Prefab House Color Steel Sheet - Factory Price Supplier
Supplier's customization ability
- Drawing-based customization
- Sample-based customization
- Full customization
Minimum order quantity: 1 ton
Shipping total: To be negotiated
- Lead time:
- confirmed with the quotation
- Packaging:
- standard export packing
- Samples:
- available on request
Product details
Technical Specifications of Prefab House Color Steel Sheet
| Property | Parameter | Description |
|---|---|---|
| Product Name | Prefab House Color Steel Sheet | Pre-painted galvanized/galvalume steel sheet for prefabricated building panels |
| Material Grade | DX51D, S280GD, S350GD / SGCC, SGCH | International equivalents: DX51D+Z (EN), SGCC (JIS G3302), CS Type B (ASTM A653) |
| Standard Compliance | EN 10346, JIS G3302, ASTM A653, GB/T 12754 | Meets international standards for hot-dip zinc-coated and pre-painted steel coils |
| Chemical Composition (C) | ≤ 0.12% | Low carbon content ensures good formability and weldability |
| Chemical Composition (Mn) | ≤ 0.60% | Manganese content for structural strength |
| Chemical Composition (P/S) | P ≤ 0.045%, S ≤ 0.045% | Controlled phosphorus and sulfur for improved ductility |
| Tensile Strength | 270–560 MPa | Varies by grade; S280GD: ≥ 360 MPa, S350GD: ≥ 420 MPa (per EN 10346) |
| Yield Strength | 280–420 MPa | S280GD: ≥ 280 MPa; S350GD: ≥ 350 MPa; suitable for structural panel applications |
| Elongation | ≥ 16–20% | Minimum elongation at fracture (A80mm) ensuring panel formability |
| Zinc Coating Weight | Z60–Z275 g/m² (AZ50–AZ150 for Galvalume) | Double-side coating; heavier coating for enhanced corrosion resistance in outdoor use |
| Thickness Range | 0.3–1.2 mm | Common prefab panel thickness: 0.4 mm, 0.5 mm, 0.6 mm; custom available |
| Width Range | 600–1250 mm | Standard coil width; slit-to-width service available per project requirement |
| Surface Finish | PVDF / PE / SMP coating, 2-coat or 3-coat system | Top coat 20–25 μm; primer 5–7 μm; RAL color customizable; gloss level 10–80% |
| Application | Prefab house wall panels, roof panels, sandwich panels, modular buildings | Widely used in residential, industrial, commercial prefabricated structures |
| Certification | ISO 9001, CE Marking, SGS, BV | Third-party inspection available; RoHS compliant coating options |
| Packaging | Steel coil on wooden pallet, eye-to-sky or eye-to-wall, waterproof paper wrapped | Coil weight: 3–8 MT; inner diameter: 508 mm or 610 mm |
| MOQ | 25 MT per order | Mixed colors and specifications accepted above MOQ; sample available upon request |
Prefab House Color Steel Sheet - Factory Price Supplier
Prefab house color steel sheet serves as one of the most essential structural and cladding materials in modern modular and prefabricated construction. As global demand for rapid, cost-effective building solutions continues to rise, this versatile material has become the preferred choice for contractors, developers, and project managers across residential, commercial, and industrial sectors. Engineered to deliver superior weather resistance, thermal efficiency, and aesthetic flexibility, prefab house color steel sheet combines a high-strength cold-rolled steel substrate with a multi-layer protective coating system — typically including a zinc or Galvalume base coat, a chemical conversion layer, a primer, and a durable polyester or PVDF topcoat. The result is a lightweight yet structurally robust panel that dramatically reduces on-site construction time while maintaining long-term performance in demanding environmental conditions. Whether you are building temporary worker accommodations, permanent residential units, warehouse structures, or modular office facilities, this material finds extensive application across virtually every prefab construction scenario worldwide.
What is Prefab House Color Steel Sheet?
Prefab house color steel sheet is a factory-coated flat or profiled steel panel specifically designed for use in prefabricated building envelopes, including walls, roofing, and partition systems. It consists of a cold-rolled or hot-dip galvanized steel base (typically G550 or DX51D grade) bonded with a color-coated polymer finish. The material offers outstanding anti-corrosion properties, UV resistance, and dimensional consistency, making it ideal for rapid-assembly modular structures that require both durability and visual appeal.

Prefab House Color Steel Sheet Manufacturing Process
The manufacturing process begins with high-tensile cold-rolled steel coil, which undergoes continuous hot-dip galvanizing or Galvalume coating to achieve a zinc layer of 60–275 g/m². The strip is then chemically treated and passed through a tandem roll-coating line where primer (5–8 μm) and topcoat (15–25 μm) layers are applied and cured in high-temperature ovens at approximately 230°C. Final profiling or corrugating is performed via precision roll-forming equipment to produce panels with consistent geometry and tight dimensional tolerances, ensuring seamless fit during prefab assembly.
Prefab House Color Steel Sheet Technical Specifications
Our prefab house color steel sheet is available in the following standard parameters: base steel grade DX51D+Z / G550, thickness range 0.30–1.20 mm, width up to 1,250 mm, zinc coating weight 60–275 g/m² per ASTM A653, tensile strength ≥ 550 MPa, yield strength ≥ 500 MPa, and coating system polyester (PE), high-durability polyester (HDP), or PVDF with dry film thickness 18–25 μm. Color options include over 100 RAL and custom shades with a pencil hardness rating of ≥ 2H and T-bend flexibility of 0T–2T. Panels meet ISO 9001, ASTM A755, and EN 10169 quality standards.
Get a Competitive Quote for Prefab House Color Steel Sheet
Partner with our factory to access mill-direct rates on premium prefab house color steel sheet for your next project. We support bulk procurement with flexible MOQ, fast lead times of 7–15 business days, and reliable global logistics. Our technical team is ready to assist with specification matching and custom profiling requirements.
- 24/7 customer support available
- Free samples for quality evaluation
- Competitive pricing for bulk orders
- Professional technical consultation
Contact us today to get your free quote within 24 hours!

