Cooling system pipeline is assembled to automobile engine or the connection area between engine and radiator, heater, expansion tank, which is mainly for antifreeze fluid transmitting to dissipate the heat of engine. According to the different assembly location, the pipeline can be divided into radiator inlet and outlet pipe, heater inlet and outlet pipe, overflow pipe, etc. With the development of new resource vehicles, pipes related to battery cooling system is also included in this kind of pipeline. The material of this kind of pipes commonly is EPDM. Owing to the application of aramid knitting structure, the pipes are of excellent high and low temperature resistance performance, freeze resistance performance and fatigue resistance performance.