AZ150 Galvalume PPGI Steel Coil Coastal Roofing Cladding Salt Spray Resistant 0.4-0.8mm

AZ150 Galvalume PPGI Steel Coil is a salt spray resistant pre-painted steel coil engineered for coastal roofing and wall cladding in marine and high humidity environments. The substrate is a 55 percent aluminium-zinc coated galvalume steel with an AZ150 coating weight, which provides roughly two to six times the corrosion resistance of an equal weight of plain zinc coating. Combined with a durable polyester topcoat, the coil resists the chloride rich air and frequent moisture found near the sea, extending roof and wall life in coastal towns, ports and offshore facilities.

The aluminium-zinc alloy coating forms a protective barrier and offers excellent cut edge protection, while the colour topcoat adds UV and weather resistance and a clean, attractive finish. The material is easy to roll form into corrugated and trapezoidal roofing sheets and into wall cladding profiles, so contractors can install durable, low maintenance coastal buildings. Each coil is produced to international colour coating standards and supplied with a mill test certificate for full traceability.

• AZ150 Galvalume Substrate: A 55 percent aluminium-zinc coating gives two to six times the corrosion resistance of plain zinc, ideal for coastal and humid climates.
• Salt Spray Resistant: The galvalume and topcoat system resists chloride rich marine air, protecting roofs and walls in coastal towns, ports and offshore sites.
• Coastal Roofing and Cladding: Designed for corrugated and trapezoidal roofing sheets, wall cladding and facade profiles in seaside and humid environments.
• UV and Weather Resistance: The colour topcoat resists ultraviolet light, rain and temperature change, keeping buildings attractive and low maintenance.
• Good Formability: The flexible coating allows roll forming and bending into roofing and cladding profiles without cracking or peeling.
• Certified and Traceable: Produced under ISO 9001 management with SGS inspection and a mill test certificate covering coating weight, thickness and mechanical properties.

AZ150 Galvalume PPGI steel coil is used for coastal roofing sheets, seaside building wall cladding, carport and warehouse roofing, port and dock facility buildings, and agricultural and industrial structures in humid regions. It is also suited to residential roofing, factory roofs, fencing and partition panels near the coast, and to any project where high humidity or salt laden air would quickly rust ordinary galvanized steel. Its durability and low maintenance make it a cost effective solution for long life building envelopes in tropical and coastal locations.

Q: What is AZ150 galvalume steel coil?
A: It is a 55 percent aluminium-zinc coated steel coil with an AZ150 coating weight, then pre-painted for roofing and cladding, offering far better corrosion resistance than plain zinc.

Q: Why is galvalume better for coastal areas?
A: The aluminium-zinc coating resists chloride rich sea air two to six times better than an equal weight of plain zinc, so coastal roofs and walls last longer.

Q: What is AZ150?
A: AZ150 means a minimum total coating weight of 150 g/m2 of aluminium-zinc alloy, applied on both sides of the steel substrate.

Q: Is this coil suitable for roofing sheets?
A: Yes. It is widely roll formed into corrugated and trapezoidal roofing sheets and wall cladding profiles for coastal and humid climates.

Each coil is wrapped with PE film and waterproof paper, secured with steel strapping and loaded onto fumigated wooden pallets for ocean transport. Every coil is labelled with substrate, coating weight, colour, thickness, coil number and weight for full traceability. We supply mill test certificates, SGS inspection reports and pre-shipment photographs on request, and our ISO 9001 certified process ensures consistent quality. Sample coils and colour chips are available for approval before mass production.