What Are The Hydrostatic Test Requirements For Line Pipe?

In accordance with API 5L and GB/T 9711, pipeline pipes shall be subject to hydrostatic test one by one, and the standard does not specify that non-destructive testing is allowed to replace hydrostatic test, which is significantly different from some Chinese steel pipe standards (such as SY/T 5037). The test pressure and pressure holding time shall be calculated and determined according to the standard formula.