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| Property | Parameter | Description |
|---|---|---|
| Product Name | Industrial Color Coating Processing | Pre-painted / color-coated steel coil and sheet with protective organic coating applied via continuous coil coating line |
| Base Material Grade | DX51D, DX52D, DX53D (EN 10346); SGCC, SGCD (JIS G3302); CS-B, FS-B (ASTM A653) | Hot-dip galvanized, galvalume (55% Al-Zn) or cold-rolled steel substrate; international equivalent grades available |
| Standard Compliance | EN 10169, ASTM A755/A755M, JIS G3312, GB/T 12754 | Covers continuous organic coating on flat-rolled steel; coating adhesion, flexibility and corrosion resistance requirements |
| Chemical Composition (Substrate) | C ≤ 0.12%, Mn ≤ 0.60%, P ≤ 0.045%, S ≤ 0.045%, Si ≤ 0.50% | Typical values for DX51D/SGCC base; exact composition varies by substrate grade and supplier mill certificate |
| Tensile Strength | 270–500 MPa (substrate dependent) | DX51D: 270–500 MPa per EN 10346; SGCC: ≥ 270 MPa per JIS G3302; final value confirmed on mill test report |
| Yield Strength | 140–420 MPa | DX51D: ≤ 300 MPa (soft grade); structural grades (S280GD, S350GD): 280–420 MPa per EN 10346 |
| Elongation | ≥ 22% (A80mm) | DX51D/SGCC general commercial quality; higher elongation grades (DX53D ≥ 30%) available for deep-drawing applications |
| Coating Type | PVDF, SMP, HDP, Polyester (PE), Epoxy, Primer + Finish coat | Top coat + primer system; PVDF offers superior UV and weather resistance; PE is standard economy option |
| Coating Thickness | Top coat: 15–25 µm; Primer: 5–7 µm; Back coat: 5–15 µm | Total dry film thickness measured per ASTM D1400 / EN ISO 2808; custom thickness available on request |
| Zinc / Metallic Coating Mass | Z60–Z275 g/m² (both sides); AZ50–AZ150 g/m² (galvalume) | Per EN 10346 / ASTM A653; heavier zinc coating improves corrosion barrier beneath organic coating |
| Dimension Range | Thickness: 0.20–1.50 mm; Width: 600–1,500 mm; Coil OD: ≤ 2,000 mm; Sheet length: 1,000–6,000 mm | Slit coil and cut-to-length sheet available; tolerance per EN 10143 or ASTM A924/A924M |
| Surface Finish & Color | RAL / Pantone custom color; gloss level 10–85 GU (60°); smooth, embossed or matte finish | Color measured per EN ISO 11664; gloss per EN ISO 2813; pencil hardness ≥ 2H (ASTM D3363) |
| Application | Roofing, wall cladding, garage doors, home appliances, HVAC ducts, automotive interior panels, storage racks | Suitable for construction, white goods and light industrial fabrication requiring decorative and corrosion-resistant surface |
| Certification | ISO 9001:2015, CE Marking (EN 10169), RoHS compliant, SGS / BV third-party inspection available | Mill test certificate (MTC) per EN 10204 3.1 supplied with each shipment; REACH compliance on request |
| Packaging | Coil: steel-banded with moisture-proof paper and wooden pallet; Sheet: wooden pallet with steel strapping | Export seaworthy packaging standard; inner eye protection ring and outer waterproof wrapping included |
| MOQ | 25 MT per color/specification | Mixed colors accepted within one 20' FCL (≈ 25 MT); sample order (≥ 500 kg) negotiable for new customers |
Initial color deviation issue — resolved promptly by technical team
Our first order of 15 tons of HDP-coated coils, 0.40 mm, RAL 5015 color for architectural cladding arrived with a visible color shift on approximately 10% of one coil — ΔE measured around 2.5, outside our ≤1.5 tolerance. I raised it immediately and the technical team responded within 4 hours, arranged replacement coils at no charge, and shipped within 8 days. The replacement batch was fully compliant. Adhesion and DFT on all other coils were correct. Issue appeared to be a batch calibration anomaly. Confidence restored — will trial a second order based on how this was handled.
Our first order of 15 tons of HDP-coated coils, 0.40 mm, RAL 5015 color for architectural cladding arrived with a visible color shift on approximately 10% of one coil — ΔE measured around 2.5, outside our ≤1.5 tolerance. I raised it immediately and the technical team responded within 4 hours, arranged replacement coils at no charge, and shipped within 8 days. The replacement batch was fully compliant. Adhesion and DFT on all other coils were correct. Issue appeared to be a batch calibration anomaly. Confidence restored — will trial a second order based on how this was handled.
