US Bellows custom designed this single externally pressurized expansion joint for an oil refinery in Saudi Arabia. The bellows are fabricated completely from 316 stainless steel. The expansion joint is 32" in diameter and 61-1/4" in length. It is designed for 8" axial movement and 150 psig at 176°F, with a spring rate of 1096 lb./in. The unit had the stainless steel alloy material PMI examined. It was also dye penetrant examined and hydrotested prior to shipment.
