U.S. Bellows, Inc. fabricated this 28" dia., 109" long universal expansion joint with 1" thick AA-22 abrasion resistant refractory lining and pantographic linkage for a 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.
