1250mm Prepainted Color Steel Coil with PE / SMP / HDP / PVDF Coating and 10–25μm Top Paint for Roofing and Panel Applications

1250mm Prepainted Color Steel Coil with PE / SMP / HDP / PVDF Coating and 10–25μm Top Paint for Roofing and Panel Applications

1.Product Overview

Prepainted color steel coil is used in roofing sheets, wall panels, household appliance housings, decorative panels, and general building products that require both surface appearance and corrosion protection. Compared with bare metallic substrate, the painted system adds an additional barrier layer on top of the coated steel, which helps improve surface durability and color consistency in service.

This product range covers 0.11–1.2 mm thickness and 700–1250 mm width, which is suitable for roll forming, cut-to-length production, panel pressing, and light fabricated construction parts. Different paint systems are available for different weather exposure levels and end-use requirements.

2.Technical Solution

Product performance is based on:

• Coated steel substrate providing basic corrosion protection
• Organic top coating adding barrier protection and decorative finish
• Multiple paint systems for different outdoor and industrial environments
• Controlled top and back paint thickness for balanced surface performance
• Mechanical properties suitable for bending, forming, and panel fabrication

For prepainted steel coils, actual service performance depends on coating system, paint thickness, forming radius, and service environment. PE is commonly used for general applications, while SMP, HDP, and PVDF are more suitable where higher weather resistance is required.

3.Specifications

4.Application

• Roofing sheets and roof accessories
• Wall cladding and facade panels
• Sandwich panel outer skins
• Household appliance outer shells
• Decorative metal panels
• Light industrial and commercial building panels

5.Processing

• Cut-to-length sheet production
• Slitting into narrower strips
• Roll forming for roofing and wall profiles
• Bending and folding
• Panel pressing and edge forming
• On-site installation after screw fixing or concealed fastening design

6.Advantages

• 0.11–1.2 mm thickness range suits lightweight panel and profile production
• 700–1250 mm width range fits mainstream construction and panel lines
• Top coating thickness up to 25 μm supports better surface coverage
• Multiple coating systems allow selection by climate and project requirement
• RAL color options support building and appliance color matching
• Mechanical properties support common forming and roll profiling operations

7.How to Choose

• General indoor or mild outdoor use → PE is commonly selected
• Higher weather resistance requirement → SMP or HDP is often preferred
• Long-term exterior exposure and stronger UV resistance → PVDF is commonly used
• More demanding appearance requirement → choose higher top paint thickness such as 20–25 μm
• Roll forming applications → confirm thickness, width, coil ID, and forming radius with equipment capacity

8.FAQ

Q1: What is the difference between PE, SMP, HDP, and PVDF?
They are different paint systems. In general, PE is used for standard applications, while SMP, HDP, and PVDF are selected when stronger weather resistance is required.

Q2: Is 25 μm top coating better than 10 μm?
A thicker top coating generally provides better surface coverage and can improve coating durability, but the final selection should match the service environment and cost target.

Q3: Can this coil be roll formed into roofing or wall sheets?
Yes, prepainted color steel coil is commonly used for roll formed roofing sheets, wall cladding, and sandwich panel skins.

Q4: What coil size is suitable for standard processing equipment?
Coil IDs of 508 mm and 610 mm and coil weights of 3–8 MT are commonly used in decoiling and roll forming lines.

Q5: Which applications need higher weather-resistant coating systems?
Projects with strong sunlight, rain exposure, or longer exterior service life usually require SMP, HDP, or PVDF rather than standard PE.