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| Property | Parameter | Description |
|---|---|---|
| Product Name | Prefab Container Color Steel Sheet | Pre-painted galvanized/galvalume steel sheet for prefabricated container structures |
| Material Grade | DX51D+Z / DX52D+AZ / SGCC / Q235 | International equivalents: ASTM A653 CS / EN 10346 DX51D / JIS G3302 SGCC |
| Standard Compliance | GB/T 12754, EN 10169, ASTM A755 | Pre-painted steel coil standards; base metal per GB/T 2518 / EN 10346 |
| Chemical Composition | C ≤0.12%, Mn ≤0.60%, P ≤0.045%, S ≤0.045%, Si ≤0.50% | Based on DX51D substrate; Zn coating: 99.7% pure zinc |
| Tensile Strength | 270–500 MPa | Per GB/T 12754 / EN 10169; varies by grade and temper |
| Yield Strength | 140–420 MPa | DX51D: ≥140 MPa; higher grades available for structural panels |
| Elongation | ≥22% (A80mm) | Ensures formability for roll-forming and bending in panel fabrication |
| Base Metal Thickness | 0.3 mm – 1.2 mm | Common container panel thickness: 0.4 mm, 0.5 mm, 0.6 mm |
| Width | 600 mm – 1250 mm | Standard coil width; custom slit widths available |
| Coating Type | Galvanized (Z80–Z275 g/m²) / Galvalume (AZ50–AZ150 g/m²) | Hot-dip zinc or zinc-aluminum alloy coating for corrosion resistance |
| Paint Coating | Top coat: 15–25 μm (PVDF/PE/SMP); Primer: 5–7 μm; Back coat: 7–10 μm | PVDF offers superior UV and weather resistance; PE suitable for standard use |
| Surface Finish | Smooth / Embossed / Corrugated / Ribbed | Various profiles for wall panels, roof panels, and floor panels of container buildings |
| Color Options | RAL standard colors; custom colors available | Common: RAL 9002 White, RAL 5015 Blue, RAL 6005 Green, RAL 3009 Red |
| Application | Prefab container houses, modular buildings, mobile offices, site cabins, cold storage panels | Used as wall cladding, roofing sheets, and sandwich panel facings |
| Certification | ISO 9001, CE, SGS, BV | Quality management and product conformity certifications |
| Packaging | Steel coil on wooden pallet; eye-to-sky or eye-to-wall; waterproof paper + steel strip strapping | Coil weight: 3–8 MT; suitable for sea and land transport |
| MOQ | 25 MT per order | Mixed specifications accepted; full container load (FCL) preferred |
Initial Coating Inconsistency Resolved Promptly
Our first shipment of 4,800 m² (0.4 mm, RAL 6018 green) showed gloss variation between coils — some panels measured 38 GU and others 55 GU at 60° geometry, outside our 40–50 GU spec. I raised the issue and the QC team responded within 24 hours, provided a root-cause report, and arranged a replacement batch at no additional cost within 15 days. The replacement was fully within spec and passed our in-house cross-hatch adhesion test. Issue resolved, and I appreciate the accountability. Upgrading to 4 stars on next order if consistency holds.
Our first shipment of 4,800 m² (0.4 mm, RAL 6018 green) showed gloss variation between coils — some panels measured 38 GU and others 55 GU at 60° geometry, outside our 40–50 GU spec. I raised the issue and the QC team responded within 24 hours, provided a root-cause report, and arranged a replacement batch at no additional cost within 15 days. The replacement was fully within spec and passed our in-house cross-hatch adhesion test. Issue resolved, and I appreciate the accountability. Upgrading to 4 stars on next order if consistency holds.
