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ASTM A179 Seamless Boiler tubes
Standard: ASTM A179/ ASME SA179
Grade: A179/ SA179
Outside Diameter: 1/4″ – 4 3/4″ [6.35 – 120.65 mm]
Thickness: 0.02″ – 0.375″ [0.51 – 9.53 mm]
Length: 6M/ 12M or Customized
Test Options: Hydrostatic/ Hardness/ Flattening/ Flaring/ Flange
Ends: Plain/ Bevel
Usage: Heat-Exchanger and Condenser Tubes
Surface: Black/ Varnish/ Galvanized/ Oiled, etc.
Product Description
What is Seamless ASTM A179 Boiler Tubes ?
ASTM A179 boiler tubes is a standard specification for seamless cold-drawn low-carbon steel boiler tubes for tubular heat exchangers, condensers, and similar heat transfer apparatuses.
While it can be used in some lower-pressure or smaller boiler applications, its primary focus is on efficient heat transfer in equipment like heat exchangers and condensers, rather than solely high-pressure steam generation in the main boiler sections.
ASTM A179 Boiler Tubes vs. ASTM A192 vs. ASTM A210 (Key Differences):
The main distinction lies in their intended application and the stress conditions they are designed to handle:
- ASTM A179:
- Application: Primarily for heat exchangers and condensers, and generally suitable for medium and low-temperature heat transfer applications (maximum operating temperature often cited as ).
- Manufacturing: Seamless cold-drawn.
- Carbon Content: Low carbon steel.
- Strength: Good strength, but typically lower than A210.
- ASTM A192:
- Application: For high-pressure boiler tubes and superheaters. It’s often used for boiler heating surface tubes like economizers, water walls, and superheaters where high pressures and temperatures up to around are present.
- Manufacturing: Seamless (can be hot-finished or cold-finished).
- Carbon Content: Low carbon steel.
- Strength: Designed for high pressure, with similar mechanical properties to A179 but often allowing for a slightly higher hardness (less emphasis on ductility for bending).
- ASTM A210:
- Application: For seamless medium-carbon steel boiler and superheater tubes for high-pressure service. It’s often chosen for more demanding, very high-temperature sections like superheaters where greater strength and creep resistance are required, especially above the temperature ranges typically associated with A179.
- Manufacturing: Seamless (hot-finished or cold-finished).
- Carbon Content: Medium carbon steel.
- Strength: Higher strength (especially Grade C) compared to A179 and A192, making it suitable for more extreme conditions.