JIS Standard Seamless Carbon Steel Pipe

JIS G3454 is a Japanese industrial standard for carbon steel seamless pipes used in high-temperature and high-pressure applications, such as boilers and heat exchangers. It covers grades like STB340, STB410, and STB510, which are designed for strength, durability, and resistance to oxidation and scaling. These pipes are manufactured through hot or cold forming processes, ensuring precise dimensions and excellent surface quality.

JIS G3454 pipes undergo rigorous testing for mechanical properties, chemical composition, and hydrostatic performance. They are widely used in power plants, refineries, and industrial systems, providing reliable performance under demanding conditions.

Types of JIS G3454 Standard Seamless Steel Pipe

Standard and Material Grades

The standard grades of JIS G3454 seamless pipes mainly include STPG370 and STPG410.

Chemical Compositions

STPG370: Carbon (C) content is ≤0.25%, Silicon (Si) content is ≤0.35%, Manganese (Mn) content is 0.30 - 0.90%, Phosphorus (P) content is ≤0.040% and Sulfur (S) content is ≤0.040%.

STPG410: Carbon (C) content is ≤0.30%, Silicon (Si) content is ≤0.35%, Manganese (Mn) content is 0.30 - 1.00%, Phosphorus (P) content is ≤0.040% and Sulfur (S) content is ≤0.040%.

Mechanical Properties

STPG370: The yield strength is ≥216 MPa, the tensile strength is ≥370 MPa, and the elongation is ≥30%.

STPG410: The yield strength is ≥245 MPa, the tensile strength is ≥410 MPa, and the elongation is ≥25%.

Advantages of JIS G3454 Seamless Tubes

High pressure resistance and excellent sealing performance, which can ensure the safe operation of pipelines under high pressure.

Good corrosion resistance and high temperature resistance, prolonging the service life in harsh environments.

High dimensional accuracy and smooth inner and outer surfaces, reducing fluid resistance.

Applications of JIS G3454 Seamless tubes

Widely used in the petroleum and natural gas industry for oil and gas transportation pipelines.

Applied in power plants for steam and water pipelines due to its high temperature and pressure resistance.

Also used in chemical industry pipelines to transport various corrosive media.

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