Pre Painted Steel Coil with Back Coating Thickness 5-7μm Coil ID 508/610mm and Coil Weight 3-8MT
Color Coated PPGI Steel Coil with 30–275g/m² Zinc Coating for Roofing Wall Panels and Appliance Housing
１．Product Overview
Pre Painted Steel Coil is a color coated steel material designed for construction panels, appliance housing, automotive components, and industrial fabrication. The product combines galvanized steel substrate protection with pre-painted surface treatment to improve corrosion resistance, coating durability, and appearance consistency.
The coil is suitable for roofing systems, wall cladding panels, ventilation equipment, and decorative metal fabrication where stable coating performance and color retention are required.
２．Technical Solution
The steel substrate is processed through zinc coating and continuous color coating production lines. The zinc coating layer provides corrosion resistance, while the paint system improves surface durability, UV resistance, and weather stability.
The 10–25μm top coating improves outdoor exposure performance and surface appearance. The 5–7μm back coating improves reverse-side protection during storage, roll forming, and installation.
PE coating is commonly used for general indoor and commercial applications. SMP and HDP coatings improve weather resistance for outdoor building systems. PVDF coating is suitable for long-term outdoor exposure and industrial environments requiring higher UV and corrosion resistance.
３．Specifications
| Parameter | Value |
|---|---|
| Product Name | Pre Painted Steel Coil |
| Product Type | PPGI Coil / Color Coated Steel Coil |
| Width | 700–1250mm |
| Coil Weight | 3–8MT |
| Coil ID | 508 / 610mm |
| Zinc Coating | 30–275g/m² |
| Top Coating Thickness | 10–25μm |
| Back Coating Thickness | 5–7μm |
| Paint Coating | PE / SMP / HDP / PVDF |
| Color System | RAL Color System |
| Surface Treatment | Pre-painted |
４．Application
- Roofing sheets
- Wall cladding systems
- Ceiling panels
- HVAC duct panels
- Home appliance housing
- Automotive interior panels
- Electrical cabinets
- Furniture fabrication
- Decorative metal panels
- Industrial equipment covers
５．Processing
- Roll forming
- Slitting
- Cut-to-length processing
- Bending
- Stamping
- Profiling
- Protective film application
- Panel fabrication
６．Advantages
- 30–275g/m² zinc coating improves corrosion resistance for indoor and outdoor applications.
- 10–25μm top coating improves coating durability and weather resistance.
- 5–7μm back coating improves reverse-side protection during fabrication and transportation.
- PE, SMP, HDP, and PVDF coating systems support different environmental and service conditions.
- RAL Color System supports stable color consistency for architectural and appliance applications.
- 700–1250mm width range supports multiple production line requirements.
- 508 / 610mm coil ID is compatible with standard decoiling equipment.
７．How to Choose
- For general indoor applications, PE coating is commonly selected.
- For roofing and wall cladding systems, SMP or HDP coating improves weather resistance and color retention.
- For coastal or industrial outdoor environments, PVDF coating is recommended.
- Higher zinc coating levels are suitable for humid and corrosive operating conditions.
- Confirm width, coil weight, and coil ID according to forming equipment and processing capacity.
８．FAQ
Q1．What is the zinc coating range
The zinc coating range is 30–275g/m².
Q2．What paint coating systems are available
PE, SMP, HDP, and PVDF coating systems are available.
Q3．What is the top coating thickness
The top coating thickness is 10–25μm.
Q4．What is the back coating thickness
The back coating thickness is 5–7μm.
Q5．What coil IDs are available
508mm and 610mm coil IDs are available.
Q6．What industries use this product
The product is commonly used in construction, appliances, automotive panels, HVAC systems, furniture, and industrial fabrication.
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