700–1250mm Pre-painted Steel Coil with 30–275g/m² Zinc Coating and 3–8MT Coil Weight for Roofing and Industrial Applications
700–1250mm Pre-painted Steel Coil with 30–275g/m² Zinc Coating and 3–8MT Coil Weight for Roofing and Industrial Applications
１．Product Overview
Pre-painted steel coil is a color coated steel material produced through continuous coating and curing technology on galvanized steel substrate. The product combines decorative appearance, corrosion resistance, and stable processing performance for roofing systems, wall panels, industrial buildings, and appliance manufacturing.
With zinc coating from 30–275 g/m² and coil weight from 3–8 MT, the product supports continuous industrial processing and outdoor service applications requiring stable coating durability.
２．Technical Solution
The product adopts galvanized substrate combined with chemical pretreatment, primer coating, top coating, curing treatment, and back coating processing.
Top coating thickness of 10–25 μm improves weather resistance, UV protection, color retention, and surface durability. Back coating thickness of 5–7 μm improves reverse-side protection during storage, transportation, and installation.
PE, SMP, HDP, and PVDF coating systems support different environmental conditions including standard construction, industrial atmosphere, and coastal applications.
３．Specifications
| Parameter | Value |
|---|---|
| Product Type | Pre-painted Steel Coil |
| Width | 700–1250 mm |
| Zinc Coating | 30–275 g/m² |
| Top Coating Thickness | 10–25 μm |
| Back Coating Thickness | 5–7 μm |
| Paint Coating | PE / SMP / HDP / PVDF |
| Coil Weight | 3–8 MT |
| Coil ID | 508 mm / 610 mm |
| Color System | RAL Color System |
| Surface Treatment | Pre-painted |
| Application | Roofing / Wall Panels / Appliances / Construction |
４．Application
- Roofing sheet production
- Wall cladding systems
- Architectural façade panels
- Industrial building panels
- Home appliance outer shells
- Decorative metal processing
- Automotive decorative components
- Electrical cabinet fabrication
- Furniture panel manufacturing
- Industrial enclosure production
５．Processing
- Roll forming and profiling
- Cut-to-length sheet production
- Slitting into narrow strips
- Bending and punching
- Roofing panel fabrication
- Protective film lamination
- Industrial stamping
- Decorative panel forming
６．Advantages
- 30–275 g/m² zinc coating improves corrosion resistance for outdoor and industrial applications.
- 10–25 μm top coating improves weather durability and surface stability.
- RAL color system supports stable architectural color consistency.
- PE, SMP, HDP, and PVDF coatings support different environmental and service-life requirements.
- 3–8 MT coil weight supports continuous industrial processing efficiency.
- 700–1250 mm width range supports roofing, wall panel, and appliance production compatibility.
７．How to Choose
- For standard indoor applications, choose PE coating.
- For industrial outdoor environments, select SMP or HDP coating.
- For coastal and high UV exposure conditions, select PVDF coating with higher zinc coating levels.
- For roofing and wall panel production, confirm width compatibility with forming equipment.
- For automated production lines, confirm coil weight and coil ID requirements.
８．FAQ
Q1: What zinc coating range is available?
The zinc coating range is 30–275 g/m².
Q2: What paint coating systems are available?
PE, SMP, HDP, and PVDF coating systems are available.
Q3: What top coating thickness is available?
The top coating thickness range is 10–25 μm.
Q4: What coil IDs are supported?
508 mm and 610 mm coil IDs are available.
Q5: What industries commonly use this product?
Construction, appliances, automotive, roofing, and industrial fabrication industries commonly use this product.
Q6: What color system is used?
The product uses the RAL Color System for standardized color control and customization.
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