GB 50242-2002 第6.2.1条
| **** | **After the domestic hot water supply system is installed and before pipe insulation, a hydrostatic test shall be performed.** The test pressure shall comply with the design requirements. Where not specified in the design, the test pressure shall be the working pressure at the highest point of the system plus 0.1 MPa, and the test pressure at the highest point of the system shall not be less than 0.3 MPa. |