Tank car, according to their appearance can be divided into: flat tanker, tip tank car, abreast tanker, single bridge tanker, after Shuangqiao tanker, Shuangqiao tanker, double bridge tank truck, light oil tank car, small tanker, a medium-sized tanker, large oil tank car, semi - trailer transport car oil, small triaxial tanker, front double after a single tank car, after the first four four tank car, after the first four eight tank car.