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JIS G3454 Carbon Steel Pipes

JIS G3454 Carbon Steel Pipes

JIS G3454 pipes used for pressure service at an approximate maximum temperature of 350℃. We supply high quality JIS G3454 STPG370 and STPG410 seamless steel pipes for you.

Description

JIS G3454 carbon steel pipes


JIS G3454 pipes used for pressure service at an approximate maximum temperature of 350℃.



Chemical composition

                                                                                                                                                        unit: %

Letter symbol of grade

C

Max

Si

Max

Mn

P

Max

S

Max

STPG370
0.25
0.35
0.30-0.90
0.040
0.040
STPG410
0.30
0.35
0.30-0.90
0.040
0.040


Mechanical properties


Letter symbol of grade

Tensile strength

MPa

Yield points or proof stress

MPa

STPG370
370 min
215 min
STPG410
410 min
245 min


Tolerances on outside diameter and wall thickness


Division
Tolerance on outside diameter
Tolerances on wall thickness

Hot finished

seamless steel pipe

40A or under       
±0.5mm
under 4mm
+0.6mm, -0.5mm
50A or over up to and incl. 125A 
±1%4mm or over
+15%, -12.5%
150A
±1.6mm

200A or over
±0.8%

350A or over
±0.5%*π*D


cold finished

seamless steel pipe

and ERW steel pipe

25A or under
±0.3mmUnder 3mm
±0.3mm
32A or over
±0.8%3mm or over
±10%
350A or over
±0.5%*π*D


Hydrostatic Test Pressure (unit: MPa)


schedule

number sch

10
20
30
40
60
80

Hydrostatic

test pressure

2.0
3.5
5.0
6.0
9.0
12


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