The side rail of the bus body is made of galvanized sheet, that is, the two ends of the sheet are stretched and welded to the skeleton of the front and rear walls, and the flatness of the middle surface is ensured to be good. At this time, the flatness of the welding parts at both ends is poor, which needs to be filled with putty.

The most intuitive display of the sidebar is the truck. There are strip fences on the side and back of the truck, and the side fences are also called side fences. The height of truck fender stipulates that the height of container fender of trailer and two-axle truck shall not exceed 600 mm.