December 9, 2012
US Bellows fabricated this 28″ dia., 109″ long universal expansion joint with 1″ thick AA-22 abrasion-resistant refractory lining and pantographic linkage for an FCC unit in an oil refinery. The entire assembly is fabricated from 304H stainless steel with carbon steel pantographs. This expansion joint has two-ply testable bellows with wire mesh strip between the plies. It is designed for an axial movement of 5″, a lateral movement of 5-1/2″ at 1425°F and 45 psig. This unit was 100% dye penetrant tested, all pressure retaining welds were 100% radiographed and the unit was pneumatic tested prior to shipping to Oklahoma.
