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TSECD Hot Dipped Prepainted Galvalume Steel Sheet Coil

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Zinc Coating:Z40~Z275 or AZ40~AZ150(AL55%) Model number:0.13-1.2mm*914-1250mm Top paint:15-30um Back paint:5-10um/5+10~20um
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Product description
Parameters
Models

Standard

JIS G3322 CGLCC ASTM A755 CS-B

Surface coating color

RAL colors

Back side coating color

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

Z50-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

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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