Factors that influence system selection include the capabilities and limitations of each technology, as well as the diameter, wall thickness, tube condition, and throughput speed of the product under test. Where the test is applied in the manufacturing cycle also influences the choice of method and apparatus. This can range from tests limited to the heat affected zone on the weld mill with perhaps an in-line anneal, to full body inspection of cut lengths after drawing and annealing or other heat treating. Each test method has inherent capabilities and limitations that are different.
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