Prepainted steel coil

Baiqu Steel Coil Manufacturing Co., Ltd.

Verified Custom manufacturer · 4 yrs ·

China

Customizable Rock-bottom price

$780 1-49 ton Base price

$745 50-99 ton 4.5% off

$730 ≥100 ton 6.4% off

Price validity: subject to market conditions

Supplier's customization ability

Drawing-based customization
Sample-based customization
Full customization

Quantity

Minimum order quantity: 1 ton

Shipping total: To be negotiated

Subtotal of goods US$ 780.00

Start order request

Payment and delivery

Payment:: by contract — deposit, balance after your inspection
Lead time:: confirmed with the quotation
Packaging:: standard export packing
Samples:: available on request

Product details

Technical Specifications of Prepainted Steel Coil

Property	Parameter	Description
Product Name	Prepainted Steel Coil (PPGI/PPGL)	Color-coated galvanized or galvalume steel coil
Base Material	Cold Rolled / Hot-Dip Galvanized / Galvalume Steel	Multiple substrate options available
Standard Compliance	ASTM A755, EN 10169, JIS G3312, GB/T 12754	Meets major international standards
Substrate Grade	SGCC, DX51D, S250GD, CS Type B	Common structural and forming grades
Zinc Coating Weight	40-275 g/m²	Hot-dip galvanized zinc layer per ASTM A653
Thickness Range	0.12 - 1.2 mm	Total thickness including coating layers
Width Range	600 - 1250 mm	Standard and custom widths available
Coil Weight	3 - 8 tons	Typical coil weight per unit
Top Coat Thickness	15 - 25 μm	Primary color/finish paint layer
Back Coat Thickness	5 - 15 μm	Protective backing paint layer
Paint Type	PE, SMP, HDP, PVDF	Polyester, silicon modified polyester, high durability polyester, polyvinylidene fluoride
Color Options	RAL color chart, custom colors	Wide range per RAL/Pantone system
Pencil Hardness	≥2H (PE) / ≥3H (PVDF)	Surface scratch resistance per ASTM D3363
Gloss Level	10-90% (60° angle)	Matte to high gloss finishes available
Tensile Strength	270 - 550 MPa	Varies by substrate grade
Yield Strength	205 - 380 MPa	Minimum yield strength per grade
Application	Roofing, wall cladding, sandwich panels, appliances	Construction and manufacturing industries
Certification	ISO 9001, EN 10204 3.1, SGS, BV	Quality and inspection certifications
Packaging	Eye-to-sky, waterproof paper, steel strip bundled	Seaworthy export packaging
MOQ	5 tons	Minimum order quantity per color

Prepainted Steel Coil - Factory Direct | Custom Sizes

Prepainted steel coil is a factory-finished flat steel product that combines a cold-rolled or galvanized substrate with multiple layers of protective and decorative coatings applied through a continuous coil coating line. This premium-grade material serves critical roles in construction cladding, roofing systems, appliance manufacturing, and modular building projects, delivering both aesthetic versatility and long-term weather resistance to architects, contractors, and OEM fabricators worldwide.

Prepainted steel coil supplier

What Is Prepainted Steel Coil?

Prepainted steel coil—also referred to as color-coated steel coil or PPGI/PPGL—is produced by applying primer and topcoat layers onto a metallic-coated steel strip in a continuous roller-coating process. The base substrate typically consists of hot-dip galvanized (Z30–Z275) or galvalume (AZ50–AZ150) steel, ensuring outstanding anti-corrosion properties before the paint system is even applied. This factory-controlled process yields uniform film thickness, consistent color accuracy, and superior adhesion compared to post-fabrication painting methods.

