Bellows Systems, Inc. (BSI) is a Houston, Texas based company and a leading manufacturer of metal bellows, expansion joints and exhaust systems. BSI specializes in multi-ply, long life expansion joints for the Oil and Gas Transmission, Petrochemical plants and Refineries, Power Generation, Automotive, Aerospace and Defense and many more industries. By supplying a complete line of metal bellows, expansion joints and exhaust manifold systems, BSI ensures the highest level of quality and