ISG series single stage single suction vertical pipeline centrifugal pump is the new high efficiency and energy-saving product which substitute SG series pipeline centrifugal pump and IS Series centrifugal pump and D series multistage centrifugal pump. It is manufactured as ISO2858 and JB/ T6878.2-93 standard. The capacity range for ISG series pump is 1.5^ 1600m3/ h and head range is 5^ 125m at the base of basic type and capacity type and trim impeller type. IRG Series hot water pump and IHG Series chemical industry pump and YG series oil pump with the same parameter and different material of fluid parts are manufactured for different liquid and temperature. So the pumps are widely used in many conditions to substitute normal centrifugal pumps