JIS G3467 boiler tube specifications
JIS G3467 Boiler Tube Specifications
JIS G3467 boiler tubes are widely used in the petrochemical industry for heating fluids in open-fire heaters, such as boilers. These tubes are available in several types, including carbon steel, alloy steel, stainless steel, and nickel-chromium iron alloy tubes. Each type is selected based on its mechanical properties, corrosion resistance, and performance under high-temperature conditions.
Mechanical Properties:
| Class Symbol | Finish Type | Tensile Strength
N/mm² {kgf/mm²} |
Yield Point or Proof Stress
N/mm² {kgf/mm²} |
Elongation % | |||
|---|---|---|---|---|---|---|---|
| No. 11 Test Piece
No. 12 Test Piece |
No. 5 Test Piece | No. 4 Test Piece | |||||
| Longitudinal Direction | Transverse Direction | Longitudinal Direction | Transverse Direction | ||||
| STF 410 | - | 410 min {42} | 245 min {25} | 25 min | 20 min | 24 min | 19 min |
| STFA 12 | - | 380 min {39} | 205 min {21} | 30 min | 25 min | 24 min | 19 min |
| STFA 22 | - | 410 min {42} | 205 min {21} | 30 min | 25 min | 24 min | 19 min |
| STFA 23 | - | 410 min {42} | 205 min {21} | 30 min | 25 min | 24 min | 19 min |
| STFA 24 | - | 410 min {42} | 205 min {21} | 30 min | 25 min | 24 min | 19 min |
| STFA 25 | - | 410 min {42} | 205 min {21} | 30 min | 25 min | 24 min | 19 min |
Dimension Tolerance:
| Nominal Diameter | Outside Diameter (mm) | Wall Thickness (mm) | 4.0 | 4.5 | 5.0 | 5.5 | 6.0 | 6.5 | 7.0 | 8.0 | 9.5 | 11.0 | 12.5 | 14.0 | 16.0 | 18.0 | 20.0 | 22.0 | 25.0 | 28.0 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | ||||||||||||||||||||
| 50 | 2 | 60.5 | 5.57 | 6.21 | 6.84 | 7.46 | 8.06 | 8.66 | 9.24 | 10.4 | 11.9 | Â | Â | Â | Â | Â | Â | Â | Â | ||
| 65 | 2 1/2 | 76.3 | Â | 7.97 | 8.79 | 9.60 | 10.4 | 11.2 | 12.0 | 13.5 | 15.6 | Â | Â | Â | Â | Â | Â | Â | Â | ||
| 80 | 3 | 89.1 | Â | 9.39 | 10.4 | 11.3 | 12.3 | 13.2 | 14.2 | 16.0 | 18.6 | 21.2 | Â | Â | Â | Â | Â | Â | Â | ||
| 90 | 3 1/2 | 101.6 | Â | 10.8 | 11.9 | 13.0 | 14.1 | 15.2 | 16.3 | 18.5 | 21.6 | 24.6 | 27.5 | Â | Â | Â | Â | Â | Â | ||
| 100 | 4 | 114.3 | Â | Â | 13.5 | 14.8 | 16.0 | 17.3 | 18.5 | 21.0 | 24.6 | 28.0 | 31.4 | 34.6 | Â | Â | Â | Â | Â | ||
| 125 | 5 | 139.8 | Â | Â | 16.6 | 18.2 | 19.8 | 21.4 | 22.9 | 26.0 | 30.5 | 34.9 | 39.2 | 43.4 | 48.8 | Â | Â | Â | Â | ||
| 150 | 6 | 165.2 | Â | Â | Â | 21.7 | 23.6 | 25.4 | 27.3 | 31.0 | 36.5 | 41.8 | 47.1 | 52.2 | 58.9 | 65.3 | Â | Â | Â | ||
| 200 | 8 | 216.3 | Â | Â | Â | Â | Â | 33.6 | 36.1 | 41.1 | 48.4 | 55.7 | 62.8 | 69.8 | 79.0 | 88.0 | 96.8 | 105 | Â | ||
| 250 | 10 | 267.4 | Â | Â | Â | Â | Â | 41.8 | 45.0 | 51.2 | 60.4 | 69.6 | 78.0 | 87.5 | 99.2 | 111 | 122 | 133 | 149 | 165 | |
These specifications ensure that JIS G3467 boiler tubes meet strict quality and performance standards. They are designed to withstand high temperatures and pressures, making them ideal for use in demanding industrial environments. Engineers and technicians rely on these detailed mechanical and dimensional data to select the most suitable tube type for their applications. Always refer to the latest standard documents for full compliance and technical details.
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