国产免费高潮白浆二区三区_久久国产大片_午夜人性色福利无码视频在线观看_www.性视频_av综合网站_成人A级毛片免费观看AV

These series are multi-stage single-suction sectional centrifugal pump for pumping clean water or other liquids whose physicochemical property is similar to that of clean water. The D series is suited for water supply and drainage of mining, industrial and urban areas at temperature below 80℃. The DG series boiler feed pump is designed to fit internal technology reformation of boiler. The DG series is particularly suitable for high-pressure water supply applications such as boilers, industrial and mining enterprises, urban areas at temperature below 110℃.
The series feature good rigidity structure, smooth operation, long service life, high efficiency and saving energy.