Spiral steel pipe carrying water application to conduct a hydrostatic test, usually it is testing machine to test when trials to ensure the quality of the spiral steel pipe. Spiral steel pipe hydrostatic testing machine works:

Spiral steel pipe hydrostatic testing machine during a pressure test, the first sealing device by the end of the test pipe ends sealed and injected into the low-pressure water pipe air discharged through the exhaust valve in the water injection process, full of low-pressure water through the supercharging device to high-pressure water is injected into the tube to pressurize until it reaches the required test pressure. Holding pressure required test pressure is reached at the stipulated time, if the large diameter spiral steel pipe pressure test without leakage, deformation, etc., relief. And then open the end portion of a sealing device, a discharge of low-pressure water to test large diameter spiral pipe to the inspection station for visual inspection whether the suspicious permeation. Standards require changes in the pressure of the pressure test to process the curve using automatic recording device records.