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| Property | Parameter | Description |
|---|---|---|
| Product Name | Engineering Building Color Steel Sheet | Pre-painted galvanized/galvalume steel sheet for structural and architectural applications |
| Material Grade | DX51D, DX52D, S280GD, S350GD | Equivalent to ASTM A755, JIS G3312, EN 10346 substrate grades |
| Standard Compliance | GB/T 12754, EN 10169, ASTM A755/A755M, JIS G3312 | Meets international pre-painted steel coil and sheet standards |
| Base Metal Coating | Galvanized (Z60–Z275 g/m²), Galvalume (AZ50–AZ150 g/m²) | Hot-dip zinc or zinc-aluminum alloy coating for corrosion resistance |
| Chemical Composition | C ≤0.12%, Mn ≤0.60%, P ≤0.045%, S ≤0.045%, Si ≤0.50% | Low-carbon steel substrate ensuring formability and weldability |
| Tensile Strength | 270–560 MPa | Per EN 10346 / GB/T 12754; varies by grade (e.g., S280GD: ≥360 MPa) |
| Yield Strength | 220–420 MPa | S280GD: ≥280 MPa; S350GD: ≥350 MPa per EN 10346 |
| Elongation | ≥16% (A80mm) | Ensures good bending and roll-forming performance |
| Paint System | Top coat: 15–25 µm; Primer: 5–7 µm; Back coat: 7–12 µm | Polyester (PE), PVDF, SMP, HDP coating options available |
| Thickness Range | 0.30 mm – 1.50 mm | Total thickness including base metal and paint layers |
| Width Range | 600 mm – 1,250 mm | Custom slit widths available upon request |
| Length / Coil Weight | Coil: 3–10 MT; Sheet: 1,000–6,000 mm | Supplied as coils or cut-to-length sheets per customer specification |
| Surface Finish | Smooth, embossed, matte, high-gloss | RAL color customization available; uniform paint adhesion and gloss |
| Application | Roof panels, wall cladding, sandwich panels, purlins, industrial buildings | Widely used in warehouses, factories, commercial and agricultural structures |
| Certification | ISO 9001, CE Marking, SGS, BV | Third-party inspection and mill test certificates (MTC) available |
| Packaging | Eye-to-sky or eye-to-wall coils; wooden pallet for sheets | Waterproof paper + steel strip bundling; seaworthy export packaging |
| MOQ | 25 MT per order | Mixed specifications accepted; OEM/ODM color and size orders supported |
Initial width tolerance issue flagged and resolved efficiently
First order of 30 tonnes — 0.45 mm PE-coated, Z120 galvanized, 1,200 mm effective width for wall cladding panels. On inspection, approximately 8% of coils measured 1,195 mm, outside the ±0.02 mm tolerance stated in the GB/T 12754 spec sheet. Raised the issue with the technical team; they responded within 4 hours, issued a non-conformance report, and arranged priority replacement coils that arrived 10 days later. Coating quality and salt spray results on the replacement stock were fine. Issue resolved professionally — cautiously optimistic about the next order.
First order of 30 tonnes — 0.45 mm PE-coated, Z120 galvanized, 1,200 mm effective width for wall cladding panels. On inspection, approximately 8% of coils measured 1,195 mm, outside the ±0.02 mm tolerance stated in the GB/T 12754 spec sheet. Raised the issue with the technical team; they responded within 4 hours, issued a non-conformance report, and arranged priority replacement coils that arrived 10 days later. Coating quality and salt spray results on the replacement stock were fine. Issue resolved professionally — cautiously optimistic about the next order.
