... and hydraulic reclaimation of Yangtze River basin, the Yellow River basin, the Pearl River Delta, the Huaihe River Basin and other rivers, ... , single suction, cantilever and horizontal layout. By the drive type, they have two typical structures: frames type and gear-box type ... and diameter of WN(Q) pumps’ impeller.For the wet end parts, the impeller, volute liner, throatbush and back liner are cast ...