40 275g/M2 Zinc Coating Steel 700mm 1250mm EN 10169 DX51DZ Zinc Coated Steel Sheet

1. Product Overview

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

The available size range covers 0.18mm–1.20mm thickness and 700mm–1250mm width. The metallic coating range is 40–275g/m², and the paint structure uses polyester plus primer on the top side and back side. In practical use, these three factors work together: metallic coating for basic corrosion protection, paint system for surface barrier and color retention, and thickness for forming route and panel rigidity.

2. Technical Solution

This product follows an organic coated steel route based on coated steel substrate. 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. This coating build is relevant in actual fabrication because paint durability depends not only on color but also on primer support, substrate quality, and forming condition.

The product is available in polyester, SMP, and PVDF paint categories. Polyester is generally used for standard projects. SMP is more suitable where better weather exposure resistance is needed. PVDF is more suitable where stronger UV resistance and longer finish retention are required. For exterior performance, zinc coating level, paint system, panel design, drainage detail, cut edge exposure, and actual atmosphere all influence the final service result.

The page also gives thickness tolerance of +/-0.01mm and width tolerance of +/-2mm. For roll forming and sheet conversion, these dimensional controls are important because width consistency affects effective panel coverage and forming stability, while thickness consistency affects bending response and finished panel flatness.

3. Specifications

4. Application

• This material is suitable for industrial and civil construction, especially steel structure buildings and roofing sheet production.
• It can be used for roof panels, wall cladding, façade sheets, corrugated panels, workshop and warehouse coverings, airport and storeroom sheet parts, vehicle related exterior panels, furniture sheet components, and electrical industry sheet applications.
• For roofing and cladding use, the product is more suitable when the metallic coating level, paint category, and forming route are selected according to the actual outdoor environment.

5. Processing

• The coil can be supplied for cut to length processing, roll forming, slitting, plain sheet production, and corrugated sheet production.
• It is suitable for chromated, skin passed, dry, or unoiled supply depending on downstream handling and fabrication needs.
• Protective film can be added on the top side when the finished paint surface needs better scratch control during transport, storage, or installation.
• For profiled sheet production, thickness, hardness, and paint system should be selected together to match bend radius, panel profile depth, and forming speed.

6. Advantages

• The 40–275g/m² coating range allows the product to be matched to different corrosion environments instead of using one fixed coating level for all projects.
• The 0.18mm–1.20mm thickness range supports both lighter sheet conversion and more rigid roofing or cladding profiles.
• The 700mm–1250mm width range matches mainstream sheet and roll forming lines.
• The 15–20 micron top coat with 5 micron primer provides a defined paint build rather than an unspecified decorative layer.
• The page includes thickness and width tolerance values, which are useful for buyers who need better consistency in forming and finished panel dimensions.
• Multiple paint categories allow the material to be selected by actual weather exposure and finish retention requirement.

7. How to Choose

• Choose a lower zinc coating level for general indoor or lighter exterior conditions, and choose a higher zinc coating level within the listed 40–275g/m² range when the environment is more demanding.
• Choose polyester for standard projects, SMP for improved weather exposure resistance, and PVDF when long term exterior appearance and UV resistance are more critical.
• Choose thinner gauges when easier forming and lighter panel weight are required. Choose thicker gauges when the panel needs more rigidity.
• Choose soft or full hard condition according to the forming route and the final profile shape.
• Choose protective film when the painted surface will be exposed to repeated handling before installation.

8. FAQ

Q1. What is the zinc coating range of this color coated steel coil
The zinc coating range is 40–275g/m².

Q2. What thickness and width range does this product cover
The thickness range is 0.18mm–1.20mm and the width range is 700mm–1250mm.

Q3. What paint systems are available
The listed paint categories are polyester, SMP, and PVDF.

Q4. What is the coating structure on the top side
The top side uses 15–20 micron polyester plus 5 micron primer.

Q5. Can this product be used for roofing sheet production
Yes. It is suitable for producing roofing sheets, corrugated sheets, and wall cladding panels when the metallic coating, paint system, and forming route are matched to the actual service condition.