Pre-Coated Galvanized Steel Roofing Sheets Supplier

Zhonghe Building Materials Co., Ltd.

Verified Custom manufacturer · 3 yrs ·

China

Pre-coated galvanized steel roofing sheets

Customizable Rock-bottom price

$650 1-49 ton Base price

$621 50-99 ton 4.5% off

$607 ≥100 ton 6.6% 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$ 650.00

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 Pre-coated Galvanized Steel Roofing Sheets

Property	Parameter	Description
Product Name	Pre-coated Galvanized Steel Roofing Sheets	Color-coated galvanized steel sheets for roofing applications
Material Grade	DX51D+Z / SGCC / S280GD+Z	Equivalent to ASTM A653 CS Type B / EN 10346 / JIS G3302
Standard Compliance	ASTM A755 / EN 10169 / JIS G3312 / GB/T 12754	Organic-coated flat-rolled steel products for roofing and cladding
Chemical Composition	C ≤ 0.12%, Mn ≤ 0.60%, P ≤ 0.10%, S ≤ 0.045%, Si ≤ 0.50%	Base metal composition per EN 10346 / ASTM A653 requirements
Zinc Coating Mass	Z60 – Z275 (60–275 g/m²)	Hot-dip galvanized coating; both sides combined per EN 10346 / ASTM A653
Top Coat Thickness	Primer: 5–8 µm; Top coat: 15–25 µm (PE/PVDF/SMP)	Polyester (PE), PVDF or SMP coating system; back coat 5–15 µm
Tensile Strength	270–550 MPa	Per EN 10169 / ASTM A755; varies by grade (DX51D: ≥270 MPa, S280GD: ≥360 MPa)
Yield Strength	140–480 MPa	DX51D: ≥140 MPa; S280GD: ≥280 MPa; S350GD: ≥350 MPa per EN 10346
Elongation	≥16% – ≥22%	A80 elongation per EN 10346; varies by grade and thickness
Thickness Range	0.20 – 1.20 mm (base metal)	Total thickness including coating; common roofing: 0.35–0.80 mm
Width Range	600 – 1,250 mm	Slit coil or full-width coil; custom widths available on request
Sheet / Coil Length	Coil: OD up to 1,500 mm; Sheet: 1,000–6,000 mm	Cut-to-length sheets or coils; inner diameter 508/610 mm
Surface Finish	Smooth / Embossed; RAL color range available	Gloss level 10–80 GU; UV-resistant top coat; anti-fingerprint option
Application	Roofing, wall cladding, industrial buildings, warehouses, prefab structures	Suitable for corrugated, trapezoidal, and standing seam roof profiles
Certification	ISO 9001, CE Marking, SGS, BV	Third-party inspection available; RoHS compliant coatings
Packaging	Coils: steel-strapped with waterproof paper & steel outer wrap; Sheets: bundled on wooden pallets	Export seaworthy packaging; moisture-proof inner wrapping
MOQ	5 Metric Tons per specification	Mixed specifications accepted; OEM color and profile available from 25 MT

Pre-Coated Galvanized Steel Roofing Sheets Supplier

Pre-coated galvanized steel roofing sheets represent one of the most dependable and versatile roofing materials available in today's construction market. Engineered with a hot-dip galvanized steel substrate and a factory-applied polymer or polyester paint coating, these sheets deliver a dual-layer defense against corrosion, UV degradation, and harsh weather exposure. The galvanized base layer — typically featuring a zinc coating mass of 60–275 g/m² (Z60–Z275 per EN 10346 or ASTM A653) — forms a sacrificial barrier that actively protects the steel core, while the pre-applied top coat eliminates the need for on-site painting, significantly reducing installation time and lifecycle maintenance costs. Widely adopted across residential housing, commercial warehouses, agricultural buildings, and industrial facilities, these sheets combine structural rigidity with aesthetic flexibility, available in a broad palette of RAL or custom colors. As a trusted mill-direct supplier, we provide certified pre-coated galvanized steel roofing sheets tailored to your project specifications and volume requirements.

What is Pre-Coated Galvanized Steel Roofing Sheets?

Pre-coated galvanized steel roofing sheets — also referred to as PPGI (Pre-Painted Galvanized Iron) roofing sheets — are cold-rolled steel coils that undergo hot-dip galvanizing followed by a continuous coil-coating process, applying primer and finish paint layers before profiling into corrugated, trapezoidal, or standing-seam roof panels. The result is a factory-finished roofing product that delivers consistent coating adhesion, color uniformity, and dimensional accuracy across every sheet, meeting international standards including ASTM A755, JIS G3312, and EN 10169.

