少妇高潮太爽了在线观-少妇高潮无套内谢-少妇饥渴放荡-少妇饥渴偷-少妇饥渴偷公乱40-少妇激情aⅴ一区二区

These series of pumps are single-stage single-suction cantilever centrifugal pump for transmission of clean water and liquid without corrosive, designed and manufactured in accordance with the international standard ISO2858. The series include 34 basic models and 242 specifications acquired by cutting impeller and changing speed. The shaft seals have two kind of soft gland packing and mechanical sea. The main parts of the pump are generally made of grey cast iron and high-grade carbon steel, can also be used stainless steel shaft and copper impeller depending on the application. The IS pump can be used for transporting medium at temperature below 80℃, the medium temperature of the IH series up to 130℃.