SGCC G50 Cold Rolled Galvanized Steel Strip 0.32mm × 80mm DX51D+Z for Roofing and Steel Structure

１．Product Overview

SGCC G50 cold rolled galvanized steel strip is a hot dip galvanized GI slit coil used for roofing, building materials, steel structures, industrial panels, welded pipes, appliance parts, automotive corrosion-resistant parts, refrigeration processing, and packaging applications.

This product uses DX51D+Z material with 0.32mm thickness, 80mm width, 150g/m² zinc coating, and regular spangle surface. The narrow strip format is suitable for downstream fabrication requiring controlled strip width and galvanized corrosion protection.

２．Technical Solution

The steel strip is produced by cold rolling or cold forming, followed by hot dip galvanizing to form a zinc protective layer on the steel surface.

Surface treatment options include chromed, skin pass, oiled, slightly oiled, and dry finish. These treatments support surface smoothness, temporary rust protection, storage stability, and downstream processing.

Regular spangle provides a conventional galvanized appearance, while zero, mini, and big spangle options can be selected for different appearance and coating requirements.

３．Specifications

４．Application

This galvanized steel strip is suitable for industrial panels, roofing, building materials, steel structures, greenhouse pipes, gas pipes, heating pipes, industrial and civil building roof panels, roof grilles, home appliance shells, kitchen utensils, automotive corrosion-resistant parts, food storage, material transportation, refrigeration processing, and packaging.

It can be used where narrow galvanized strip requires corrosion resistance, controlled width, and forming performance.

５．Processing

The product supports slitting, cutting, roll forming, bending, stamping, punching, welding, profiling, and fabrication.

Customized width, thickness, zinc coating, surface treatment, coil ID, coil weight, and packing method can be supplied according to downstream production requirements.

６．Advantages

• 0.32mm thickness and 80mm width support narrow strip fabrication and component production.
• 150g/m² zinc coating provides corrosion protection for roofing, building, and industrial applications.
• DX51D+Z material supports general forming and galvanized strip processing.
• Regular spangle provides a traditional galvanized surface appearance.
• 508mm and 610mm coil ID options support common processing equipment.
• Surface options such as chromed, skin pass, oiled, slightly oiled, and dry finish support different storage and processing requirements.

７．How to Choose

• Choose 0.32mm × 80mm when narrow galvanized strip is required for component fabrication.
• Choose 150g/m² zinc coating for medium corrosion protection requirements.
• Choose oiled or slightly oiled surface when temporary storage protection is required.
• Choose skin pass surface when improved flatness and surface consistency are needed.
• Choose dry surface when oil-free processing is required.
• Confirm thickness, width, zinc coating, spangle, surface treatment, coil ID, and coil weight before production.

８．FAQ

Q1．What is the main size of this product

The main size is 0.32mm thickness and 80mm width.

Q2．What material is used

The listed material is DX51D+Z.

Q3．What zinc coating is supplied

The listed zinc coating is 150g/m², with a general range of 30-275g/m².

Q4．What surface treatments are available

Chromed, skin pass, oiled, slightly oiled, and dry surface treatments are available.

Q5．What are the main applications

The product is mainly used for industrial panels, roofing, building materials, steel structures, welded pipes, appliance parts, automotive corrosion-resistant parts, refrigeration processing, and packaging.