Pre-Coated Galvanized Steel Roofing Sheets Technical Specifications

Our pre-coated galvanized steel roofing sheets are manufactured to precise tolerances and conform to globally recognized quality benchmarks. Key parameters include:

Pre-coated galvanized steel roofing sheets supplier

Parameter	Specification
Base Material	Hot-dip galvanized steel (SGCC / DX51D+Z)
Thickness	0.12 mm – 1.20 mm (±0.02 mm tolerance)
Width	600 mm – 1,250 mm (customizable)
Zinc Coating Mass	60 – 275 g/m² (Z60–Z275, both sides)
Top Coat Type	Polyester (PE), High-Durability Polyester (HDP), PVDF, SMP
Top Coat Thickness	15 – 25 μm (primer: 5–7 μm; back coat: 7–15 μm)
Tensile Strength	270 – 500 MPa (grade-dependent)
Yield Strength	≥ 240 MPa (S240 grade per EN 10346)
Pencil Hardness	≥ 2H (per ASTM D3363)
Salt Spray Resistance	≥ 500 hours (per ASTM B117)
Gloss Level	10 – 90 GU (matte to high gloss, per ASTM D523)
Color Options	Full RAL palette + custom color matching
Profile Options	Corrugated, trapezoidal, standing seam, flat
Applicable Standards	ASTM A755 / A653, EN 10169 / 10346, JIS G3312

The PVDF coating variant offers superior weathering resistance with a gloss retention rate exceeding 80% after 10 years of outdoor exposure, making it the preferred choice for coastal and high-UV environments. All coils are tested for T-bend flexibility (≤ 2T, no cracking per ASTM D4145) and impact resistance (≥ 80 kg·cm, per ASTM D2794) before dispatch.

Get a Competitive Quote for Pre-Coated Galvanized Steel Roofing Sheets

Whether you are sourcing pre-coated galvanized steel roofing sheets for a large-scale infrastructure project or a specialized construction application, our team delivers mill-direct pricing, rapid lead times, and full documentation support including mill test certificates (MTC), SGS inspection reports, and compliance declarations. Share your specifications and target volume with us today to receive a tailored, cost-effective proposal.

Pre-coated galvanized steel roofing sheets manufacturer

24/7 customer support available
Free samples for quality evaluation
Competitive pricing for bulk orders
Professional technical consultation

Contact us today to get your free quote within 24 hours!

Pre-coated galvanized steel roofing sheets wholesale

Ratings & Reviews

4.5

Based on 8 reviews

5 5

4 2

3 1

2 0

1 0

Kevin R.

United States

2025-02-01

Initial Width Tolerance Issue — Resolved Promptly by Supplier

First order of 40 tons of 0.40 mm corrugated PPGI (Z120, PE coat, RAL 7016 anthracite grey, 1,000 mm width) showed width variance of ±0.05 mm on roughly 8% of sheets — outside the ±0.02 mm spec in our PO. I flagged this with the technical team immediately. They reviewed our CMM measurement data, confirmed the non-conformance, and arranged a partial replacement shipment within 12 days at no additional cost. The replacement batch was fully within spec. MTC and ASTM A653 compliance docs were accurate throughout. Issue was resolved professionally. Cautiously optimistic about the second order.

Omar A.

UAE

2025-02-22

Strong Technical Specs for Gulf Climate — Delivery Slightly Delayed

We sourced 70 tons of 0.60 mm PVDF-coated PPGI sheets (Z275 zinc mass, RAL 9002 grey white) for warehouse roofing in Dubai. The PVDF coating is clearly suited for our high-UV, high-humidity conditions — coating adhesion and hardness (2H confirmed) met our internal QC. Salt spray resistance exceeded 500 hours. However, delivery to Jebel Ali was 4 days behind the original schedule due to vessel booking changes — supplier communicated proactively and updated documentation promptly. SGS report and MTC were complete. Technical support was responsive. Would order again with clearer shipping timeline confirmation upfront.

Daniel F.

Australia

2025-03-16

Good Value on HDP Sheets — Minor Color Variance Acceptable

Ordered 50 tons of 0.55 mm HDP-coated PPGI corrugated sheets (Z200, RAL 6005 moss green) for agricultural sheds in Queensland. Overall quality is solid — ASTM A755 compliance confirmed, salt spray resistance passed 500 hours with no red rust. We did notice a slight gloss variation between two coils (within 5 GU range), which is technically within tolerance but noticeable side-by-side. Supplier acknowledged and offered priority re-inspection on future orders. Pricing is competitive for the HDP spec. Lead time was 21 days. We'll reorder with a note requesting tighter gloss matching.

Know your supplier

Zhonghe Building Materials Co., Ltd.

3 yrs on Sinoali.com

Located in China

Company information More goods

FAQ

Q: What materials do you offer for roofing and wall cladding?

A:We supply color coated steel coils, corrugated roofing sheets, glazed tiles, PPGI, PPGL and related roof accessories.

Q: How long is the service life of your roofing sheets?

Q: Can you provide customized colors and patterns?

Q: What thicknesses are available for color steel coils and sheets?

Q: Can your color steel sheets be used outdoors?

Q: How about the packaging to avoid damage during shipment?

Product display

Zhonghe Building Materials Co., Ltd. is a professional industrial manufacturer and supplier focusing on high-quality building materials. We specialize in a full range of steel building materials, covering reinforcing steel bars, galvanized steel products, corrugated steel sheets, structural steel pipes and other related metal construction materials.

Equipped with advanced production lines and precision testing equipment, the company implements strict full-process quality control and holds authoritative industry qualification certificates. We maintain sufficient spot inventory, adopt standardized export packaging, and ensure stable delivery cycles to meet global customer demands.

Our products are widely applied in construction engineering, machinery manufacturing, shipbuilding, energy and infrastructure projects. Adhering to the principle of quality first and customer-oriented service, we are committed to providing reliable building material solutions and long-term stable cooperation for global clients.