GB 50242-2002 第4.5.1条
| **** | After the hot water supply system is installed and before the pipes are insulated, a hydrostatic test shall be conducted. The test pressure shall comply with the design requirements. If not specified in the design, the hydrostatic test pressure for the hot water supply system 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. |