RAL 1030 Prepainted GI Steel Sheet DX51D 700–1250mm for Roofing and Wall Cladding

1．Product Overview

RAL 1030 prepainted GI steel sheet is designed for roofing sheets, wall cladding, steel structure buildings, and decorative construction applications requiring a durable painted surface and stable forming performance.

The product uses hot dipped galvanized steel or galvalume steel substrate combined with a continuous color coating process. The painted surface improves weather resistance, appearance consistency, and corrosion protection for exterior applications.

2．Technical Solution

The steel sheet combines galvanized or galvalume substrate with primer and finish coating layers.

Available coating systems include PE, SMP, and PVDF. PE coating is suitable for general roofing and wall panels. SMP coating provides improved weather resistance for outdoor environments. PVDF coating is suitable for projects requiring stronger UV resistance and longer exterior durability.

The standard paint coating structure uses 25±5 micron top coating and 7±2 micron back coating to maintain coating consistency and forming performance during fabrication.

3．Specifications

4．Application

This prepainted GI steel sheet is suitable for roofing sheets, wall panels, steel structure workshops, warehouses, airport buildings, storage facilities, vehicle panels, home appliances, and decorative construction panels.

It is commonly used where the final product requires a finished painted appearance, stable roll forming performance, and corrosion protection.

5．Processing

• The sheet can be supplied in coil form or processed into cut-to-length sheets.
• It is suitable for roll forming, bending, profiling, roofing sheet production, and wall cladding fabrication.
• Protective film can be applied on the top side to reduce surface scratches during transportation and installation.
• Custom cutting and slitting are available according to project requirements.

6．Advantages

• The galvanized or galvalume substrate provides stable corrosion protection for roofing and cladding applications.
• The 0.12–1.00mm thickness range supports common building panel processing requirements.
• The 700–1250mm width range is compatible with mainstream roll-forming production lines.
• PE, SMP, and PVDF coating systems support different outdoor service environments.
• The 25±5 micron top coating provides stable color coverage and surface durability.
• Commercial quality and LFQ options support forming and profiling applications.

7．How to Choose

• Choose PE coating for standard roofing sheets and wall cladding applications.
• Choose SMP coating when improved weather resistance is required.
• Choose PVDF coating for projects with higher UV exposure and longer outdoor service requirements.
• Choose galvanized substrate for general construction applications.
• Choose galvalume substrate for projects requiring improved heat reflectivity and corrosion resistance.
• Confirm color, gloss, coating type, and protective film requirements before production.

8．FAQ

Q1．What is the difference between PE, SMP, and PVDF coatings
PE is suitable for standard applications, SMP provides improved weather resistance, and PVDF offers stronger UV resistance and longer outdoor durability.

Q2．What is the available thickness range
The available thickness range is 0.12–1.00mm.

Q3．Can customized RAL colors be supplied
Yes. Customized RAL colors can be produced according to customer requirements.

Q4．Can the sheet be supplied with protective film
Yes. Protective film can be applied on the top side when required.

Q5．Is the product suitable for roofing sheet production
Yes. The product is suitable for roofing sheets, wall cladding panels, and roll-formed building components.