免费特黄一区二区三区视频一_欧美色啪_欧美XXXXX俄罗斯乱妇_国模娜娜一区二区三区_免费观看的A在线播放_成a人v在线观看视频_2019天天爱天天拍_麻花豆传媒剧国产MV在线上播放_日本巨大超乳在线播放_凹凸18禁在线视频_在线视频一区二区三区四区_国产精品自在拍在线播放_色图片蜜桃_教父1快播_青青久久视频在线视频观看2019_国产睡熟迷奷系列精品_啦啦啦免费高清视频在线观看_暖暖日本免费观看完整动漫_国产欧美一区二区三区免费视频_风车动漫无删减在线观看高清

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.