ASTM A358 Stainless Steel Welded Pipes

Performance description of ASTM A358 stainless steel pipes

1. High-temperature resistance

ASTM A358 stainless steel pipe is an austenitic chromium-nickel stainless steel pipe. In the supercritical thermal power units, the steam temperature can reach over 600℃ and the pressure exceeds 25Mpa. Under this harsh environments, the mechanical properties of steel pipes will decrease sharply, leading to the pipeline undergoes deformation and rupture. However, ASTM A358 stainless steel pipes rely on the synergistic effect of nickel and chromium in their chemical composition to form a stable austenitic structure, making steel pipes still maintain high strength and excellent oxidation resistance in high temperature environments.

2. Corrosion resistance

The chromium element in ASTM A358 stainless steel pipes forms a dense passivation film on the surface of the pipe, preventing the corrosive medium from contacting the metal layer and effectively resisting the erosion of multiple corrosive substances, extending the service life of steel pipes.

3. Welded performance

ASTM A358 stainless steel pipes are made by electric fusion welded process, which can effectively reduce the stress generated during welding, ensuring the sealing performance and stability of pipeline systems.

Specification

Quality test

After production, ASTM A358 stainless steel pipes undergo multiple strict quality inspection, including appearance inspections, dimensional measurement, tensile testing, bending testing, impact testing, and non-destructive testing, etc., to ensure that the performance of the steel pipe meet the requirements.

Product show

Applications

1. In the fields of thermal power generation and nuclear power, and other power industries, ASTM A358 stainless steel pipes are widely used for manufacturing of key parts such as boiler superheaters, reheaters, and main steam pipelines. Their excellent high-temperature resistance, providing guarantees for the safe and efficient operation of power equipment.

2. ASTM A358 stainless steel pipes rely on their excellent corrosion resistance to ensure the normal operation of pipeline systems in complex chemical environments, avoiding the risk of leakage caused by corrosion.

3. In additions, ASTM A358 stainless steel pipes have a smooth surface, are not prone to bacterial growth, and meet the standard of food hygiene, effectively preventing food contamination during transportation.

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