A355 Thick-Walled Steel Pipes – High-Strength Carbon Steel Pipes

SSM supplies high-quality ASTM A355 thick-walled steel pipes, designed for high-pressure, high-temperature, and structural applications. These pipes are widely used in oil & gas, petrochemical, power plants, and industrial pipelines, offering excellent strength, toughness, and durability.

Material – ASTM A355 Carbon Steel

A355 is a high-strength carbon steel suitable for pressure piping systems, especially in demanding high-stress environments. The thick-wall construction ensures extra mechanical strength and resistance to deformation.

Chemical Composition (Typical):

Carbon (C): 0.25–0.30%

Manganese (Mn): 0.60–1.10%

Phosphorus (P): ≤ 0.035%

Sulfur (S): ≤ 0.035%

Silicon (Si): 0.15–0.35%

Chromium (Cr): ≤ 0.25%

Mechanical Properties:

Minimum Yield Strength: 345 MPa

Minimum Tensile Strength: 485 MPa

Elongation: ≥ 20%

Impact Toughness: Good, suitable for ambient and moderately low temperatures

Features

Thick-Wall Construction: Suitable for high-pressure applications and structural pipelines

Hot-Rolled & Seamless Options: Offers flexibility for high-integrity systems

Custom Sizes & Standards: Can be manufactured according to ASTM A355, ASME, or customer drawings

High Corrosion & Wear Resistance: Reliable for industrial environments

Applications

High-pressure piping systems in oil & gas

Boiler and heat exchanger piping

Industrial structural projects

Hydraulic and power plants pipelines

Why Choose SSM

SSM ensures all A355 thick-walled steel pipes are fully inspected, certified, and meet international standards. With over 30 years of experience in steel supply, SSM provides high-quality, durable, and reliable piping solutions for demanding industrial applications.

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