图片名称

JIS G3454

JIS G3454 carbon steel pipes are used for pressure conditions at an limited maximum temperature of 350℃. If you requires for higher pressure pipes shall consider JIS G 3455 standard. JIS G3454 Steel pipe can be manufactured into seamless steel pipe or electric-resistance welded steel tubes, the purchaser may designate the quality requirements on hot finished or cold finished state.

Tolerances on Outside Diameter and Wall Thickness:

Division

Tolerances on outside diameter

Tolerances on wall thickness

Hot-finished seamless steel pipe

40 A or under 0.5mm

Under 4mm

50A or over up to and incl. 125 A 1%

+0.6mm

 

-0.5mm

 

4mm or over

 

+15%

 

-12.5%

150A  1.6mm

200A or over 0.8%
For the pipe of nominal size 350 A or over, the tolerances on outside diameter may be determined by the measurement of the length of circumference. In this case, the tolerances shall be 0.5%.

Cold-finished seamless steel pipe  and electric resistance welded steel pipe

25 A or under 0.3mm

Under 3mm
0.3mm

 

3mm or over
10%

32 A or over 0.8%

 

For the pipe of nominal size 350 A or over, the tolerances on outside diameter may be determined by the measurement of the length of circumference. In this case, the tolerances shall be 0.5%.
Size (mm):

Outer Dimensions: 19.05mm - 114.3mm

Wall Thickness:2.0mm - 14 mm

Length: max 16000mm

Application: Carbon steel pipes for pressure service, high pressure service and high temperature service.

The main products of steel / steel grade:

JIS G3454(STPG370, STPG410)

Chemical Compositions(%):

Standard

Grade

C

Si

Mn

P

S

JIS G3454

STPG370

≤0.25

≤0.35

0.30-0.90

≤0.040

≤0.040

STPG410

≤0.30

≤0.35

0.30-1.00

≤0.040

≤0.040

Mechanical Properties:

Standard

Grade

Yield Strength (Mpa)

Tensile Strength (Mpa)

Elongation (%)

JIS G3454

STPG370

≥216

≥370

≥30

STPG410

≥245

≥410

≥25

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