Twin-screw pump W series, twin-screw pump V series, twin-screw pump HPW series, twin-screw pump HW series: used to transport various viscosities of petroleum, refined petroleum products such as gasoline, diesel, kerosene, fuel, heavy oil, asphalt, etc. as well as various liquids in the petroleum refining process.
Single-screw pump EH series, single-screw pump ER series, single-screw pump G series: used to transport high-viscosity petroleum, as well as refined petroleum products such as heavy oil, asphalt, etc.. Liquids are allowed to contain gas, water, solid particles, solid fibers, etc.
Three-screw pump SN series, three-screw pump SM series, three-screw pump 3G series: used to transport oil of various viscosities, as well as  refined petroleum products such as heavy oil, asphalt, etc. Liquids are not allowed to contain gas, water, solid particles, solid fibers, etc.