Typically, clamshells cover a narrow range of pipe diameters 4″ – 6″ below its actual size. I.e. a 16″ clamshell will mount down to a 10″ OD Pipe. They can produce quick and dependable severing and beveling of in-line tubes and pipes. The size selection should be kept as close as possible to the pipe OD to give the most accurate finish.
The clamshell works like a rotary lathe, with two tools/bits rotating around the OD of the pipe being drawn inwards to the pipe center on each pass. This operation allows for cutting and beveling in a single operation under certain circumstances. We can complete square cutting, beveling (including compound), and counterboring finishes with this tool. Pipeline cutting and beveling with this equipment delivers the best possible solution.