Applications of JIS G3461 carbon steel tubes is a kind of pipe used for transferring heat inside and outside pipe. It can widely used as smoke tube, superheater tubes, boiler water tubes, air preheating tubes, accessories. JIS G3461
STB 340 Tubes
required low temperature annealing or normalizing may be performed.
JIS G3461
STB 410 Tubes
required low temperature annealing or normalizing may be performed. It can also be used in petroleum and chemical industries but it can't be used for low temperature services. We supply different grades of carbon steel pipes, regarding JIS G3461 STB JIS G3461 340, JIS G3461 STB 510, JIS G3461 STB 410, etc.
JIS G3461 Tubes Chemical Composition
|
Standard
|
Grade
|
Chemical Composition Limits (%)
|
|
C
|
Si
|
Mn
|
P
|
S
|
|
JIS G3461
|
JIS G3461 STB340
|
≤ 0.18
|
≤ 0.3
|
0.30-0.60
|
≤ 0.035
|
≤ 0.035
|
|
JIS G3461 STB410
|
≤ 0.32
|
≤ 0.35
|
0.30-0.80
|
≤ 0.035
|
≤ 0.035
|
|
JIS G3461 STB510
|
≤ 0.25
|
≤ 0.35
|
1.00-1.50
|
≤ 0.035
|
≤ 0.035
|
JIS G3461 Tubes mechanical properties
|
Grade
|
Tensile Property (N/mm2)
|
Yield Point or Yield Strength (N/mm2)
|
Elongation (%)
|
|
OD ≥20 mm
|
10 mm ≤OD <20 mm
|
OD <10 mm
|
|
NO. 11 Sample; NO. 12 Sample
|
NO. 11 Sample
|
NO. 11 Sample
|
|
Longitudinal
|
Transverse
|
Transverse
|
|
JIS G3461 STB340
|
≥ 340
|
≥ 175
|
≥ 35
|
≥ 30
|
≥ 27
|
|
JIS G3461 STB410
|
≥ 410
|
≥ 255
|
≥ 25
|
≥ 20
|
≥ 17
|
|
JIS G3461 STB510
|
≥ 510
|
≥ 295
|
≥ 25
|
≥ 20
|
≥ 17
|