Color Coated PPGI / PPGL Steel Coil in 700–1250mm Width with 25±5μm Top Coating for Roofing, Construction, and Home Appliance Panels

Color Coated PPGI / PPGL Steel Coil in 700–1250mm Width with 25±5μm Top Coating for Roofing, Construction, and Home Appliance Panels

1. Product Overview

Prepainted steel coil is used where a finished color surface and substrate corrosion protection are required at the same time. In roofing sheets, wall cladding, appliance housings, and light fabricated panels, the painted surface reduces secondary finishing work and provides a more stable appearance for visible applications.

This product range covers 0.2–1.0 mm thickness and 700–1250 mm width, which is suitable for cut-to-length production, roll forming, and general panel fabrication. Depending on project specification, the base metal can be galvanized steel for PPGI or galvalume steel for PPGL.

2. Technical Solution

Product performance is based on:

• Hot dipped galvanized or hot dipped galvalume substrate as the base protective layer
• Organic paint coating adding a second barrier above the metallic coating
• Top coating of 25±5 μm for visible side coverage
• Back coating of 7±2 μm for standard reverse-side protection
• Soft commercial quality or LFQ for bending, profiling, and roll forming

For roofing and cladding production, the service result depends on substrate type, paint system, film thickness, and forming radius. PPGI is commonly used for general building panels, while PPGL can be specified when the project requires an aluminum-zinc coated base metal.

3. Specifications

4. Application

• Roofing sheets for workshops, warehouses, and light steel buildings
• Wall cladding and facade panels
• Home appliance outer panels
• Container and light enclosure sheet parts
• Decorative and functional building sheets
• General roll formed construction profiles

5. Processing

• Cut-to-length sheet production
• Slitting into narrow strips
• Roll forming into roofing and wall profiles
• Bending and folding
• Custom cutting according to project size
• Protective film application when required

6. Advantages

• 700–1250 mm width range fits mainstream roofing and cladding lines
• 0.2–1.0 mm thickness range covers common prepainted panel applications
• Top coating of 25±5 μm is suitable for visible construction surfaces
• PPGI and PPGL options allow substrate selection by project requirement
• CGCC and DX51D grades support common forming and panel processing
• RAL color customization helps match project appearance requirements

7. How to Choose

• General roofing and wall panels → PPGI is commonly selected
• Projects requiring galvalume base metal → PPGL should be specified in advance
• Standard outdoor use → PE is commonly used
• Higher weather resistance requirement → SMP or PVDF is usually preferred
• More rigid panel requirement → choose higher thickness within the 0.2–1.0 mm range
• Visible architectural use → confirm color, gloss, paint thickness, and protective film requirement before order

8. FAQ

Q1: Is this product PPGI or PPGL?
This specification covers both PPGI and PPGL. PPGI uses a galvanized steel substrate, while PPGL uses a galvalume steel substrate.

Q2: What does top 25±5 μm and back 7±2 μm mean?
It refers to the nominal paint film thickness on the exposed side and reverse side, which affects surface coverage and coating durability.

Q3: Can this coil be used for roofing sheet production?
Yes. It is commonly used for roll formed roofing sheets and wall cladding profiles.

Q4: What is LFQ in prepainted steel coil?
LFQ means lock forming quality, which is used when better forming performance is required in profiling and sheet fabrication.

Q5: Can the coil be supplied in customized colors?
Yes. Colors can be produced according to the RAL color card or customer-approved samples.