Cameroon ASTMA179 Seamless Cold Drawn Low Carbon Steel Heat Exchanger and Condenser Tubes

A192 Standard Specification for Seamless Carbon Steel Boiler Tubes for High Pressure Service

1. Scope 
1.1 This specification2 covers minimum-wall-thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus. 
1.2 This specification covers tubes 1⁄8 to 3 in. [3.2 to 76.2mm], inclusive, in outside diameter. 
NOTE 1—Tubing smaller in outside diameter and having a thinner wall than indicated in this specification is available. Mechanical property requirements do not apply to tubing smaller than 1⁄8 in. [3.2 mm] in outside diameter or with a wall thickness under 0.015 in. [0.4 mm]. 
1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. 
The inch-pound units shall apply unless the “M”designation of this specification is specified in the order. 

2. Referenced Documents 
2.1 ASTM Standards:
A 450/A 450M Specification for General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes3 

3. Ordering Information 
3.1 Orders for material under this specification should include the following, as required, to describe the desired material adequately: 
3.1.1 Quantity (feet, metres, or number of lengths), 
3.1.2 Name of material (seamless tubes), 
3.1.3 Manufacture (cold-drawn), 
3.1.4 Size (outside diameter and minimum wall thickness), 
3.1.5 Length (specific or random), 
3.1.6 Optional requirements (product analysis, Section 9,flange test, 11.3), 
3.1.7 Test report required (Certification Section of SpecificationA 450/A 450M), 
3.1.8 Specification number, and 
3.1.9 Special requirements. 

4. General Requirements 
4.1 Material furnished under this specification shall conform to the applicable requirements of the current edition of Specification A 450/A 450M, unless otherwise provided herein. 

5. Manufacture 
5.1 Tubes shall be made by the seamless process and shall 
be cold drawn. 

6. Heat Treatment 
6.1 Tubes shall be heat treated after the final cold draw pass at a temperature of 1200°F [650°C] or higher. 

1, Chemical composition:

2, Mechanical Properties:

3, Permissible Variations in Wall Thickness A

A, these permissible variations in wall thickness apply only to tubes, except internal-upset tubes, as rolled or cold-finished, and before swaging, expanding, bending, polishing, or other fabricating operations.

4, Permissible Variations in Outside Diameter A

5, Hydrostatic Test Pressures

6, Straightness Tolerances

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