Seamless
JIS G3454 Carbon Steel Pipe
JIS G3454 (STPG) seamless carbon steel pipes for pressure service — the Japanese standard for high-temperature and high-pressure piping in power plants, refineries, and industrial facilities.
JIS G3454 STPG pipe
OVERVIEW
The Japanese pressure pipe standard.
JIS G3454 covers carbon steel pipes for pressure service, designated STPG 370 and STPG 410. It is the standard specification for Japanese-engineered projects and is widely used across Southeast Asia, the Middle East, and Africa in facilities designed by Japanese EPCs and process licensors.
Global Seamless manufactures JIS G3454 equivalent pipes with dual certification to both JIS and ASTM A53/A106 standards, enabling single-source procurement for multi-standard projects.
✓ Grades: STPG 370, STPG 410
✓ Broadly equivalent to ASTM A53 Gr. A / Gr. B
✓ Metric nominal bore sizing
✓ Hydrostatic tested per JIS requirements
✓ Dual JIS/ASTM certification available
✓ Broadly equivalent to ASTM A53 Gr. A / Gr. B
✓ Metric nominal bore sizing
✓ Hydrostatic tested per JIS requirements
✓ Dual JIS/ASTM certification available
JIS G3454 STPG seamless pipe
DIMENSIONAL SPECIFICATIONS
Available size range.
Cold Drawn Seamless (CDS)
| JIS Grade | Min Tensile (MPa) | ASTM Equivalent | Application |
|---|---|---|---|
| STPG 370 | 370 | A53 Gr. A | General pressure service |
| STPG 410 | 410 | A53 Gr. B / A106 Gr. B | High-temp pressure service |
APPLICATIONS & INDUSTRIES
Where these tubes get used.
Water & Utilities
High-pressure water mains, compressed air, and industrial utility piping.
MATERIAL GRADES
STPG 370 · STPG 410.
STPG 370
General Pressure
Standard grade for general-purpose pressure piping in Japanese-designed facilities.
STPG 410
High-Temp Pressure
Higher tensile grade for elevated-temperature and high-pressure service.
JIS G3456
STPT
Related JIS standard for high-temperature alloy steel pressure pipe.
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