The benefits of continuously welded crane rails are considerable in a steel mill or high use environment. Crane rail is typically installed in 20 or 30-foot sections with splices at the joints. These joints can develop gaps through expansion and contraction, the cause impact stress on the wheel, rail, and structures when the crane runs over the gap. These crane rails may be welded into lengths of 300 meters or more with no expansion joint. The rail cross-sections are large, and the metallurgy, with high carbon and manganese content, make welding difficult.