Twenty-four single hinged expansion joint were custom designed for a chemical plant. Eight are 16″ dia., four are 12″ dia., twelve are 6″ dia., and they range in length from 14″ to 16″. The bellows are fabricated from 304 stainless steel and the rest is carbon steel. The 16″ dia. joints are designed for 2° angular movement at 300°F and 150 psig. The 12″ dia. joints are designed for 1 deg. Angular movement at 300°F and 400 psig. The 6″ dia. joints are designed for 1° angular movement at 300°F and 650 psig. All expansion joints were dye penetrant examined and hydro-tested prior to shipment