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JIS G3454 Tube

1. Type: Plumbing pipe, G3454 tube······
2. Application: Water heating, conduit, plumbing pipe, oil, gas, etc
3. OD: 13.7-914.4mm, WT: 1.0-30mm, L: 1-12m or customers' request
4. Standard & Grade: JIS G3454 STPG 370/JIS G3454 STPG 410
5. End: Plain End, Beveled End, Treaded Protected With Plastic Cap
6. Delivery:Within 10-30 days and depends on your order quantity
7. Payment:TT, LC , OA , D/P
8. Packing:Bundled/In Bulk, Plastic Caps Plugged, Waterproof Paper Wrapped
Availability:
JIS G3454 Tube
JIS G3454 Tube
JIS G3454 Tube
JIS G3454 Tube
JIS G3454 Tube

What is the JIS G3455 Tube?

This Japanese Industrial Standard specifies the carbon steel pipes, hereinafter referred to as the “pipes”, used for pressure service at an approximate maximum temperature of 350℃. The pipes for high-pressure service shall be by JIS G3455. Standard: JIS G3454  JIS G3455  JIS G3456  Japanese Industrial Standard Uses: For conveying oil, gas, and other fluid.

Mechanical Properties of JIS G3454 Tube

GradeTensile Property (N/mm2)Yield Point or Yield Strength (N/mm2)Elongation (%)
NO. 11 Sample; NO. 12 SampleNO. 5 SampleNO. 4 Sample
LongitudinalTransverseLongitudinalTransverse
STPG370≥ 370≥ 215≥ 30≥ 25≥ 28≥ 23
STPG410≥ 410≥ 245≥ 25≥ 20≥ 24≥ 19

Note:

For the carbon steel pipes with the thickness of less than 8 mm, we use NO.12 or NO.5 sample for tensile test. The minimum elongation will be reduced by 1.5% from the table value when the thickness reduces 1 mm. The value obtained will be rounded to an integer value according to JIS Z8401 (a rounding method).

GradeSample ShapeElongation differs according to the wall thickness. (%)
>7-<8>6-<7>5-<6>4-<5>3-<4>2-<3>1-<2
STPG370NO.12 Sample30282726242221
NO.5 Sample25242220191816
STPG410NO.12 Sample25242220191816
NO.5 Sample20181716141211


Chemical Composition of JIS G3454 Tube

GradeCSiMnPS
STPG370≤ 0.25≤ 0.350.30-0.90≤ 0.040≤ 0.040
STPG410≤ 0.30≤ 0.350.30-1.00≤ 0.040≤ 0.040


Allowable Deviation of Outer Diameter and Wall Thickness JIS G3454

TypeAllowable Deviation of Outer DiameterAllowable Deviation of Wall Thickness
Hot-Working Seamless Steel Tube≤ 40A± 0.5 mm< 4 mm﹢0.6mm 0.5
≥ 30A ≤ 125A± 1%
150A± 1.6 mm
≥ 200A± 0.8%≥ 4mm﹢15% ﹣12.5%
For ≥350A ones, we can measure according to the perimeter. The allowable deviation is ± 0.5%.
Cold-Working Seamless Steel Pipe and Electric-Resistance Welded Steel Pipe≤ 25A± 0.03 mm< 3 mm ≥ 3 mm± 0.3 mm ± 10%
≥ 32A± 0.8%
For ≥350A ones, we can measure according to the perimeter. The allowable deviation is ± 0.5%.

Note:

  1. When we measure the outer diameter through perimeter, we can determine by converting circumference measurement or measured value to be the outer diameter. Both are applicable to the same tolerance (± 0.5%).

  2. For the repaired parts, confirm the wall thickness tolerance meets the above table. The outer diameter tolerance is not applicable to the table.

  3. The appearance of carbon steel pipes used below 350℃ is regulated by the following provisions:

    (1) The carbon steel tube should be straight with practicality. Its ends must be perpendicular to the tube axis.

    (2) The inner and outer of tube should be processed well without harmful defects.

  4. Size and Weight of Carbon Steel Pipe

Dimension of JIS G3454 Tube

Nominal sizeOutside diameter (mm)Carbon steelCarbon steel pipes for pressure service
pipes for ordinary<STPG>(JIS G3454)
piping <SGP>
(JIS G3452)Nominal thickness
ABThickness (mm)Sch10Sch20Sch30Sch40Sch60Sch80
61/810.521.72.22.4
81/413.82.32.22.43
103/817.32.32.32.83.2
151/221.72.82.83.23.7
203/427.22.82.93.43.9
251343.23.43.94.5
321.1/442.73.53.64.54.9
401.1/248.63.53.74.55.1
50260.53.83.23.94.95.5
652.1/276.34.24.55.267
80389.14.24.55.56.67.6
903.1/2101.64.24.55.778.1
1004114.34.54.967.18.6
1255139.84.55.16.68.19.5
1506165.255.57.19.311
2008216.35.86.478.210.312.7
25010267.46.66.47.89.312.715.1
30012318.56.96.48.410.314.317.4
35014355.67.96.47.99.511.115.119
40016406.47.96.47.99.512.716.721.4

Application of JIS G3454 Tube

  1.  Pressure service

  2.  High-pressure service and high temperature platform

  3.  Boiler or electric power

  4.  Machinery

  5.  Gas tank

  6.  Chemical engineering

  7.  Offshore and oil engineering

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