Rectangular Color Coated Steel Sheet - Mill Direct
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 Rectangular Color Coated Steel Sheet
| Property | Parameter | Description |
|---|---|---|
| Product Name | Rectangular Color Coated Steel Sheet | Pre-painted galvanized/galvalume steel sheet with rectangular form factor |
| Material Grade | TDC51D, TDC52D, TS280GD, TS350GD (EN); CGCC, CGCD (JIS G3312); Q/BQB 440 (GB) | International equivalents: DX51D+Z (EN 10346), SGCC (JIS), Grade 33/37/40 (ASTM A755) |
| Standard Compliance | ASTM A755/A755M, EN 10169, JIS G3312, GB/T 12754 | Covers mechanical properties, coating adhesion, and color uniformity requirements |
| Chemical Composition | C ≤ 0.12%, Mn ≤ 0.60%, P ≤ 0.045%, S ≤ 0.045%, Si ≤ 0.50% | Base metal composition per EN 10346 / GB/T 2518; substrate: hot-dip galvanized or galvalume |
| Tensile Strength | 270–560 MPa | Varies by grade; e.g., TDC51D: ≥270 MPa, TS350GD: ≥350 MPa (EN 10169) |
| Yield Strength | 140–420 MPa | TDC51D: ≥140 MPa; TS280GD: ≥280 MPa; TS350GD: ≥350 MPa |
| Elongation | ≥16%–28% | Measured at A80; higher elongation grades suitable for deep drawing and forming |
| Thickness Range | 0.14–1.50 mm (base metal); total: 0.18–1.60 mm | Includes primer + topcoat; tolerance per EN 10143 or GB/T 708 |
| Width Range | 600–1,500 mm | Standard widths: 750 mm, 900 mm, 1,000 mm, 1,200 mm, 1,250 mm |
| Length Range | 1,000–6,000 mm (customizable) | Rectangular sheets cut to length; tolerance ±5 mm standard |
| Coating Type | Zinc (Z100–Z275 g/m²) or Zinc-Aluminum (AZ50–AZ150 g/m²) | Hot-dip galvanized (GI) or Galvalume (GL/Aluzinc) substrate per EN 10346 |
| Paint System | Polyester (PE), High Durability Polyester (HDP), PVDF, SMP | Topcoat: 15–25 μm; primer: 5–7 μm; back coat: 7–12 μm; RAL/custom colors available |
| Surface Finish | Smooth, embossed, matte, or high-gloss | Color uniformity per EN 10169 Class A; pencil hardness ≥ 2H; T-bend ≤ 2T |
| Application | Roofing, wall cladding, home appliances, garage doors, HVAC panels, interior decoration | Widely used in construction, automotive interiors, and household appliance manufacturing |
| Certification | ISO 9001, CE Marking, SGS, BV, RoHS Compliant | Third-party inspection available; mill test certificate (MTC) per EN 10204 3.1 |
| Packaging | Wooden pallet or steel pallet; waterproof paper + steel strip bundling | Export seaworthy packaging; each bundle ≤ 3,000 kg; edge protectors included |
| MOQ | 5 Metric Tons per color/specification | Mixed specifications accepted; lead time 7–20 business days depending on order volume |
Rectangular Color Coated Steel Sheet - Mill Direct
Rectangular color coated steel sheet is one of the most versatile and in-demand building materials in the global construction and manufacturing sectors today. Produced by applying a continuous organic coating system onto cold-rolled or hot-dip galvanized steel substrates, these sheets deliver a compelling combination of structural integrity, weather resistance, and visual appeal. Architects, contractors, and industrial fabricators rely on these panels for roofing, wall cladding, interior partitions, appliance housings, and transportation equipment. The rectangular format offers dimensional consistency that simplifies cutting, forming, and installation, reducing labor time on-site. With mill-direct supply, buyers gain access to tighter quality control, shorter lead times, and cost-effective pricing that bypasses unnecessary intermediaries. Whether your project demands a matte finish in a neutral tone or a high-gloss polyester coating in a custom RAL color, mill-direct rectangular color coated steel sheets provide the flexibility and reliability that modern projects require at every scale.
What is Rectangular Color Coated Steel Sheet?
Rectangular color coated steel sheet refers to a flat-rolled steel product with a precisely cut rectangular geometry that has undergone a multi-layer organic coating process. The base material is typically hot-dip galvanized (SGCC/DX51D) or galvalume steel, onto which a primer coat and a topcoat — commonly polyester (PE), high-durability polyester (HDP), polyvinylidene fluoride (PVDF), or silicon-modified polyester (SMP) — are thermally cured. The result is a corrosion-resistant, aesthetically finished panel ready for direct fabrication or installation.

Rectangular Color Coated Steel Sheet Manufacturing Process
Production begins with uncoiling and surface cleaning of the steel substrate, followed by chemical passivation to enhance coating adhesion. A primer layer of 5–8 µm is applied via roller coating and cured in a thermal oven at approximately 230°C. The topcoat — ranging from 15 µm to 25 µm depending on the specified coating type — is then applied and cured under controlled temperature profiles. After cooling, the finished coil is precision-slitted and sheared to exact rectangular dimensions, inspected for surface defects, and packaged for dispatch.
Rectangular Color Coated Steel Sheet Technical Specifications
Standard rectangular color coated steel sheets conform to GB/T 12754, JIS G3312, and ASTM A755 specifications. Typical parameters include base steel thickness from 0.18 mm to 1.50 mm, sheet width up to 1,500 mm, and custom lengths per order. Yield strength ranges from 220 MPa to 550 MPa depending on grade selection. Coating mass on the galvanized substrate reaches Z80–Z275 g/m², while topcoat dry film thickness is maintained at 20 µm ± 2 µm. Salt spray resistance exceeds 500 hours per ASTM B117, and pencil hardness tests at HB to 2H. Available colors span the full RAL and NCS palette, with gloss levels from 10 GU (matte) to 85 GU (high gloss) measured at 60°.
Get a Competitive Quote for Rectangular Color Coated Steel Sheet
Partner with our mill-direct team to secure cost-effective pricing on rectangular color coated steel sheet for your next project. We support buyers across construction, appliance manufacturing, and logistics with fast sampling, flexible MOQs, and reliable on-time delivery to ports worldwide. Reach out now to discuss your specifications.
- 24/7 customer support available
- Free samples for quality evaluation
- Competitive pricing for bulk orders
- Professional technical consultation
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