GuoYu Steel specializes in manufacturing and distributing Galvalume Roofing Sheet AZ150, backed by state-of-the-art production facilities and a highly skilled technical team.

Our AZ150-grade galvalume sheets feature a 55%Al-Zn alloy coating with 150g/㎡ total coating weight, exceptional corrosion resistance, and precise dimensional accuracy, delivering consistent performance in cutting, bending, and outdoor installation. Customized sheet sizes and profiles are available to meet diverse construction requirements

Reliable quality. Flexible order quantities.

As a manufacturer, we provide consistent quality and responsive support for every order.

Large or small, we treat each inquiry with the same attention.

Send us your requirements and receive a quick quotation.

Quality Control for Galvalume Roofing Sheet AZ150

Tianjin Guoyu Steel enforces stringent quality control across the full production cycle of Galvalume Roofing Sheet AZ150, from raw material sourcing to final delivery.

• Incoming Material Inspection

  All AZ150-grade galvalume coil substrates are tested for coating weight (150g/㎡ total), chemical composition (55%Al-Zn alloy), and surface cleanliness; non-conforming materials are rejected immediately to guarantee the corrosion resistance of finished sheets.
• 
  
• In-Process Inspection

  Key forming parameters (sheet flatness, dimension tolerance, profile accuracy, coating adhesion) are continuously monitored, with real-time adjustments to meet construction industry standards and customer specs.
• 
  
• Final Inspection & Documentation

  Each batch undergoes a comprehensive check of coating thickness uniformity, sheet size, surface defect rate, and mechanical strength before shipment. Mill Test Certificates (MTC) and detailed inspection reports are available on request.