Three screw pumps are the largest class of multiple screw pumps in service today. They are also used in refinery processes for high temperature viscous products such as asphalt, vacuum tower bottoms and residual fuel oils.
Three screw pumps are commonly used for:
machinery lubrication
hydraulic elevators
fuel oil transport and burner service
powering hydraulic machinery

Three-Screw Pump is a positive displacement pump, and has the remarkable advantages such as:
simple structure, small volume, being allowed to rotate at high speed, stability and high efficiency, etc. By using the principle of screw meshing and relying on the mutual meshing of rotating screws in pump block, the three-screw pump sucks the medium conveyed and seals it in the meshing cavity, then pushes it to the discharge port along the axial direction of screws at uniform speed, and forms stable pressure at the discharge port.

The 3QGB series heat-preservation high-viscosity bitumen three-screw pumps developed by Sinoroader after many years of research optimize the cooperation between screw and pump block, and between driving screw and driven screw based on three-screw pump, in order to realize the delivery og high-temperature and high-viscosity media. Sinoroader bitumen three-screw pumps  is mainly used for asphalt mixing plant. Can be designed according to the customer's situation, Stainless steel gear pump, It has a complete selection of sliding pumps. High viscosity insulation pump, Residual pump is compact, long life, Beautiful appearance.