High Grade Construction Prepainted Galvalume Steel

Pre-paint steel is a bare metal substrate or corrosion resistant substrate that has had paint applied to both sides through a continuous coil coating process, which produces a uniform paint finish. The metal is unwound, cleaned and chemically treated during the process. Depending on product specifications, one or both sides may then be primed and coated, oven cured and rewound.

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Description

High Grade Construction Prepainted Galvalume Steel

WanJuan Steel supplies a variety of prepainted steel sheet and coil products to meet customer needs. Our value-added service capabilities include slitting, shearing, stretcher leveling, blanking and metallurgical support.

Product Information

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	0.11-2.5mm	Width	600-1250mm
Coil Weight	3-9Tons	Inside Diameter	508/610mm
Zinc Coating	Z50-275g/㎡ AZ30-150g/㎡	Painting Coating Thickness	Top: 8-35 um Back: 3-25 um
Painting Color Style	2/1,2/2	Length	As,require
Coating introduction	Top paint: PVDF, HDP, SMP, PE, PU
	Prime paint: Polyurethane, Epoxy, PE
	Back paint: Epoxy, Modified polyester

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.