DX53D AZ120 Galvalume Steel Coil with 20–275g/m² Aluzinc Coating for Roofing and

１．Product Overview

DX53D AZ120 Galvalume Steel Coil is manufactured using a hot-dip aluminum-zinc alloy coating process that combines the corrosion protection of zinc with the barrier protection of aluminum. The product is widely used for roofing systems, wall cladding, profile manufacturing, and pre-painted steel production.

The AZ120 coating provides long-term durability in atmospheric environments while maintaining excellent formability, weldability, and paint adhesion.

２．Technical Solution

The steel substrate is coated with an aluminum-zinc alloy layer consisting of approximately 55% aluminum, 43.5% zinc, and 1.5% silicon. This coating structure creates a protective barrier against corrosion while maintaining sacrificial protection at cut edges and exposed areas.

Additional surface treatments including chromating, oiling, and anti-fingerprint coating improve storage performance, processing stability, and surface appearance.

３．Specifications

４．Application

This Galvalume steel coil is widely used in roofing panels, wall cladding systems, steel structure buildings, garage doors, industrial buildings, warehouses, household appliances, transportation equipment, ventilation systems, electrical cabinets, and furniture manufacturing.

５．Processing

The material can be processed through slitting, cut-to-length production, roll forming, profiling, bending, stamping, and color coating production lines. Its stable coating adhesion supports efficient fabrication and downstream manufacturing.

６．Advantages

• Superior corrosion resistance compared with conventional galvanized steel
• AZ120 coating provides long-term atmospheric protection
• Excellent formability, weldability, and paintability
• Suitable for roofing and cladding applications
• Available with anti-fingerprint and chromated finishes
• Wide range of thickness and width options
• Stable coating adhesion and consistent surface quality
• Compatible with PPGL and pre-painted production lines

７．How to Choose

• Select AZ120 coating for projects requiring enhanced corrosion resistance.
• Choose DX53D grade when deep forming performance is required.
• Select anti-fingerprint treatment for exposed architectural applications.
• Match thickness according to structural load and profile requirements.
• Choose wider coils for efficient roofing sheet production.

８．FAQ

Q1．What is the composition of Galvalume coating
Galvalume coating consists of approximately 55% aluminum, 43.5% zinc, and 1.5% silicon.

Q2．What AZ coating range is available
The available AZ coating range is 20-275g/m², including AZ120.

Q3．Can this product be used for pre-painted steel production
Yes, the coil is suitable for PPGL and other color-coated steel manufacturing applications.

Q4．What thickness range can be supplied
Thicknesses from 0.30mm to 1.5mm are available.

Q5．What are the main applications of this product
It is widely used for roofing, wall cladding, steel structures, appliances, transportation equipment, and industrial fabrication.