prepainted aluminum with Ralcolor coated

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The main differences between pre-roller-coated and spray-coated aluminum sheets lie in the process flow, surface characteristics, and applicable applications: Process Differences ‌Pre-roller-coating: Using a continuous roll-coating process, the aluminum sheet undergoes pre-treatments such as pickling and leveling on an assembly line, followed by multiple computer-controlled baking cycles, ultimately resulting in a coated aluminum coil. ‌Spray-coating: The aluminum sheet undergoes forming processes such as bending and welding before being sprayed manually or by machine. Surface Characteristics ‌Flatness and Smoothness‌: The pre-roller-coated surface is smooth and free of micropores, with a film thickness tolerance of less than 0.5 microns. Spray-coating, due to static electricity, has a film thickness tolerance of approximately 7 microns and may exhibit orange peel texture. ‌Stain Resistance‌: The pre-roller-coated surface is non-granular and washes away easily with rainwater. Spray-coated surfaces are susceptible to stains and are difficult to clean. ‌Abrasion Resistance‌: The pre-roller-coated surface has strong adhesion, while the spray-coated surface is prone to partial flaking. ‌ Applicable Scenarios ‌Pre-roller coating‌: Suitable for flat surfaces or simple shapes (such as flat curtain walls). It has more processing restrictions (e.g., welding or polishing is not possible), but it provides excellent color control and a uniform coating.

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CHANGZHOU JIAYE NEW MATERIALS CO., LTD.

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4 month

Address: China

Main Product: color coated aluminum, prepainted metal, Home Appliance, Stainless castings , pre-coated stainless, VCM Corrosion resistant film

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