Polyester coated steel coil for construction is a prepainted steel material used for roofing, wall cladding, building panels and other building enclosure applications. It combines a galvanized, galvalume or cold rolled steel substrate with a factory-applied polyester (PE) coating, supplied in thicknesses of 0.3–1.5 mm and widths of 600–1250 mm. Top coating thickness is typically 18–25 μm with back coating of 5–10 μm, and coating adhesion reaches 0 grade with T=2 bending performance without coating cracking. RAL and customized colors are available with ΔE ≤2.0 color difference control. Products can be supplied to GB, ASTM, EN and JIS standards with MTC EN 10204 3.1 and third-party SGS inspection reports.
Polyester Coated Steel Coil For Construction is a prepainted steel material used for roofing, wall cladding, building panels and other construction applications. It consists of a steel substrate and a factory-applied polyester coating, providing a consistent surface finish, coating adhesion and suitable processing performance for downstream fabrication.
Tianjin Shunchen supplies polyester coated steel coils with galvanized, galvalume or cold rolled steel substrates. The material can be specified according to thickness, width, coating thickness, color, surface finish and processing requirements.
Material and Coating Structure
The performance of polyester coated steel coil depends on both the steel substrate and the coating system. Hot-dip galvanized steel is commonly used for construction applications, while galvalume and cold rolled steel are also available for projects with different material requirements.
The polyester coating is produced through surface pretreatment, primer coating, top coating and high-temperature curing. This process creates a uniform coated surface while maintaining the flexibility required for subsequent forming and fabrication.
Shunchen provides a typical top coating thickness of 18–25 μm and a back coating thickness of 5–10 μm. Coating thickness can also be adjusted according to the intended application and project requirements.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product | Polyester Coated Steel Coil |
| Substrate | Galvanized Steel / Galvalume Steel / Cold Rolled Steel |
| Coating | Polyester (PE) |
| Thickness | 0.3–1.5 mm |
| Width | 600–1250 mm |
| Coil Weight | 1–15 tons |
| Top Coating Thickness | 18–25 μm |
| Back Coating Thickness | 5–10 μm |
| Thickness Tolerance | ±0.02 mm |
| Width Tolerance | ±1 mm |
| Color | RAL and customized colors |
| Surface Finish | High gloss / Matte / Embossed / Printed |
Construction Applications
Polyester coated steel coil is supplied as a continuous material and can be further processed into different construction components. It is commonly used for roofing sheets, wall cladding, exterior panels, sandwich panel facings and other building enclosure materials.
For industrial buildings and warehouses, the coil can be roll-formed into profiled roofing and wall panels. In commercial and architectural projects, customized colors and surface finishes can be selected to match the building design. The material can also be used for ceilings, partitions and other interior metal panels where a consistent coated surface is required.
- Roofing sheets for factories, warehouses and logistics facilities
- Wall cladding and exterior wall panels for industrial and commercial buildings
- Sandwich panel facings and enclosure systems
- Ceilings, partitions and interior metal decorative panels
- Commercial building exterior surfaces requiring color matching
- Residential and villa roofing and exterior components
Processing Performance
The coil can be processed through slitting, bending, roll forming and cutting according to the final panel design. Shunchen's reported test results include 0-grade coating adhesion and T=2 bending performance without coating cracking under the specified test conditions.
For applications involving complex forming or tight bending radii, the substrate grade, coating flexibility and processing conditions should be considered together when determining the appropriate specification.
Color and Surface Options
Construction projects can use different colors and surface finishes according to architectural requirements. Shunchen provides RAL colors and customized colors, with high-gloss, matte, embossed and printed surface options.
Color consistency is controlled using a color difference spectrophotometer, with a stated production control target of ΔE ≤2.0. This helps maintain a consistent appearance when multiple coils are used for the same project.
Quality Control and Standards
Quality inspection covers substrate dimensions, coating thickness, surface condition, color difference and coating adhesion. Shunchen's production facilities include continuous coating lines, online coating thickness measurement equipment, color inspection equipment and material testing facilities.
Polyester coated steel coil can be supplied according to applicable GB, ASTM, EN and JIS standards, including GB/T 12755-2021, GB/T 13448-2019, ASTM A755, ASTM A924, EN 10346, EN 10169, JIS G3312 and JIS G3322. MTC EN 10204 3.1 and third-party SGS inspection reports can be provided according to project requirements.
Customization and Supply
Shunchen supports customization of thickness, width, coil weight, substrate, coating thickness, color, surface finish and slitting specifications. The material can be prepared according to the requirements of roofing and wall panel manufacturers, building material suppliers and construction projects.
Tianjin Shunchen was established in 2014 and has developed production capabilities covering steel processing, galvanizing, coating and logistics. The company has more than 300 employees, annual production capacity exceeding 450,000 tons and more than 40,000 m² of production and warehouse space.
FAQ
What is polyester coated steel coil used for?
It is mainly used as a raw material for roofing sheets, wall cladding, sandwich panels, ceilings, partitions and other construction components.
What substrates are available?
The available substrates include galvanized steel, galvalume steel and cold rolled steel. The appropriate substrate depends on the required application and processing conditions.
Can the color be customized?
Yes. RAL colors and customized colors are available. High-gloss, matte, embossed and printed surface finishes can also be specified.
What thicknesses and widths are available?
The stated thickness range is 0.3–1.5 mm, with widths from 600–1250 mm. Coil weight typically ranges from 1 ton to 15 tons, and customized slitting is available.
Can polyester coated steel coil be roll formed?
Yes. The material can be processed by roll forming, bending, cutting and slitting. The substrate and coating specification should be selected according to the required forming process.
Request Polyester Coated Steel Coil for Your Construction Project
Tell us your required thickness, width, substrate, coating thickness, color, surface finish and application environment — our technical team will recommend a suitable specification and provide samples, test reports and a quotation.
