TEST and INSPECTION PER: ASTM B-111, and Specifications As Noted
CONDENSER TUBES: Seamless tube and ferrule stock of copper and various copper alloys up to 31/8” inch inclusive, in diameter for use in surface condensers, evaporators, and heat exchangers.
Pre-Fabrication / Pre-Production Requirements |
Specification Details / Notes: |
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| Material Test Reports
Tubes Selected for a Stress Corrosion Cracking Environment |
When specified in P.O, tubes of Copper Alloy UNS Nos. C23000, C28000, C44300, C44400, C44500, C60800, C61300, C61400 and C68700 shall be subjected to a stress-relieving thermal treatment subsequent to straightening. |
In-Process Inspection & Testing Requirements |
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Mechanical Properties and Tests: a) Flattening Tests
b) Microscopic Examination
c) Expansion Tests
d) Mercurous Nitrate Test
e) Tensile Tests
Hydrostatic Test Pneumatic Test
Eddy Current Test in Lieu of Hydrotest |
The flattened elements shall not show cracking or rupture to the unaided eye. See ASTM B-111 for exceptions. Samples of annealed-temper tubes shall be subjected to Microscopic Examination at a magnification of 75 diameters. The expanded tube shall show no cracking or ruptures visible to the unaided eye. See ASTM B-111 for exceptions. The test specimens shall withstand without cracking, an immersion in a mercurous nitrate solution per Test Method B-154. This test is restricted to Copper Alloy UNS Nos. C23000, C28000, C44300, C44400, C44500, C60800, C61300, C61400 and C68700.
The pressure shall not exceed 1,000 psi unless otherwise stated in the P.O. Each tube shall be subjected to an internal air pressure of 60 psig minimum, for 5 seconds without showing evidence of leakage. Tubes may be tested in the final drawn, annealed, or heat-treated temper or in the drawn temper prior to final anneal or heat treatment unless otherwise stated in P.O. |
Final Inspection & Testing Requirements |
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Dimensional Requirements
Final Visual Inspection
Identification Marking of the Product Packaging and Package Marking |
With emphasis on outside diameter, wall thickness, Length, and squareness of cut ends.
In addition to line items above, the cut ends shall be deburred. Annealed or stress-relieved tubes shall be clean and smooth but may have a superficial, dull iridescent film on both the inside and outside surface. Drawn-temper may also have a superficial film of drawing lubricant present.
The material shall be separated by size, composition, and temper, and prepared for shipment. |
Note:
- May only be waived by the responsible Saudi Aramco, ASC, AOC Inspection
- See form SA175 – 000003 for instructions on using this
