The load on the trailer is borne entirely by itself, with the locomotive only hooked. The locomotive does not need to bear the trailer load, but provides the power to help the trailer overcome the road frictional resistance. Trailer is mainly used for terminals, factories, ports and other areas of transport.
The refueling vehicle is a vehicle that is loaded with oil and oil. The fuel tanker is equipped with a tanker that can be moved to the vehicle, and supplies the fuel to the oil equipment, such as vehicles, agricultural machinery, boilers, construction machinery and hotels.
In accordance with the tank material classification: in accordance with the different uses can be used, carbon steel, stainless steel, lined rotomolding, glass steel, plastic cans (polyethylene. Polypropylene), aluminum and other materials made of tank. Tanker tank shape: divided into oval cans, round cans, square round tank.