275g/M2 Silicon Micron Pre Painted Steel Sheet Color Coated 700 1250mm Zinc Coils

275g/M2 Silicon Micron Pre Painted Steel Sheet Color Coated 700 1250mm Zinc Coils

1. Product Overview

Pre painted steel coil is used where a zinc coated steel substrate and a finished color surface are both required in one material. This product range is suitable for roofing sheets, wall cladding, façade panels, and general building sheet fabrication where corrosion resistance, appearance, and roll forming compatibility need to be considered together.

The listed range covers 0.18–1.20mm thickness and 700–1250mm width. A zinc coating range of 40–275g/m2 is provided, with Z275 positioned for projects that need a higher metallic coating level within this product family.

2. Technical Solution

The product uses galvanized steel as the base corrosion barrier and an organic paint system as the visible surface layer. In actual use, service performance depends on three linked factors: zinc coating weight, top and back paint build, and the downstream forming and installation route.

The top side uses 15–20 micron polyester with 5 micron primer. The back side uses 5–7 micron or 7–8 micron polyester with 5 micron primer. Paint systems listed on this page include PE, SMP, PVDF, and HDP. SMP is generally selected when better weather exposure resistance is required than standard polyester systems.

For exterior use, cut edge exposure, drainage condition, overlap design, and actual atmosphere also affect final durability. The metallic coating and paint system should therefore be selected together rather than treated as separate decorative choices.

3. Specifications

4. Application

• This material is suitable for roofing sheets, wall cladding, steel structure buildings, workshops, airports, and storeroom panels.
• It can also be used for vehicle related exterior sheets, furniture sheet parts, and electrical industry sheet applications where a finished painted surface is preferred over post-paint processing.
• For roofing and cladding use, the final result depends on coating level, profile design, overlap detailing, and local exposure conditions.

5. Processing

• The coil can be supplied for cut to length processing, slitting, roll forming, and corrugated sheet production.
• It is suitable for roofing panel conversion, wall panel fabrication, and general sheet metal processing.
• When the visible face must remain clean after fabrication, protective film can be selected to reduce scratching during transport, storage, and installation.

6. Advantages

• The 40–275g/m2 zinc coating range allows the product to be matched to different corrosion environments.
• Z275 gives a higher metallic coating option within the listed range for projects that require stronger substrate protection.
• The 15–20 micron top coating with 5 micron primer provides a defined paint build for exterior sheet applications.
• The 700–1250mm width range matches mainstream roofing and cladding processing lines.
• Multiple paint systems including SMP and PVDF allow the sheet to be selected by actual weather exposure and finish retention requirement.

7. How to Choose

• Choose a lower zinc coating level for lighter service conditions and a higher coating level within the listed 40–275g/m2 range when the environment is more demanding.
• Choose PE for standard projects, SMP for stronger weather exposure, HDP for higher durability demand, and PVDF when longer finish retention and stronger UV resistance are more important.
• Choose thinner gauges when easier forming and lower panel weight are important. Choose thicker gauges when the panel needs more rigidity.
• Choose the final width according to panel layout, effective coverage, and roll forming line configuration.

8. FAQ

Q1. What is the zinc coating range of this pre painted steel coil
The listed zinc coating range is 40–275g/m2.

Q2. What thickness range does this product cover
The listed thickness range is 0.18–1.20mm.

Q3. What width range is available
The listed width range is 700–1250mm.

Q4. What paint systems are available
The listed paint systems are PE, HDP, SMP, and PVDF.

Q5. Is this product suitable for roofing and cladding
Yes. It is suitable for roofing sheets and wall cladding panels when the coating level, paint system, profile design, and installation details are matched to the service condition.