管 材管道内径D（mm）允许渗水量m3/24hkmL/30minm混凝土管、钢筋混凝土管、陶 管、20017.600.36730021.620.45040025.000.52150027.950.58260030.600.63870033.000.68880035.350.73690037.500.781100039.520.823110041.450.864120043.300.902130045.000.938140046.700.973150048.401.008160050.001.042170051.501.072180053.001.100190054.481.135200055.901.165D2000Q1.25D1/2无压力管道严密性试验允许渗水量