Polyester, fluorocarbon resin, polyurethane, and other polymer-coated steel factory suppliers, Wanzhi Group. We offer a variety of surface finishes, including high-gloss, matte, metallic, and wood grain, as well as OEM/ODM services for coated steel with galvanized, galvanized-aluminum, and zinc-aluminum-magnesium substrates. Wanzhi Factory is certified to ISO 14001 and ISO 9001 standards, and our products comply with international standards such as ASTM, JIS, EN, and GB.
What is Polymer-Coated Steel
Polymer-coated steel is a composite material formed by coating the surface of a steel substrate with polymer resin (such as polyester, polyurethane, fluorocarbon resin, etc.) using a special process. Its core structure consists of a steel substrate and a polymer coating, and it has functions such as corrosion resistance, wear resistance, and weather resistance.
Substrate
| Substrate Type | Mechanical Strength | Characteristics |
| Galvanized Steel (GI) | Tensile ≥340 MPa | Zinc coating 30-350g/m², basic corrosion resistance |
| Galvalume Steel (AZ) | Yield ≥550 MPa | 55% Al-43.4% Zn, heat resistance up to 600°C |
| Zinc-Aluminum-Magnesium Steel (ZAM) | Ductility ≥18% | Zn-6% Al-3% Mg, self-healing for scratches |
| Stainless Steel Substrate | High temperature and acid-alkali resistance |
Polymer Coating Parameters
| Parameter | Range | Testing Standard |
| Coating Thickness | 15–250 μm | ISO 2808 |
| Adhesion | ≥T level (0 level no peeling) | ASTM D3359 |
| Salt Spray Resistance | 1000–3000 hours | ISO 9227 |
| Weather Resistance (QUV) | 2000+ hours, gloss retention >80% | ASTM G154 |
Specifications
| Grades | GI/GL/SPCC/SPCD/SPCE/DC01-DC07/Q195、Q215、Q235 |
|---|---|
| Colors | Top/Back：RAL，Painted steel，3D Painted steel, etc(can be customized) |
| Thickness | 0.12-1.5 mm |
| Width | 600-1250mm/ customized |
| Coil Weight | 3-6 tons/ customized |
| Substrate Type | Hot dip galvanized, Galvalume, Zinc alloy, Cold rolled steel, Aluminum-zinc plated steel，Zimalium |
| Zinc Coating Thickness | Z30-275g/ ㎡,AZ30-150g/ ㎡ |
| Introduction to Coating | PVDF、HDP、SMP、PE |
| Coating Thickness | Top ：10-40 um，Back：5-20 um |
| Inside diameter | 508/610mm |
| Package | Standard export package or as per your requirements |
| Certificates | SGS, ISO 9001,CE |
| Date of Delivery | 5-45 days |
Polymer Coating Categories
Polymer-coated steel coatings are divided into general-purpose coatings, weather-resistant coatings, anti-corrosion coatings, functional coatings, conductive/insulating coatings, etc., which protect the steel substrate from corrosion caused by external factors such as water, air, and acids and alkalis, thereby extending the service life of the steel.
| Coating Type | Composition | Advantages | Limitations |
| Polyester (PE) | Polyester resin + Pigments | Low cost, rich color choices | Medium weather resistance (10-15 years) |
| Fluorocarbon (PVDF) | 70% PVDF resin + 30% Acrylic | Ultra-durable (25+ years), UV/chemical resistance | High cost (2x PE) |
| Silicone-Modified Polyester (SMP) | Organosilicon-modified polyester | Excellent heat resistance (200°C), cost-effective | Moderate scratch resistance |
| Polyurethane (PU) | Two-component polymer | High hardness (3H pencil hardness), wear-resistant | Harsh construction conditions |
| Antibacterial Coating | Silver ions added | Bacterial inhibition rate >99.9% | High cost |
| Thermal Insulation Coating | Ceramic microbeads | Reflects infrared rays | High cost |
Polymer-Coated Steel Applications
Polymer-Coated Steel is widely used in indoor appliances, ordinary buildings, landmark buildings, coastal curtain walls, industrial roofs, high-temperature workshops, construction machinery, and logistics equipment due to its excellent protective and decorative properties.
