Galvanized steel strip is a type of coated steel product that is widely used in various industries due to its excellent corrosion resistance and versatility. It is made by passing a continuous length of steel strip through a molten bath of zinc or zinc-based alloy, creating a protective zinc coating on the surface. The galvanizing process provides a barrier against corrosion and enhances the durability of the underlying steel.
The introduction of Galvanized Steel Strip offers several advantages:
1. Corrosion Resistance:
The zinc coating acts as a sacrificial layer, protecting the steel from rust and corrosion caused by exposure to moisture and atmospheric elements.
2. Versatility:
Galvanized steel strip is available in various thicknesses, widths, and coatings, making it suitable for a wide range of applications in construction, automotive, electrical, and other industries.
3. Formability:
The steel strip retains its formability even after the galvanizing process, allowing it to be shaped and fabricated into different products and components.
4. Cost-Effective:
Galvanized steel is relatively affordable compared to other corrosion-resistant materials, making it a cost-effective choice for many applications.
5. Low Maintenance:
The protective zinc coating reduces the need for regular maintenance and extends the lifespan of the steel strip.
6. Recyclable:
Galvanized steel is fully recyclable, contributing to sustainability and environmental friendliness.
Applications of Galvanized Steel Strip include:
1. Roofing and Cladding:
Galvanized steel strips are used in roofing sheets and wall cladding for their corrosion resistance and weatherproofing properties.
2. Automotive Components:
It is utilized in various automotive parts, including body panels, chassis, and reinforcements.
3. Electrical Enclosures:
Galvanized steel strips are used in electrical cabinets and enclosures to protect against corrosion and enhance longevity.
4. Conduit and Piping:
It is commonly used in electrical conduits and piping due to its corrosion resistance.
5. Storage and Shelving:
Galvanized steel strips are used in storage racks, shelving units, and furniture for their durability and resistance to corrosion.
6. Agricultural Equipment:
It is employed in agricultural machinery and equipment, such as fencing and irrigation systems, to withstand outdoor conditions.
Overall, Galvanized Steel Strip is a versatile and durable material that offers significant advantages for a wide range of applications, making it a popular choice in many industries.
In China, the standards for Galvanized Steel Strip are set and regulated by the Chinese National Standards (GB/T) issued by the Standardization Administration of China (SAC). The relevant GB/T standard for Galvanized Steel Strip is:
GB/T 2518: Continuously hot-dip zinc-coated steel sheets and coils.
GB/T 2518 specifies the requirements for continuously hot-dip zinc-coated steel sheets, steel strips, and coils. This standard covers the thickness, weight of the zinc coating, and other mechanical and surface properties of Galvanized Steel Strip.
In the United States, the standards for Galvanized Steel Strip are set and maintained by the American Society for Testing and Materials (ASTM). The most commonly referenced ASTM standard for Galvanized Steel Strip is:
ASTM A653/A653M: Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process.
ASTM A653/A653M covers the requirements for steel sheet products that are zinc-coated (galvanized) or zinc-iron alloy-coated (galvannealed) by the hot-dip process. This specification includes various types and grades of galvanized steel, including steel strip.
In the United Kingdom, the standards for Galvanized Steel Strip are generally aligned with the European standards set by the European Committee for Standardization (CEN). The most relevant European standard for Galvanized Steel Strip is:
EN 10346: Continuously hot-dip coated steel flat products for cold forming - Technical delivery conditions.
EN 10346 specifies the requirements for continuously hot-dip coated steel flat products with zinc (Z), zinc-iron alloy (ZF), zinc-aluminum alloy (ZA), aluminum-zinc alloy (AZ), or aluminum-silicon alloy (AS) coatings. The Galvanized Steel Strip falls under the category of zinc-coated (Z) or zinc-iron alloy-coated (ZF) products in this standard.
EN 10346 covers the mechanical properties, chemical composition, coating weight, thickness tolerances, and other performance characteristics of Galvanized Steel Strip. It is used as the basis for product certification and quality assurance in the European market, including the UK.
In Japan, the standards for Galvanized Steel Strip are set and regulated by the Japanese Industrial Standards (JIS). The relevant JIS standard for Galvanized Steel Strip is:
JIS G 3302: Hot-dip zinc-coated steel sheets and coils.
JIS G 3302 specifies the requirements for hot-dip zinc-coated steel sheets, steel strips, and coils. This standard covers the thickness, weight of the zinc coating, and other mechanical and surface properties of Galvanized Steel Strip.
