HDLR series single-stage siphon channel centrifugal pump adopts the performance parameters of IS centrifugal pump and IS designed by clever combination on the basis of general vertical pump. At the same time, according to the different operating temperature and medium, it IS derived from ISG type for hot water, high temperature, corrosive chemical pump and oil pump.This series of products have the advantages of high efficiency and energy saving, low noise and reliable performance.In line with the new mechanical department JB/T53058-93 standard requirements.The products are designed and manufactured according to the international ISO2858 standard.