP, PE, PU | ||
| Prime paint: Polyurethane, Epoxy, PE | |||
| Back paint: Epoxy, Modified polyester | |||
| Productivity | 150,000Tons/year | ||
| 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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