Pre Painted Steel Sheet With 1500mm-5800mm Length Galvalume Steel Base And RAL Color Customization

Pre Painted Steel Sheet With 1500mm-5800mm Length Galvalume Steel Base And RAL Color Customization

1．Product Overview

Pre painted steel sheet is used where a coated steel substrate and a finished color surface are both required in one material. This product range covers 0.18–1.2mm thickness, 700–1250mm width, and 1500–5800mm length, which makes it suitable for panel fabrication, cladding parts, appliance panels, and other sheet metal applications where both appearance and processing compatibility matter.

The product can be supplied on galvanized steel, galvalume steel, or cold rolled steel base. In corrosion resistant applications, the base metal choice is one of the main technical factors, because substrate type directly affects outdoor durability, edge performance, and long-term service condition.

2．Technical Solution

The sheet uses a painted coating system built on steel substrate. The top side uses 15–20 micron polyester with 5 micron primer. The back side uses 5–7 micron, or 7–8 micron polyester with 5 micron primer. This coating build is relevant in actual use because surface performance depends not only on color selection but also on primer support, top coat thickness, and substrate stability during fabrication and installation.

The available coating systems are PE, SMP, HDP, and PVDF. PE is commonly used for standard interior or light exterior applications. SMP is typically selected where better weather resistance is needed. HDP is used where stronger durability is required. PVDF is more suitable where UV exposure, chemical stability, and long-term color retention are more important.

Galvalume steel base is often selected when the project requires an aluminum-zinc coated substrate. For this type of application, corrosion resistance is determined by the combination of base metal, coating system, cut edge condition, and service environment rather than by paint layer alone.

3．Specifications

4．Application

This material is suitable for roofing sheets, wall cladding, façade panels, and other building envelope parts where a finished color surface is required.

It can also be used for appliance panels, interior decorative panels, furniture parts, signage, and general fabricated sheet components.

When galvalume steel base is selected, the product is more suitable for applications where corrosion resistance and surface appearance must be considered together in outdoor or semi-exposed conditions.

5．Processing

• The sheet can be supplied in cut length for direct fabrication.
• It is suitable for cutting, bending, roll forming, profiling, and general sheet metal processing.
• When the final part has visible surface requirements, protective film on the top side can be used to reduce handling damage during transport and installation.
• Base metal and coating type should be selected together according to forming severity, outdoor exposure, and the expected service condition.

6．Advantages

• The 0.18–1.2mm thickness range is suitable for light to medium sheet fabrication.
• The 700–1250mm width range matches common panel and cladding processing routes.
• The 1500–5800mm length range supports both shorter fabricated parts and larger panel layouts.
• Multiple coating systems allow the sheet to be matched to standard use, weather resistant use, or longer-life exterior applications.
• RAL color customization supports project-based appearance matching.
• High recyclability supports applications where material recovery and sustainability are part of the project requirement.

7．How to Choose

• Choose galvanized steel base for general painted sheet applications where zinc-coated substrate is required.
• Choose galvalume steel base when the project requires aluminum-zinc coated substrate and stronger corrosion resistance in exposed service conditions.
• Choose cold rolled steel base when the application is mainly for interior or protected-use fabrication.
• Choose PE for standard use, SMP for stronger weather exposure, HDP for higher durability demand, and PVDF for exterior applications requiring stronger UV and chemical resistance.
• Choose thickness according to panel rigidity, forming route, and installation span. Choose length according to blank layout, transport condition, and installation size.

8．FAQ

Q1．What is the thickness range of this pre painted steel sheet
The thickness range is 0.18–1.2mm.

Q2．What width range is available
The width range is 700–1250mm.

Q3．What length range is available
The length range is 1500–5800mm.

Q4．What base metals are available
Available base metals are galvanized steel, galvalume steel, and cold rolled steel.

Q5．Can the color be customized
Yes. The color can be supplied according to the RAL card or according to the client request.