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 various materials, including carbon steel, alloy steel, stainless steel, and nickel-chromium iron alloys, each suited for different operating conditions and temperature ranges.
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, making them ideal for high-temperature and high-pressure applications. The mechanical properties provided include tensile strength, yield point, and elongation, which are critical for determining the tube's durability and suitability for specific environments. Additionally, the dimensional tolerances help maintain consistent performance across a wide range of sizes and applications.
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