Regular Spangle Galvalume Steel Coil AZ50–AZ180 with 914–1250mm Width for Roof

Product Specification

Regular Spangle Galvalume Steel Coil AZ50–AZ180 with 914–1250mm Width for Roof Sheet and Construction Panel Fabrication

1.Product Overview

Regular spangle galvalume steel coil is mainly used for roof sheet production and light building panel fabrication where corrosion resistance, heat reflectivity, and surface consistency are important. Compared with conventional zinc-coated products, the aluminum-zinc coating structure provides a different protection mechanism and is widely used in roofing and exterior sheet applications.

For this type of material, buyers usually focus on AZ coating level, width compatibility with roll forming lines, and surface condition for visible building use. Widths from 914 mm to 1250 mm are suitable for common roof sheet and cladding production equipment.

2.Technical Solution

Product performance is based on the following technical characteristics:

• Hot dip Al-Zn coating with controlled AZ coating mass
• Aluminum component improving heat resistance and reflective performance
• Zinc component supporting sacrificial protection at cut edges
• Regular spangle surface suitable for standard roofing and cladding use
• Passivated, oiled, or anti-finger surface treatment for storage and downstream processing

For roof sheet fabrication, AZ coating level directly affects corrosion resistance and outdoor service life. The metallic Al-Zn surface also helps improve heat reflectivity, which is one reason galvalume coil is widely used in roofing systems and external building panels.

3.Specifications

4.Application

• Roof sheets and roofing components
• Wall cladding and exterior panels
• Garage doors and shutters
• Appliance outer panels
• Ventilation and industrial enclosures
• General building sheet fabrication

5.Processing

• Cut-to-length sheet production
• Slitting into strips
• Roll forming for roofing profiles
• Bending and profiling
• Surface painting or further coating
• Custom cutting according to project requirements

6.Advantages

• AZ50–AZ180 coating range supports different roofing and building environments
• Regular spangle surface is suitable for standard visible construction applications
• 914–1250 mm width range fits common roof sheet production lines
• Al-Zn coating offers good heat reflectivity for exterior sheet use
• Passivated, oiled, and anti-finger options improve storage and handling flexibility
• Coil format improves efficiency in continuous roll forming production

7.How to Choose

• General roof sheet production → AZ50–AZ100 is commonly selected according to project environment
• Longer outdoor service life → higher coating such as AZ150–AZ180 is usually preferred
• Visible cladding application → regular spangle is commonly accepted for standard building appearance
• Painting or further coating → anti-finger or passivated surface is often preferred
• Continuous production line → confirm width, coil ID, and coil weight with equipment capacity

8.FAQ

Q1: Is this product galvanized steel coil or galvalume steel coil?
This specification is galvalume steel coil, using an aluminum-zinc coating rather than a pure zinc coating.

Q2: Why is galvalume coil commonly used for roof sheets?
Because the Al-Zn coating provides good corrosion resistance and heat reflectivity, which are both important in roofing applications.

Q3: Can the coil be processed into roofing sheets directly?
Yes, it is commonly supplied for roll forming into roof sheets and wall cladding panels.

Q4: What surface treatment is suitable for storage before processing?
Passivated or oiled surface is commonly selected to improve temporary corrosion resistance during storage and transport.

Q5: What width range is available for this product?
Standard width is 914–1250 mm, suitable for common roofing and cladding production lines.