0.50mm DX51D Z120 PE Pre Painted Steel Sheet RAL9002 for Roofing and Wall Cladding Applications

0.50mm DX51D Z120 PE Pre Painted Steel Sheet RAL9002 for Roofing and Wall Cladding Applications

１．Product Overview

0.50mm DX51D Z120 PE Pre Painted Steel Sheet is a color-coated galvanized steel product designed for roofing panels, wall cladding, building accessories, equipment housings, and general decorative sheet fabrication.

The product uses DX51D galvanized steel as the substrate, with a total zinc coating weight of 120g/m². A polyester paint system is applied to the galvanized surface through a continuous coil-coating process.

The 0.50mm thickness provides a practical balance between sheet rigidity and forming performance. RAL9002 offers a light grey-white appearance suitable for industrial buildings, warehouses, workshops, and architectural panel systems.

２．Technical Solution

The galvanized steel substrate provides the first level of corrosion protection. The Z120 zinc coating forms a metallic barrier over the base steel and also provides sacrificial protection at cut edges and areas of minor surface damage.

Before painting, the galvanized surface is cleaned and chemically treated to improve coating adhesion. A primer layer is then applied to support the bonding between the metallic substrate and the polyester top coating.

The PE top coating provides color, surface protection, and resistance to normal atmospheric exposure. A protective back coating can also be applied to improve reverse-side protection during storage, forming, transportation, and installation.

The coated sheet can be processed by cutting, bending, profiling, punching, and roll forming without requiring additional painting after fabrication.

３．Specifications

４．Application

• Roofing panels
• Wall cladding sheets
• Steel structure workshops
• Warehouse buildings
• Industrial building panels
• Garage doors
• Ceiling panels
• Ventilation equipment housings
• Electrical cabinet panels
• Household appliance components
• Furniture panels
• Decorative metal sheets
• General building accessories

５．Processing

• Cut-to-length processing
• Slitting
• Bending
• Punching
• Stamping
• Roll forming
• Profiling
• Panel fabrication
• Edge folding
• Mechanical fastening
• Protective film application
• Decorative sheet processing

６．Advantages

• The 0.50mm thickness supports lightweight roofing, wall cladding, and decorative panel production.
• DX51D substrate provides suitable forming performance for bending, profiling, and panel fabrication.
• Z120 zinc coating improves corrosion protection for general building and industrial applications.
• The PE paint system provides a consistent color appearance and surface protection for standard construction environments.
• RAL9002 is suitable for industrial buildings, equipment panels, ceilings, and architectural components requiring a light neutral color.
• The factory-applied coating reduces downstream painting work and simplifies production procedures.
• The flat sheet format is convenient for punching, cutting, bending, and small-batch fabrication.
• Customized sheet dimensions can help reduce cutting waste and improve material utilization.

７．How to Choose

• Choose the sheet thickness according to the required rigidity, forming radius, panel profile, installation span, and finished component weight.
• Select DX51D when the material will be used for general bending, profiling, roofing accessories, wall panels, and decorative fabrication.
• Choose the zinc coating according to the installation environment. Z120 is suitable for general construction applications, while heavier zinc coatings may be required for humid, coastal, agricultural, or highly exposed environments.
• Select PE coating for standard roofing, wall cladding, indoor decoration, and general industrial buildings.
• Consider HDP, SMP, or PVDF coating systems when improved weather resistance, UV resistance, or long-term color retention is required.
• Confirm the RAL color before production. Physical color samples should be approved when several batches will be used in the same project.
• Verify the sheet width and length according to cutting plans, fabrication equipment, panel dimensions, and installation requirements.
• Confirm whether protective film is required for visible panels or components with higher surface appearance requirements.

８．FAQ

Q1．What is the substrate grade of this pre painted steel sheet?

The representative substrate grade is DX51D galvanized steel, which is suitable for general forming and building panel fabrication.

Q2．What does Z120 mean?

Z120 indicates a total nominal zinc coating weight of approximately 120g/m² on both sides of the galvanized steel substrate.

Q3．What paint system is used?

The product uses a polyester paint system consisting of surface pretreatment, primer, and PE top coating.

Q4．Can this product be used for roofing sheets?

Yes. The sheet can be profiled, bent, or roll formed into roofing panels, wall cladding sheets, flashing, and other building components.

Q5．What is RAL9002?

RAL9002 is a grey-white color within the RAL color system. It is commonly selected for industrial buildings, equipment housings, ceilings, and wall panels.

Q6．Can the sheet dimensions be customized?

Yes. The width and length can be selected according to production capability, processing equipment, and finished product requirements.

Q7．What is the difference between pre painted steel sheet and pre painted steel coil?

Pre painted steel coil is supplied in continuous coil form for automated production lines. Pre painted steel sheet is cut to specified dimensions and is more convenient for individual fabrication, punching, bending, and small-batch processing.

Q8．How should pre painted steel sheets be stored?

The sheets should be stored indoors in a dry, clean, and ventilated environment. Water, condensation, packaging damage, surface friction, and prolonged outdoor storage should be avoided.