U.S. Bellows custom designed 14" dia. and 84" dia. single expansion joints for a pipe line in an utility plant in Colorado. The bellows are 304 stainless steel and carbon steel was used for the flanges and tie rods. The assemblies were designed for a spring rate of 2,530 lb/in., 1" axial movement at 300°F and 37 psig. The assemblies were dye penetrant examined and air tested with a delivery of 12 weeks.
