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JIS G3454 Carbon Steel Pipes

Publisher:TianchengTime:2018-07-08Number:75

JIS G3454 Carbon Steel Pipes

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.
Chemical Composition:

Letter symbol of gradeElongation %
 C Si Mn P S
 STPG 370 0.25 max. 0.35 max. 0.30 to 0.90 0.040 max. 0.040 max.
 STPG 410 0.30 max. 0.35 max. 0.30 to 1.00 0.040 max. 0.040 max.

Mechanical Property:

Letter symbol of gradeTensile strengthYield point or proof stressElongation %
kgf/mm2 {N/mm2}kgf/mm2 {N/mm2} No.11 and No.12 test pieces No. 5 test piecesNo. 4 test piece
 Longitudinal Transverse Longitudinal Transverse
STPG 37038 {373}min22{216} min30 min25 min23 min28 min
 STPG 410 42{412}min 25{245} min 25 min 20 min 19 min 24 min

Tolerances on Outside Diameter and Wall Thickness:

DivisionTolerances on outside diameterTolerances on wall thickness
Hot-finished seamless steel pipe40 A or under 0.5mmUnder 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 pipe25 A or under 0.3mmUnder 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%.


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