 In the 1920s, company engineers developed the coated welding rod which they used in manufacturing until 1965, as well as the world’s first fully automated automobile frame factory, with the capability of making a frame every eight seconds, until 1958, the first arc-welded, high-pressure vessel used to refine oil, which the company produced until 1963, and oil supply line pipes, until 1972.In 1933, the company used the process of fusing glass to steel to make a large single-piece glass-lined brewery tank.Over the next 32 years, they made more than 11,000 glass-lined tanks.