Waterproof Multi Color Corrugated Steel Roofing Sheets for Roofing and Wall Cladding

1．Product Overview

Waterproof corrugated steel roofing sheets are designed for roofing and wall cladding applications that require weather resistance, surface durability, and stable appearance.

The product uses hot dipped galvalume steel as the base metal, combined with an organic color coating system. The corrugated profile helps improve roof drainage and sheet rigidity, while the coated surface provides color consistency and outdoor protection for building projects.

2．Technical Solution

The sheet is produced from galvalume steel substrate with AZ coating from 50–180g/m². After coating, the material is roll formed into corrugated roofing profiles.

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 selected for stronger UV resistance and longer exterior service.

3．Specifications

4．Application

This product is suitable for roofing sheets, wall cladding, steel structure buildings, warehouses, workshops, commercial buildings, industrial buildings, container-related panels, and home appliance applications.

It is commonly used in projects requiring lightweight installation, waterproof roof performance, corrosion protection, and customized color appearance.

5．Processing

• Sheets can be supplied according to required project length.
• Different effective widths and corrugated 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 corrugated profile supports efficient rainwater drainage for roofing applications.
• The galvalume substrate provides stable corrosion protection for outdoor use.
• The 50–180g/m² AZ coating range supports different exposure environments.
• PE, SMP, and PVDF paint systems allow selection according to weather resistance requirements.
• Bright and matt finishes are available for different appearance needs.
• Customized colors help match architectural and project design 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 coating systems are available
PE, SMP, and PVDF coating systems are available.

Q3．Can customized colors be supplied
Yes. Colors can be produced according to RAL Card or customer-approved samples.

Q4．What is the available coating range
The available AZ coating range is 50–180g/m².

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.