Reinforcement joint for side walls of buses for example has one joint shell for each joint at joining points of square tubes which make up framework

摘要

At the joints (10) for window or door opening structures for example one joint shell (13) is used for each one joint (10) and the shell is only welded to the side walls of the square edge tubes (11, 12) which make up the frame. Free cuts (20) can be formed in the cover plates (15, 15') to allow unimpeded welding seams (17).