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 type of tube is selected based on its mechanical properties, corrosion resistance, and suitability for high-temperature applications.

Mechanical Properties:

Material Class Finish Type Tensile Strength
N/mmÂ²

{kgf/mmÂ²}
Yield Point or Proof Stress
N/mmÂ²

{kgf/mmÂ²}
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 - 410min{42} 245 min{25} 25 min 20 min 24 min 19 min

STFA 12 - 380min{39} 205 min{21} 30 min 25 min 24 min 19 min

STFA 22 - 410min{42} 205 min{21} 30 min 25 min 24 min 19 min

STFA 23 - 410min{42} 205 min{21} 30 min 25 min 24 min 19 min

STFA 24 - 410min{42} 205 min{21} 30 min 25 min 24 min 19 min

STFA 25 - 410min{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 the required standards for strength, durability, and performance in demanding industrial environments. The dimensional tolerances help maintain consistency and compatibility with other components in piping systems. Proper selection of the right material and size is crucial to ensuring safe and efficient operation in boiler applications.
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