According to the data of Pacific Auto, the inner diameter of automobile heating water pipe depends on the design requirements of different automobile manufacturers and models. For small cars, the inner diameter of the automobile heating water pipe is usually between 16- 18mm, while for large SUVs or commercial vehicles, the inner diameter may reach 20-25mm.
The inner diameter of automobile heating water pipe will be affected by many aspects, so it is necessary to consider many factors to determine the best design scheme. For car owners, it is more important to maintain and overhaul the car regularly to ensure that the heating system can work normally and create a comfortable driving environment for drivers.