Pre Painted Steel Coil with Back Coating Thickness 5–7μm and 700–1250mm Width for Industrial Applications
Pre Painted Steel Coil with Back Coating Thickness 5–7μm and 700–1250mm Width for Industrial Applications
１．Product Overview
Pre painted steel coil is a color coated steel product manufactured on galvanized or galvalume steel substrate through continuous coil coating technology. The product combines corrosion resistance, decorative appearance, and stable forming performance for industrial fabrication, roofing systems, wall cladding, appliances, and architectural panels.
The combination of zinc coating and paint coating improves weather resistance and coating durability under outdoor and industrial operating conditions.
２．Technical Solution
The steel substrate undergoes surface cleaning, chemical pretreatment, primer coating, top coating, curing, and back coating treatment to improve coating adhesion and corrosion resistance.
The 10–25μm top coating improves UV resistance, color retention, and surface durability, while the 5–7μm back coating protects the reverse side during transportation, storage, and roll forming operations.
PE, SMP, HDP, and PVDF coating systems support different environmental and application requirements.
３．Specifications
| Parameter | Value |
|---|---|
| Product Type | Pre Painted Steel Coil |
| Width | 700–1250mm |
| Coil Weight | 3–8MT |
| Coil ID | 508mm / 610mm |
| Zinc Coating | 30–275g/m² |
| Top Coating Thickness | 10–25μm |
| Back Coating Thickness | 5–7μm |
| Paint Coating | PE / SMP / HDP / PVDF |
| Surface Treatment | Pre-painted |
| Color | RAL Color System |
| Application | Roofing / Wall Panels / Appliances / Industrial Panels |
４．Application
- Roofing sheet manufacturing
- Wall cladding systems
- Architectural façade panels
- Industrial building panels
- Home appliance housings
- Electrical cabinet fabrication
- Furniture panel processing
- Automotive decorative components
- Industrial enclosure systems
- Decorative sheet production
５．Processing
- Roll forming
- Cut-to-length processing
- Slitting
- Bending and stamping
- Protective film lamination
- Panel profiling
- Industrial fabrication
- Coil sheet processing
６．Advantages
- 30–275g/m² zinc coating improves corrosion resistance in outdoor and industrial environments.
- 10–25μm top coating supports long-term color stability and weather durability.
- 5–7μm back coating improves reverse-side protection during storage and processing.
- RAL color system supports stable color consistency for architectural applications.
- 700–1250mm width range supports roofing, appliance, and industrial panel production.
- PE, SMP, HDP, and PVDF coatings support different service environments and UV exposure conditions.
- 508mm and 610mm coil IDs are compatible with standard production equipment.
７．How to Choose
- Choose PE coating for general indoor and commercial applications.
- Choose SMP or HDP coating for outdoor industrial and roofing applications.
- Choose PVDF coating for coastal, high UV, and long-term architectural projects.
- Select zinc coating thickness according to local corrosion exposure conditions.
- Confirm coil width and coil ID compatibility with production equipment before ordering.
８．FAQ
Q1．What zinc coating range is available
The available 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 standard top coating thickness
The standard top coating thickness is 10–25μm.
Q4．What is the standard back coating thickness
The standard back coating thickness is 5–7μm.
Q5．What width range can be supplied
The available width range is 700–1250mm.
Q6．What applications are suitable for this product
It is suitable for roofing systems, wall cladding, appliances, architectural panels, industrial buildings, and decorative fabrication.
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