Standard Specification for Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes

1. Flattening Test—One flattening test shall be made on specimens from each of two tubes from each lot or fraction thereof. 

2. Flaring Test—One flaring test shall be made on specimens from each of two tubes from each lot or fraction thereof. 

3. Flange Test—When specified as a substitute for the flaring test, for tubes having a wall thickness (actual mean wall) less than 10 % of the outside diameter, one test shall be made on specimens from each of two tubes from each lot or fraction thereof. For tubes other than specified above, the flange test shall not be required. 

4. Hardness Test—Rockwell hardness tests shall be made on specimens from two tubes from each lot. The term lot applies to all tubes, prior to cutting, of the same nominal diameter and wall thickness which are produced from the same heat of steel. When final heat treatment is in a batch-type furnace, a lot shall include only those tubes of the same size and the same heat which are heat treated in the same furnace charge. When the final heat treatment is in a continuous furnace, a lot shall include all tubes of the same size and heat, heat treated in the same furnace at the same temperature, time at heat, and furnace speed. 

5. Hydrostatic Test—Each tube shall be subjected to the hydrostatic test, or, instead of this test, a nondestructive electric test may be used when specified by the purchaser.

Orders for material under this specification should include the following, as required, to describe the desired material adequately: 

● Quantity (feet, meters, or number of lengths), 

● Name of material (seamless tubes), 

● Manufacture (cold-drawn), 

● Size (outside diameter and minimum wall thickness), 

● Length (specific or random), 

● Optional requirements (product analysis, flange test), 

● Test report required (Certification Section of Specification A450/A450M), 

● Specification number, and Special requirements.

ASTM A179 Tubes are widely used in industries such as petroleum, chemical, medical, food, light industry, machinery, instrument, include industrial pipeline and mechanical structure parts, etc.

● Pharmaceutical Equipment

● Chemical Equipment

● Sea Water Equipment

● Heat Ex-changers

● Condensers

● Pulp and Paper Industry

● Off-Shore Oil Drilling Companies

● Power Generation

● Petrochemicals

● Gas Processing

● Specialty Chemicals

● Pharmaceuticals

● Food & Beverage Production