A4V is used in metallurgical industry (blast furnace, steel rolling, electric furnace and other hydraulic stations in major steel mills), scrap crushing and packaging equipment; A10V is widely used in construction machinery, concrete conveyor, rotary excavator, tunnel drilling machine, coal mine slag suction truck, petrochemical equipment in the pipe protection machine; A7V is mainly used in scrap crushing and packing, concrete mixing truck, pile driver, and blast furnace equipment in steel mills, such as open door equipment; A2F is mainly used in metallurgy, forging, mining and lifting machinery, which requires large torque and can withstand radial load.