Aluminized Steel Pipe: Composition, Advantages, and Cost

Composition

Aluminized Steel pipes are made from a plate containing 90% aluminum and 10% silicon. This combination leverages the properties of both metals, creating a steel pipe with unique features. Our company offers these pipes in thicknesses ranging from 0.5 to 2.5 mm and with a coating thickness of 80 to 300 g/㎡ (double-sided).

Advantages

1. Strong Plasticity and High Ductility

These pipes are easy to process and shape, making them widely used in the automotive industry.

2. Good High Temperature Resistance and Heat Dissipation

The iron-aluminum alloy formed in the substrate and coating gives these pipes excellent high-temperature resistance. They maintain high reflectivity at 450°C, and at 650°C, the protective layer prevents oxidation and remains intact, even with a gray appearance above 480°C. Their heat dissipation performance is ideal for various car parts, making them prevalent in automotive applications.

3. Corrosion Resistance

During the hot-dip plating process, molten aluminum reacts with oxygen to form an Al2O3 protective layer, which passivates the steel surface. This stable, water-insoluble layer has a self-healing function, providing strong resistance to chemical corrosion. Therefore, these pipes are ideal for automobile exhaust systems and other applications requiring high corrosion resistance.

4. Environmental Protection and Ecology

As environmental concerns grow, new energy electric vehicles are replacing oil vehicles. The selection of automobile plates demands strict environmental protection and safety performance. Aluminized Steel pipes meet these stringent requirements.

Cost Factors

1. High Raw Material Costs

The raw materials for these pipes cost about 1,500 yuan more per ton than galvanized materials.

2. Slow Production Speed

Production speed is about 20-30 meters per minute, which is one-fourth the speed of high-frequency welded tubes.

3. High Testing Costs

Each roll of raw materials requires cutting off the head and tail sections for weld strength, bending, and pressure tests before production can continue, adding to production and time costs.

4. High Processing Costs

The brittle and thick coating of aluminum-silicon steel plates makes them susceptible to damage during production. Ensuring high quality and surface finish necessitates good production processes and equipment, which only a few high-quality processing plants in China can provide.

5. Quality Weld Repairs

We use aluminum wire to repair welds, ensuring rust and corrosion resistance, unlike some manufacturers who use cheaper zinc wire, causing pipeline corrosion. These details help judge the reliability of the product.

By understanding these factors, you can make an informed decision about the quality and cost of aluminum-coated silicon steel pipes.

Teda Ganghua Metal -17 years
Steel Sheets/Plates Supplier

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