Testing & Inspection
Combinations of destructive and nondestructive tests are utilized to ensure that we meet our customer’s specifications and expectations. Our quality system is ISO 9001:2000 certified.
Nondestructive Testing:
The primary nondestructive test used is 100% eddy current testing. The test unit is located in-line just after the tube is welded and before the tube is cut to length. This assures that every inch of tube is tested and avoids “end effects” associated with off-line eddy current testing.
The tubes are visually and dimensionally inspected and checked for dimensional conformance throughout the manufacturing process. Dimensional checks employ a variety of instruments including ring gauges, plug gauges, micrometers, calipers, and test fixtures.
Hydrostatic and pneumatic testing capabilities are also available.
In-Line Eddy Current Testing Equipment
Destructive Testing:
Destructive tests, conducted in accordance with applicable ASTM or ASME Specifications, include expansion testing, flattening, and reverse flattening testing. Overall tube integrity and weld integrity are critically evaluated with these tests.
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Reverse Flattening Test |
Expansion Test |
Flattening Test |
Applicable Specifications for Fineweld® Tube’s Welded Tube:
| ASME SB-543 |
Heat Exchanger Tube |
| ASTM B-543 |
Heat Exchanger Tube |
| ASTM B-552 |
Desalination Tube |
| ASTM B-587 |
Brass Tube |
| ASTM B-956 |
Integral Fin Tube |
The testing requirements listed in the above specifications are virtually identical to those that are listed by equivalent seamless tube specifications. Testing conducted by Olin Brass Fineweld
® Tube typically exceeds the ASTM/ASME requirements by 200 to 600%.
Additional information regarding the advantage of welded tube vs. seamless tube are found in “The Quality Advantages of Olin Brass Fineweld® Tube ‘Welded’ Tube”.