ISO 3183 erw steel pipe

JIS G3454 Carbon Steel Pipe

UNIASEN is a leading manufacturer of high-quality JIS G3454 carbon steel pipes. Our carbon steel pipes are manufactured strictly in accordance with Japanese industrial standards and can withstand pressures up to 350°C. They are widely used in the manufacture of automobiles, hydraulic systems, and precision machinery parts.

The JIS G3454 carbon steel pipes we offer include two grades, STPG 410 and STPG 370, both suitable for high-pressure services. STPG 410 is known for its excellent tensile strength and yield point, suitable for high-pressure applications; while STPG 370 is particularly suitable for machinery and automotive parts with its excellent ductility and toughness. Both steels have anti-corrosion coatings to ensure durability and a long life. The designed end types and joints make installation easy and secure.

UNIASEN is committed to providing high-performance JIS G3454 carbon steel pipes. They meet diverse industrial needs and ensure your project runs smoothly.

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JIS G3454 Specification

Standard JIS G3454
Usage Carbon Steel Pipes for Pressure Service
Steel Grade STPG370(STPG38), STPG410(STPG42), STPG410(STPG42)
Manufacturing Processes Seamless, ERW
OD Range 15A-350A or over
WT Range SCH10, SCH20, SCH30, SCH40, SCH60, SCH80
Pipe End PE, BE, Thread,Grooved
Pipe Surface Oil, Vanish, Black, Red, Galvanized, 3PE

Dimension of JIS G3454

Permissible Specified Outside Diameter and Specified Wall Thickness
Specified Outside Diameter
D
mm (in.)
Specified Wall Thickness
t
mm (in.)
Special Light Sizes a Regular Sizes
≥ 10.3 (0.405) to < 13.7 (0.540) ≥ 1.7 (0.068) to ≤ 2.4 (0.094)
≥ 13.7 (0.540) to < 17.1 (0.675) ≥ 2.2 (0.088) to ≤ 3.0 (0.118)
≥ 17.1 (0.675) to < 21.3 (0.840) ≥ 2.3 (0.091) to ≤ 3.2 (0.125)
≥ 21.3 (0.840) to < 26.7 (1.050) ≥ 2.1 (0.083) to ≤ 7.5 (0.294)
≥ 26.7 (1.050) to < 33.4 (1.315) ≥ 2.1 (0.083) to ≤ 7.8 (0.308)
≥ 33.4 (1.315) to < 48.3 (1.900) ≥ 2.1 (0.083) to ≤ 10.0 (0.394)
≥ 48.3 (1.900) to < 60.3 (2.375) ≥ 2.1 (0.083) to ≤ 12.5 (0.492)
≥ 60.3 (2.375) to < 73.0 (2.875) ≥ 2.1 (0.083) to ≤ 3.6 (0.141) > 3.6 (0.141) to ≤ 14.2 (0.559)
≥ 73.0 (2.875) to < 88.9 (3.500) ≥ 2.1 (0.083) to ≤ 3.6 (0.141) > 3.6 (0.141) to ≤ 20.0 (0.787)
≥ 88.9 (3.500) to < 101.6 (4.000) ≥ 2.1 (0.083) to ≤ 4.0 (0.156) > 4.0 (0.156) to ≤ 22.0 (0.866)
≥ 101.6 (4.000) to < 168.3 (6.625) ≥ 2.1 (0.083) to ≤ 4.0 (0.156) > 4.0 (0.156) to ≤ 25.0 (0.984)
≥ 168.3 (6.625) to < 219.1 (8.625) ≥ 2.1 (0.083) to ≤ 4.0 (0.156) > 4.0 (0.156) to ≤ 40.0 (1.575)
≥ 219.1 (8.625) to < 273.1 (10.750) ≥ 3.2 (0.125) to ≤ 4.0 (0.156) > 4.0 (0.156) to ≤ 40.0 (1.575)
≥ 273.1 (10.750) to < 323.9 (12.750) ≥ 3.6 (0.141) to ≤ 5.2 (0.203) > 5.2 (0.203) to ≤ 45.0 (1.771)
≥ 323.9 (12.750) to < 355.6 (14.000) ≥ 4.0 (0.156) to ≤ 5.6 (0.219) > 5.6 (0.219) to ≤ 45.0 (1.771)
≥ 355.6 (14.000) to < 457 (18.000) ≥ 4.5 (0.177) to ≤ 7.1 (0.281) > 7.1 (0.281) to ≤ 45.0 (1.771)
≥ 457 (18.000) to < 559 (22.000) ≥ 4.8 (0.188) to ≤ 7.1 (0.281) > 7.1 (0.281) to ≤ 45.0 (1.771)
≥ 559 (22.000) to < 711 (28.000) ≥ 5.6 (0.219) to ≤ 7.1 (0.281) > 7.1 (0.281) to ≤ 45.0 (1.771)
≥ 711 (28.000) to < 864 (34.000) ≥ 5.6 (0.219) to ≤ 7.1 (0.281) > 7.1 (0.281) to ≤ 52.0 (2.050)
≥ 864 (34.000) to < 965 (38.000) ≥ 5.6 (0.219) to ≤ 52.0 (2.050)
≥ 965 (38.000) to < 1422 (56.000) ≥ 6.4 (0.250) to ≤ 52.0 (2.050)
≥ 1422 (56.000) to < 1829 (72.000) ≥ 9.5 (0.375) to ≤ 52.0 (2.050)
≥ 1829 (72.000) to < 2134 (84.000) ≥ 10.3 (0.406) to ≤ 52.0 (2.050)
NOTE     Standardized values for specified outside diameter and specified wall thickness of pipe are given in ISO 4200 [7] and ASME B36.10M[8]
a    Pipe having the combination of specified outside diameter and specified wall thickness is defined as special light size pipe; other combinations given in this table are defined as regular size pipe.

JIS G3454 Chemical Requirement

Symbol of
Grade
C Si Mn P S
STPG370 0.25 max. 0.35 max. 0.30 to 0.90 0.040 max. 0.040 max.
STPG410 0.30 max. 0.35 max. 0.30 to 1.00 0.040 max. 0.040 max.
Other alloy elements than those given in this table may be added as required.

Mechanical Requirement of JIS G3454

Tensile Strength,Yield Point Or Proof Stress,And Elongation
Symbol of
Grade
Tensile
Strength

N/mm2

Yield Point or proof

N/mm2

Elongation %
Test pieces No.11
Test pieces No.12
Test pieces No.5 Test pieces No.4
Parallel to pipe axis Perpendicular to pipe axis Parallel to pipe axis Perpendicular to pipe axis
STPG370 370 min. 215 min. 30 min. 25 min. 28 min. 23 min.
STPG410 410 min. 245 min. 25 min. 20 min. 24 min. 19 min.
NOTE: 1 N/mm2=1 MPa

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