Product Overview
Colour GI Sheet (PPGI) takes galvanized steel as the base material, with organic coatings roller-coated on the pretreated surface and cured at high temperature. It integrates steel's high strength and the coating's excellent corrosion/weather resistance, with customizable surface colors and gloss. Widely applied in construction, home appliances and light industry for roofing, exterior walls, product shells and more, it is a high-cost-performance metal building and industrial material.
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Grade |
Q235, Q345, SS400, ST37-2, ST52, Q420, Q460, S235JR, S275J |
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Standard |
ASTM, DIN, JIS, BS, GB/T |
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Zinc coating |
30-275g/m2, according to customer's requirement |
| Certificate | JIS, ISO 9001, API , BIS, Gs |
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Tolerance |
±1% |
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Thickness |
0.1-10mm or as required |
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Width |
50cm-2.2m or as required |
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Lenth |
Customized(1-30t/coil) |
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Color |
RAL color customized, or customer's requirements |
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Applications |
House, Bridge, Transmission tower, Ship, Industrial furnace |
Colour GI Sheet Price
Our Colour GI Sheet is priced based on tonnage with a MOQ of 10 tons,The specific quotation is affected by the following factors and can be negotiated for large orders:
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ubstrate specifications: zinc coating thickness, steel sheet thickness and width
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Coating type: PE, SMP, HDP, PVDF and other different coating materials
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Customization requirements: special color matching, surface pattern processing
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Quiet running
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Order quantity: large batch orders enjoy preferential discount policies
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Delivery terms: FOB, CFR, CIF, EXW and other different trade terms
Manufacturing Process
Our Colour GI Sheet is manufactured via an automated continuous line with strict parameter control, the streamlined process is as follows:
- Raw Material Preparation: High-quality galvanized steel coil inspection & selection
- Surface Pretreatment: Degreasing → rinsing → chemical conversion → hot air drying
- Coating & Curing: Precision roller coating of primer and customized top coat (PE/SMP/HDP/PVDF) with high-temperature baking for solidification
- Cooling & Full Inspection: Cooling to room temperature, 12 core indicators testing to eliminate defective products
- Slitting & Coiling: Custom slitting to specified size or coiling as finished products for delivery
Professional Inspection
All tests are conducted strictly in accordance with EN, JIS, ASTM, DIN and GB/T standards, using professional equipment and standardized procedures to ensure superior and stable product quality.
The product has undergone global mainstream standardized testing, including:
• Paint Coating Test
We run full paint coating checks for adhesion, hardness, flexibility and weather resistance in line with recognized global standards.This ensures a tough, long-lasting finish that won't crack, peel or fade even in demanding environments.
• Zinc Coating Test
Our precision testing accurately measures zinc coating weight and uniformity across every sheet.By following strict international specifications, we deliver reliable, long-term corrosion protection you can count on.
• Thickness Test
We perform precise multi-point measurements for the base metal, zinc layer and paint coating.Strict thickness control ensures consistent dimensions and reliable performance for all your fabrication and processing needs.
Our Factory Advantages
As a professional steel manufacturer based in Tianjin, we specialize in color coated and galvanized steel products with sufficient inventory and reliable full‑capacity production.
We operate our own production lines and warehouses to ensure stable supply and fast response for global customers.
Backed by strict quality control, flexible customization, and efficient logistics, we deliver consistent quality and on‑time shipments to support projects worldwide.
Packing and Delivery
Your orders are shipped globally in 20/40ft standard dry containers, with international express available for small-batch shipments.
Every steel coil is professionally packed with anti-slip fixing, shock-absorbing protection and desiccant inserts, fully safeguarded against scratches, rust, collision and deformation during long-haul transport.
We work with reputable international logistics carriers to optimize routes and ensure real-time IoT tracking, so you always know where your cargo is.
We provide complete customs clearance support and full export documentation to meet all cross-border requirements, ensuring your goods arrive on schedule.
FAQs
Q: What coating types are available, and how do I choose?
We offer PE, SMP, HDP and PVDF coatings to match different environments. PE is cost-effective for general use; PVDF delivers superior weather & UV resistance ideal for coastal & industrial projects.
Q : Can you customize colors and specifications?
Yes, we support full customization including any RAL color, zinc coating weight, sheet thickness/width and coil ID/OD. Small-batch customization is also available.
Q : How do you ensure coating quality and durability?
Our sheets pass adhesion, hardness, impact, T-bend and salt spray tests per EN/JIS/ASTM standards. Stable coating thickness and strict baking control prevent peeling, cracking or fading.
Q: What is the typical service life and corrosion resistance?
Combined with a protective zinc layer and premium paint film, our products deliver long-term rust protection. Service life varies by coating and environment, with reliable performance in outdoor and harsh conditions.
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