The Spiral Steel Pipe should carry on the static water pressure test, and spiral steel pipe body should not leak in the test process. Hydrostatic pressure test can make the defect of the spiral steel tube exposed as much as possible. Clear the residual stress in the forming or welding of the spiral steel tube. Why does the water pressure test not keep good pressure? One reason is the pipe short seal is not good, the other one is the pipe has a defect of leakage.
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