客車車体侧壁一般是由上下弦带和位于两者之間的窗間壁組成,側壁結构包括有水平方向和垂直方向的杆件以及焊在該杆件上的鋼制包板,并认为此包板也参与承載。无論是車体侧壁表面的美观或是侧壁的强度,均与包板焊接以后的侧壁結构是否保持平整有关。 The side wall of the bus body is generally composed of upper and lower chord belts and a window between the two walls, the side wall structure includes horizontal and vertical rod members and steel clad plates welded to the rod members, Package board is also involved in carrying. Both the appearance of the side wall of the car body or the strength of the side wall are related to whether the side wall structure after the welding of the package plate is flat or not.