YHCB arc gear pump for conveying the viscosity, the temperature does not exceed 80 ° C in 5-1500cst, excluding non-corrosive solid particles in a variety of liquid. Amines such as gasoline, kerosene, diesel machinery lubricants, liquefied petroleum gas (LPG), acetic acid, diamine, acetic acid and acetic acid methenamine. Is a special energy-efficient gear pump, flow, high pressure and small volume, low noise, self-priming performance, easy installation and maintenance, etc., it is preferred pump tank car modification industry and the ideal of the oil sector,