Prepainted Steel Coil Technical Specifications

Our color-coated steel coils are manufactured according to EN 10169:2012, ASTM A755/A755M, and JIS G3312 requirements. Key parameters include:

Prepainted steel coil wholesale

Parameter	Range / Value
Base Metal Thickness	0.12 mm – 1.50 mm
Coil Width	600 mm – 1,250 mm
Zinc Coating Weight	Z40 – Z275 (40–275 g/m²)
Topcoat Systems	PE (15–20 µm) / SMP (20–25 µm) / HDP (25–30 µm) / PVDF (25–30 µm)
Pencil Hardness	≥ 2H (PVDF) / ≥ 3H (SMP)
Reverse Impact Resistance	≥ 9 J per ASTM D2794
Color Tolerance	ΔE ≤ 1.5 (CIE Lab)
Coil Inner Diameter	508 mm / 610 mm

Why Choose Our Prepainted Steel Coil

Mill-direct supply — Eliminates intermediary markups with factory-competitive pricing and full traceability from melt to shipment.
RAL / Pantone color matching — Over 200 standard RAL shades in stock; custom color development available within 15 working days.
Flexible coating options — PE, SMP, HDP, and PVDF topcoat systems tailored to coastal, industrial, or UV-intensive environments.
Certified quality assurance — Each coil ships with mill test certificates covering chemical composition, mechanical properties, coating thickness, and adhesion test results per ISO 9001:2015 protocols.

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

The standard MOQ for prepainted steel coil is 25 metric tons per color and specification. Mixed-container orders starting from 10 tons may be arranged for trial shipments upon discussion.

Do you provide material test certificates?

Yes. Every shipment includes EN 10204 Type 3.1 mill test certificates documenting substrate grade, zinc coating weight, paint film thickness, gloss level, and T-bend adhesion results.

What is the typical delivery time?

Stock colors in standard gauges ship within 10–15 days. Custom color-coated coils require 25–35 days depending on coating system and order volume.

Can you cut to custom sizes?

Absolutely. We offer slitting to widths as narrow as 20 mm and cut-to-length sheeting up to 6,000 mm, with protective PE film applied to prevent surface scratches during transit and fabrication.

Get a Competitive Quote for Prepainted Steel Coil

Ready to source premium-grade color-coated steel coil at mill-direct rates? Share your required thickness, width, coating type, RAL color, and annual volume, and our technical sales team will deliver a detailed quotation with the most cost-effective shipping solution within 24 hours. Contact us today to start your project.

Prepainted steel coil China

Ratings & Reviews

4.5

Based on 8 reviews

5 5

4 2

3 1

2 0

1 0

Robert Brown

United Kingdom

2025-02-27

Acceptable Quality Prepainted Coil — Color Variance Issue Resolved

Ordered 35 tons of SMP prepainted coil, 0.55mm, 1,100mm width, RAL 8017 for industrial cladding panels. On inspection, two coils from the batch showed a visible color shift compared to the remaining eight — ΔE measured at approximately 2.1, outside the ≤1.5 tolerance spec. Raised the issue with the technical team immediately; they acknowledged the variance, provided a revised mill report, and arranged replacement coils within 18 days along with partial credit on the affected material. The replacement coils measured ΔE at 1.0. Mechanical properties and zinc coating weight on all coils were within spec throughout. Issue handling was professional, which is why we will consider reordering, but stricter batch QC before shipment would prevent this situation.

Wei Chen

Singapore

2025-03-21

Excellent Mixed-Container Trial Order — Smooth Process for New Supplier

As a trading company sourcing prepainted coil for Southeast Asian construction clients, we arranged a mixed-container trial order of 10 tons across three specifications: 0.25mm PE in RAL 5015, 0.40mm SMP in RAL 3005, and 0.50mm HDP in RAL 6029. All three coils met EN 10169:2012 on coating thickness and adhesion. The T-bend results on the SMP and HDP grades showed no cracking at 2T, confirming good flexibility for our clients' roll-forming applications. Technical sales team responded to our specification queries within 6 hours and provided quotation within 24 hours as stated. Received full 3.1 mill certificates for all three coils. Will be scaling to full container orders based on this trial result.

Michael Johnson

United States

2025-04-14

Reliable Prepainted Coil Supply — Good Consistency Across Orders

We've placed three orders totaling approximately 90 tons of PE and SMP prepainted coils in various gauges (0.40mm–0.80mm) and widths for our roll-forming line producing agricultural building panels. ASTM A755/A755M compliance is confirmed on every mill certificate. Color consistency across batches for RAL 6020 has been tight — our QC team measured ΔE below 1.2 batch-to-batch. Cut-to-length sheets with PE film protection arrived without surface damage. One order experienced a 4-day delay beyond the quoted 15-day window due to port congestion, but the team communicated proactively. Pricing remains the best we've found for certified mill-direct material in this spec range.