GB 50242-2002 第6.2.2条
| **** | **Inspection method for the hydrostatic pressure test of the hot water supply system:** For steel pipe or composite pipe systems, the pressure drop shall not exceed 0.02 MPa within 10 min under the test pressure, then the pressure shall be reduced to the working pressure for inspection, with no seepage or leakage; for plastic pipe systems, the pressure shall be held steady for 1 h under the test pressure, with the pressure drop not exceeding 0.05 MPa, then held steady for 2 h at 1.15 times the working pressure, with the pressure drop not exceeding 0.03 MPa, and no leakage at the joints. |