Descriptors | Pipes, Pressure pipes, Seamless pipes, Seamed pipes, Ferritic steels, Alloy steels, Steels, Welding, Resistance welding, Designations, Chemical composition, Proof stress, Flattening tests, Bend testing, Visual inspection (testing), Defects, Dimensional tolerances, Ultrasonic testing, Sampling methods, Test specimens, Leak tests, Eddy-current tests, Test pressure, Marking, Verification, Confidence limits, Testing conditions, Electric welding, Yield strength, Tensile strength, Elongation at fracture |