U.S. Bellows, Inc. custom designed eighty-one universal expansion joints for an oil refinery in California. The bellows are fabricated from 304 stainless steel, and the pipe and flanges are carbon steel. The units range from 1" to 8" in diameter and are designed for a spring rate of 20 lb./in. The expansion joints are designed for 140°F at 25 psig and are capable of 1" axial compression. Each unit was hydro-tested prior to shipment.
