Color Coated Galvanized Steel Coil - Hot-Dipped Z275 Z600 for Construction & Appliances

Technical Specifications of Color Coated Galvanized Steel Coil

Color Coated Galvanized Steel Coil - Hot-Dipped Z275 Z600 for Construction & Appliances

Color coated galvanized steel coil represents a premium-grade flat-rolled steel product that combines the corrosion resistance of zinc coating with the aesthetic versatility of organic paint layers. Manufactured through a continuous hot-dip galvanizing process followed by precision color coating, this material serves critical roles in architectural cladding, roofing systems, household appliances, and industrial enclosures. Engineered for customers demanding both structural durability and visual appeal, these coils deliver exceptional performance in environments requiring weather resistance, formability, and long-term color retention.

What is Color Coated Galvanized Steel Coil?

Color coated galvanized steel coil is a pre-painted steel product featuring a hot-dipped zinc coating (typically Z275 or Z600 grade per ASTM A653) as the metallic substrate, topped with chromate conversion treatment and multiple organic coating layers. The zinc coating provides sacrificial corrosion protection, while the topcoat system—commonly polyester, silicon-modified polyester (SMP), or polyvinylidene fluoride (PVDF)—delivers UV stability, chemical resistance, and decorative finish. Standard dimensions range from 0.35mm to 1.2mm thickness with coil widths of 914mm to 1250mm.

Color Coated Galvanized Steel Coil Technical Specifications

Base material conforms to ASTM A653/A653M structural quality with minimum yield strength of 275 MPa for Grade 50. Zinc coating weight meets Z275 (275 g/m² total both sides) or Z600 specification per ASTM A924. Organic coating thickness ranges from 15-25 microns topcoat with 5-8 microns backing, applied via roller coating technology. Color options include RAL/Pantone standards with ΔE color difference ≤2.0 per batch. Pencil hardness achieves ≥HB grade per ASTM D3363, while T-bend test demonstrates 0T to 2T formability depending on coating system.

Why Choose Our Color Coated Galvanized Steel Coil

Our manufacturing facility operates a state-of-the-art continuous galvanizing line with integrated color coating section, ensuring superior coating adhesion through chromate-free pretreatment systems. We maintain ISO 9001:2015 certification and conduct real-time quality monitoring including zinc layer thickness measurement via X-ray fluorescence and coating weight verification per ASTM A924 Annex A1. Mill-direct pricing eliminates intermediary costs while our technical team provides customized solutions for project-specific requirements including special colors, embossed textures, and anti-fingerprint treatments.

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

Standard MOQ is 25 metric tons per specification, equivalent to approximately one full container load. For established clients with ongoing requirements, we offer flexible MOQ of 10 tons with consolidated shipping arrangements. Custom color orders require 50-ton minimum due to coating line setup requirements and color matching protocols.

Do you provide material test certificates?

Yes, each shipment includes EN 10204 Type 3.1 mill test certificates documenting chemical composition per ASTM E1019, mechanical properties per ASTM A370, zinc coating weight per ASTM A90, and coating thickness verification. Additional testing reports available upon request include salt spray resistance per ASTM B117 (minimum 500 hours), adhesion testing per ASTM D3359, and color measurement per ASTM D2244.

What is the typical delivery time?

Standard color inventory in high-demand RAL shades ships within 15-20 days from deposit confirmation. Custom color orders require 30-35 days production lead time to accommodate color matching, trial coating runs, and quality approval procedures. Express production available for urgent projects with 10-day expedited processing upon request, subject to production schedule availability and premium charges.

Can you cut to custom sizes?

Our precision slitting line accommodates custom widths from 100mm to 1250mm with tolerance of ±2mm per ASTM A924. Cut-to-length service provides sheets from 1000mm to 6000mm length with squareness tolerance ≤3mm per 1000mm. Edge trimming options include mill edge, slit edge, or deburred edge depending on application requirements. Minimum processing quantity applies for non-standard dimensions.

Get a Competitive Quote for Color Coated Galvanized Steel Coil

Contact our technical sales team today to receive factory-competitive pricing tailored to your project specifications. We provide comprehensive support including material selection guidance, coating system recommendations, and logistics coordination for international shipments. Request your detailed quotation with complete technical documentation and delivery timeline by reaching out through our online inquiry form or direct phone consultation with our metallurgical specialists.