Welded pipe at the factory to go through rigorous testing to ensure compliance with the provisions of pipe quality standards and user requirements.
Pipe inspection items generally include: factory inspection items have the appearance quality, straightness, dimensions, and other types of weld quality inspection items (flattening, flaring, bending, etc.). Detection means available weld pipe either way hydrostatic testing, ultrasonic testing, eddy current testing in.
Hydrostatic test is the most common, most direct and most reliable way of weld line inspection, is in a variety of hydraulic test machine. When the pressure test, the first pass low-pressure water, filled the entire root steel side by side to make the air, and then to test pressure prescribed way through the booster and stabilize the prescribed time, at the test pressure, when no steel welds and around wet, spray, water leakage or permanent deformation, is considered qualified.
Welded steel pipe (steel pipe manufactured with a weld) is a tubular product made out of flat plates, known as skelp, that are formed, bent and prepared for welding.
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