JIS G3322 CGLCC ASTM A792 Prepainted Corrugated Steel Roof Sheets 1500–3800mm Length for Roofing and Wall Cladding

JIS G3322 CGLCC ASTM A792 Prepainted Corrugated Steel Roof Sheets 1500–3800mm Length for Roofing and Wall Cladding

1．Product Overview

Prepainted corrugated steel roof sheets are designed for roofing, wall cladding, industrial buildings, warehouses, workshops, and light construction projects.

The product uses hot dipped galvalume steel as the base metal, with a color-coated surface and corrugated profile. The AZ coating provides substrate protection, while the paint layer improves weather resistance and surface appearance. The corrugated profile supports roof drainage and panel rigidity.

2．Technical Solution

The sheet is produced from CGLCC or DX51D+AZ galvalume steel substrate according to JIS G3322, ASTM A792, and EN 10169 standards.

The top surface uses 15–20 micron polyester plus 5 micron primer. The back surface uses 5–7 micron or 7–8 micron polyester plus 5 micron primer.

Available paint systems include PE, SMP, and PVDF. PE is suitable for standard roofing applications, SMP is used for improved weather resistance, and PVDF is suitable for stronger UV exposure and longer exterior service.

3．Specifications

4．Application

This product is suitable for roofing sheets, wall panels, steel structure buildings, warehouses, workshops, portable houses, industrial buildings, commercial buildings, home appliance panels, and general construction projects.

It is commonly used where the finished sheet requires lightweight installation, corrosion protection, stable color appearance, and formed panel rigidity.

5．Processing

• Sheets can be supplied in customized lengths from 1500mm to 3800mm.
• Different effective widths and wave profiles can be arranged according to roofing layout.
• The product supports cutting, stacking, bundling, and export packing.
• Customized RAL colors can be produced according to project requirements.

6．Advantages

• The galvalume substrate provides corrosion protection for roofing and wall cladding applications.
• The 0.14–1.50mm thickness range covers common roof sheet requirements.
• The 1500–3800mm length range supports different roof layout designs.
• The corrugated profile improves panel rigidity and rainwater drainage performance.
• PE, SMP, and PVDF paint systems support different outdoor exposure conditions.
• Customized RAL colors help match building design and project requirements.

7．How to Choose

• Choose PE coating for standard roofing and wall cladding projects.
• Choose SMP coating when better weather resistance is required.
• Choose PVDF coating for high UV exposure or longer exterior service.
• Choose higher AZ coating levels for humid, coastal, or industrial environments.
• Choose sheet thickness according to roof span, wind load, and required panel rigidity.
• Confirm effective width, length, wave profile, color, and packing method before production.

8．FAQ

Q1．What is this product used for
It is used for roofing sheets, wall cladding, warehouses, workshops, steel structure buildings, and general construction projects.

Q2．What is the available length range
The available length range is 1500–3800mm.

Q3．What coating systems are available
PE, SMP, and PVDF paint systems are available.

Q4．Can customized colors be supplied
Yes. Colors can be produced according to RAL Card or customer-approved samples.

Q5．Can the wave profile be customized
Yes. Standard wave width is 76mm and wave height is 17mm, and customized profiles can be discussed according to project requirements.