Construction and Building Materials
- Curtain Wall Systems: PVDF-coated aluminum panels, PE/SMP/PVDF PPGI PPGL, coated textured panels.
- Industrial Roofing: SMP-coated profiled sheets (V-shaped lock seams), PVDF-coated color-coated steel tiles.
- Interior Decoration: Antimicrobial-coated perforated panels, matte polyester-coated steel sheets, etc.
Home Appliances and Consumer Electronics
- White Goods: PE-coated steel sheets, high-gloss PVC-coated sheets, etc.
- Electronic Products: Conductive-coated EMI shielding enclosures, conductive-coated steel plates.
Transportation
- New Energy Vehicles: Lightweight ZAM+PU battery pack housings, lightweight high-strength steel + low-gloss coatings.
- Rail Transportation: Fire-resistant coated interior panels, fluorocarbon-coated steel sheets, color-coated anti-slip panels, color-coated perforated panels.
Industrial Equipment
- Construction Machinery: Wear-resistant PU-coated boom arms
- Food Processing Machinery: Epoxy-coated stainless steel.
- Photovoltaic Mounting Structures: Epoxy resin-coated steel.
- Pipeline Systems: Double-layer polyethylene-coated steel pipes.
Polymer-Coated Steel Customization
Wanzhi Group offers OEM/ODM services for coated steel, providing Polymer-Coated steel tailored to your project design. Currently, our customization options include material grade, specifications, substrate, color, texture, pattern, coating, performance, product form, surface treatment, and further processing, among others.
Coating Customization Process
- Substrate: Galvanized steel, galvanized aluminum-zinc steel, stainless steel, etc.
- Color and Texture: RAL color chart/customized based on samples, wood grain/metal texture/wrinkled/leather texture/orange peel texture/mesh texture, etc.
- Patterns: Produced according to the patterns you provide, such as flowers, grass, marble, bricks, sky, etc.
- Performance Customization: Thickness produced according to application requirements, supporting various functional coating customizations.
- Product Form: Wanzhi Factory supports processing in multiple forms such as coils, sheets, and irregular parts.
Factory and Production Lines
Including substrate production lines, Wanzhi Group has a total of 7 coated steel production lines within its factory, capable of meeting various production and customization needs. Delivery times for various products range from 5 to 45 days, with an annual production capacity of 600,000 tons. If you need to visit the factory, inspect goods, obtain material certificates, or request samples, please feel free to contact us!
Project Cases of Polymer-Coated Steel
The coated steel projects we have participated in include industrial plant construction (aluminum-coated), greenhouse construction (PPGI coil), roof panel production (aluminum-coated, PPGI, PPGL coil), appliance production (gold-colored appliance panels), and construction projects (spiral pipes, galvanized steel structures, galvanized purlins, screws, etc.). Additionally, we supply finished products and metal materials to global steel wholesalers and distributors.
Wanzhi Steel – Agricultural Greenhouse Project in Turkmenistan
550 tons PPGI Steel Coil to Azerbaijan
100 tons of Galvanized Coils to Saudi Arabia
144 ton Steel Wire to Spanish
Project of PPGI Roofing en Libya
100 tons of GL and PPGL in Solomon Islands
Polymer-Coated Steel Pricing
The price of Polymer-Coated Steel ranges from 600 to 1,000 USD per ton. The most cost-effective option is PPGI-coated galvanized steel, while the most expensive is color-coated stainless steel. Of course, in addition to the base material, other key factors influencing price include thickness, width, and coating thickness. Leave us a message with the type of coated steel product you need to receive a free quote!
Polymer-Coated Steel combines the high strength of steel substrates with the flexibility of polymer coatings, achieving a balance between “zero-maintenance lifespan” and “visual customization” in harsh environments, making it an excellent decorative and structural support material.