Mining high-pressure hose low-pressure test: The test pressure is 1 MPA, hold the pressure for 5 minutes, and the test medium is water.
If no liquid leakage is found in the hose body, it is qualified. Mining high-pressure hose high-pressure test: The national standard requires the minimum burst pressure to be 2 times the working pressure. Coal safety audit standard: The burst pressure must be more than 4 times the working pressure, hold the pressure for 3 minutes. The test medium is water. If no bursting occurs, it is qualified. Additionally, during the high-pressure burst test, pay attention to the surrounding environment, and the pressure testing equipment should be placed in an enclosed area. Unauthorized personnel movement is prohibited to avoid unnecessary injuries.
