750–1250mm Prepainted Color Steel Coils with Z60–Z275 Zinc Coating for Roofing and Construction Applications

750–1250mm Prepainted Color Steel Coils with Z60–Z275 Zinc Coating for Roofing and Construction Applications

1. Product Overview

Prepainted color steel coils are designed for roofing, wall cladding, appliance panels, and light industrial fabrication where both corrosion resistance and decorative surface finish are required. The product combines a galvanized or galvalume substrate with an organic coating system to improve weather resistance, appearance stability, and processing performance.

This specification covers width ranges from 700 mm to 1250 mm and thickness from 0.12 mm to 1.20 mm, supporting mainstream roll forming, roofing sheet production, and construction panel fabrication.

The product is available in multiple RAL colors and coating systems including polyester, SMP, and PVDF depending on outdoor exposure and durability requirements.

2. Technical Solution

The coating system combines metallic substrate protection with organic paint protection.

Main technical features include:

• Hot dipped galvanized or galvalume steel substrate

• Zinc coating range from 20 g/m² to 275 g/m²

• Polyester, SMP, or PVDF paint systems

• Top coating system with primer and finish paint

• Reverse-side protective coating

• Commercial quality or LFQ processing performance

• Protective film option for visible architectural surfaces

The zinc layer mainly protects the steel substrate against corrosion, while the paint system improves weatherability, gloss retention, and color durability.

For outdoor roofing and cladding applications, zinc coating level and paint system are typically selected together according to environmental conditions and service life requirements.

3. Specifications

4. Application

• Roofing sheets for workshops, warehouses, and airports

• Wall cladding and facade panels

• Container plate applications

• Household appliance outer panels

• Vehicle and transportation panels

• Electrical equipment panels

• Roll formed construction profiles

5. Processing

• Cut-to-length sheet production

• Slitting into narrow coils

• Roll forming into roofing profiles

• Bending and folding

• Protective film lamination

• Custom width and length processing

6. Advantages

• Zinc coating range supports different corrosion environments

• Multiple paint systems available for different weathering requirements

• Wide width range suitable for roofing and panel production

• LFQ option improves forming and profiling performance

• RAL color customization supports architectural design requirements

• Protective film option helps reduce handling scratches during fabrication

7. How to Choose

• General indoor or standard roofing projects → polyester coating is commonly used
• Projects requiring improved weather resistance → SMP coating is often selected
• High UV exposure or coastal environments → PVDF coating is recommended
• Higher corrosion resistance requirements → select higher zinc coating levels
• Architectural visible surfaces → confirm gloss, color, paint thickness, and protective film requirements before order
• Complex profiling or bending applications → LFQ material is generally preferred

8. FAQ

Q1: Is this product PPGI or PPGL?

It can be supplied as either PPGI or PPGL depending on whether the substrate is galvanized steel or galvalume steel.

Q2: What coating systems are available?

Polyester, SMP, and PVDF coating systems are available according to project durability requirements.

Q3: Can the coil be processed into roofing sheets?

Yes. The material is commonly used for roofing sheet roll forming, wall panels, and construction profiles.

Q4: What is LFQ?

LFQ means Lock Forming Quality, which provides improved forming performance for bending and profiling applications.

Q5: Is protective film available?

Yes. Protective film can be applied to the top painted surface when required for transportation or fabrication protection.