How can the ductile iron pipe be tested?
In the hydraulic test, the ductile iron pipe can not be close to the back, support, pipe end and so on. The inspection must be carried out after all stops
The pipeline of water supply pipeline in winter pressure test, must have the corresponding prevention measures, antifreeze, then should give water pipes in the filling should be appropriate in some high, then the protective material for a little more to the interface covered.
Good command of pipe connection must be by hand when a pressure test, must be clear, on the back, pier, interface division, each part of the exhaust valve, must be responsible, then carefully inspected and clear and uniform pressure test.
Pipe in water pressure test, step by step step by step step up, and each time the boost value is 0.2 MPa, in each time after the boost, the heart must be determined after the voltage regulator can continue to step up
In the water test, temporary and long-term must be kept warm, in the spare time without water, emptying the pipe in time
