Galvalume steel combines the barrier protection of aluminum with the sacrificial protection of zinc in an optimal 55:43.4 ratio. This unique alloy delivers 2-4 times the corrosion resistance of pure zinc coatings, especially in marine and industrial atmospheres. The aluminum-rich surface provides excellent heat reflectivity, reducing energy costs in roofing applications.
Product Overview
Galvalume steel combines the barrier protection of aluminum with the sacrificial protection of zinc in an optimal 55:43.4 ratio. This unique alloy delivers 2-4 times the corrosion resistance of pure zinc coatings, especially in marine and industrial atmospheres. The aluminum-rich surface provides excellent heat reflectivity, reducing energy costs in roofing applications.
Product Description
Produced by Shandong Jinlisheng New Materials, the Hot-Dipped Aluminum-Zinc Steel Sheet is a high-performance material for building walls and ventilation ducts. It uses cold-rolled steel as the base, with a hot-dipped aluminum-zinc-silicon coating (AZ30-AZ80) and post-chromating treatment.
For building walls: It has excellent corrosion resistance to resist atmospheric moisture and rain, with a smooth surface (regular/minimal/zero spangle options) that fits wall aesthetics. Its thickness (0.12-1.5mm) balances strength and light weight (10-14kg/㎡), reducing wall load and shortening construction time by over 40%.
For ventilation ducts: The aluminum-zinc coating (30-120g/m²) resists condensation corrosion inside ducts. It’s easy to cut, bend and weld, adapting to duct shape needs. Compliant with GB/T2518 standards, it ensures long-term stable operation in HVAC systems.
Specifiction
55% aluminum content provides superior barrier protection
AZ150 coating delivers 2-4x longer life than galvanized
Excellent heat resistance up to 315°C without degradation
Superior performance in marine and industrial environments
Attractive spangled appearance for visible applications
Application field
With even surace and beautiful appearance ,hot dip galvanized plate is widely used in pre-painted base plates,construction,household appliance,automotives,container manufacturing and other industries.
Building exterior walls and architectural facades
HVAC ventilation ductwork systems
Roofing in coastal and high-pollution areas
Agricultural buildings and livestock facilities
Applications requiring maximum service life
Construction
Roofing,walls ,ventilation ducts,rain troughs,sewers,partition studs,etc.
Vehicle and vessel manufacturing
Shells and internal structural parts of cars,trains and other vehicles.Top covers and partitions of vessels.
Container manufacturing
Containers for producing petroleum and barrels for containing diferent kinds of chemical raw materials,industrial troughs water tanks,militarybullet cases,fermentation vats for beer,barns,distribution cabinets ,containers,fertilizer boxes,etc.
Household appliances,furniture
Backboard shells of washing machine,refrigerator,air conditioning and dust collector ,wardrobes,tables,night tables,file cabinets,file cabinets,fileboxes,book shelves and other furniture.
Others
Machinery structural parts,manufacturing shells of motor,different kinds of smoke tubes,pipes,mechanized refrigerated warehouse,etc.
Why Choose Us
Advanced Production Lines: High-speed continuous hot-dip galvanizing equipment.
Strict Quality Control: 100% surface inspection and mechanical property testing.
Global Certification: ISO, ASTM, EN compliance for international markets.
Customization: Zinc coating, thickness, width, and surface treatments tailored to customer needs.
Export Expertise: Long-term supply to over 80 countries with professional logistics support.
FAQ
Q1: How does Galvalume compare to galvanized in corrosion resistance?
A: Galvalume provides 2-4x longer life than galvanized steel in most environments. The advantage is greatest in marine and industrial atmospheres where aluminum's barrier protection excels. In mild rural environments, advantage is approximately 2x.
Q2: Can Galvalume be painted or color coated?
A: Yes, Galvalume accepts paint systems well. Special pretreatment is recommended for optimal adhesion. Many manufacturers offer pre-painted Galvalume (PPGL) with 15-25 year warranties. The smooth surface provides excellent paint appearance.
Q3: Is Galvalume suitable for high-temperature applications?
A: Yes, Galvalume withstands continuous temperatures up to 315°C without significant degradation. This makes it ideal for ventilation ducts, exhaust systems, and industrial applications where galvanized coating would deteriorate.
Q4: What is the difference between AZ50, AZ100, AZ150?
A: These numbers indicate total coating weight in g/m² (both sides). AZ50 = 50g/m², AZ100 = 100g/m², AZ150 = 150g/m². AZ150 is standard for roofing and exterior applications, providing optimal balance of protection and cost.
Q5: Does Galvalume cost more than galvanized?
A: Galvalume typically costs 10-15% more than equivalent galvanized steel. However, the extended service life (2-4x) provides significantly lower lifecycle cost. For long-term applications, Galvalume is more economical despite higher initial cost.
DX51D Galvanized steel is a type of steel that has been treated with zinc to enhance its corrosion resistance.
1.Surface structure code / Not just polished
Normal zinc flower N NS Small zinc flower M MS Zinc free flower F FS Zinc ferroalloy ZF ZFS
2.Surface quality code
Ordinary surface FA Advanced surface FC Higher surface FB
3.Surface treatment symbol
Passivation C Unction O Paint sealant L Phosphating P Don't deal with U
Service
Custom Orders: Tailored sizes, thicknesses, and coatings to meet customer needs.
Quality Assurance: Rigorous testing for surface quality and coating thickness to ensure high standards.
Flexible Payment Options: Multiple payment methods like T/T, LC, and PayPal.
Global Delivery: Timely and reliable worldwide delivery for large and small orders.
Packaging: Safe packaging suitable for international shipment.
