U.S. Bellows custom designed universal expansion joints for an oil refinery in the Philippines. The bellows and liner are fabricated from 304 stainless steel and the cover, tie rods, flanges and pipe spool are carbon steel. The sizes are 18″ dia. x 60.5″ long, 28″ dia. x 80.75″ and 36″ dia. x 40″ long. The units are designed with movement indicators and for 50 psig at 655°F. They are capable of 0.675″ compression, 0.375″ lateral and 1″ angular. The bellows and pipes were 100% x-rayed, PMI examined and hydro-tested.
Universal Expansion Joints > Blog Articles
U.S. Bellows, Inc. custom designed and fabricated tied universal expansion joints for a vapor line used for rail car loading at the Houston ship channel. The expansion joints are 12″ dia. x 40″ O.A.L. The bellows are fabricated from 304 stainless steel and the flanges and limit rods are carbon steel. They are designed for 100°F at 1 psig and capable of 5″ axial movement. Each unit was 100% dye penetrant tested and soap and air tested prior to shipment.
U.S. Bellows designed and manufactured this universal expansion joint in accordance with ASME section VIII for an oil and gas refinery in Europe. A U2A- form was furnished as part of the units’ documentation. The expansion joint has a 24″ diameter and 103″ overall length. The bellows, liners and covers are fabricated from 316 stainless steel, and the flanges, tie-rods and pipe are carbon steel. The unit is designed for an operating temperature of 181°F at 101 psig and 1″ axial movement with a 3″ lateral offset. The bellows and pipe longitudinal weld seams were x-rayed, dye-penetrant and hydro- tested prior to shipment.
62″ Fabric, 42″ Hinged and 42″ Tied Universal Expansion Joints and Duct Work Designed for an Acid Plant
U.S. Bellows custom designed two 42″ tied universal expansion joints, a 42″ hinged expansion joint and a 62″ fabric expansion joint in ductwork for an acid plant in Louisiana. The assemblies had flanged and flued head bellows fabricated from 304H stainless steel. The rest of the assemblies were made from carbon steel with operating temperatures of 700°F at 10 psig. The expansion joints were dye penetrant and x-ray tested prior to shipment.
U.S. Bellows custom designed tied universal expansion joints with 304 stainless steel bellows from 2″ to 18″ diameter for a chemical plant in Texas. The expansion joints are designed for 3″ lateral movement at 122°F and 100 psig. The expansion joints were hydro-tested at 150 psig and delivered in six weeks.
These universal metallic expansion joints were custom designed for a pipe line in a bioengergy plant. They range from 20″ to 30″ in diameter, and are designed for 2″ lateral movement with a 1,362 lb/in. spring rate. The expansion joints are fabricated entirely from 304 stainless steel and designed for 250°F and 30 psig. Each unit was 100% dye penetrant examined and air tested prior to shipment.
This tied universal expansion joint is 36″ Dia. x 47-3/8″ OAL and is fabricated from carbon steel with stainless steel bellows. It is designed for 1/2″ lateral movement, 3,116 lb./in. lateral spring rate at 200°F and 100 psig. The expansion joint was dye penetrant examined and hydrotested prior to shipment.
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.
This custom designed universal expansion joint is to be used for a gas turbine application. Dimensions are 30” DIA x 90” OAL and materials used for fabrication were 321 ss bellows, liners, and carbon steel pipes. This expansion joint was 100% x-ray, dye-penetrant, and hydro tested. Operating conditions were 96 PSIG at 550°F for 2″ lateral and 3/8” axial compression.
This 118″ diameter tied universal expansion joint was designed for steam service in a power plant in Alaska. The expansion joint duct, tie rods and cover are fabricated from carbon steel with 304 stainless steel bellows and liner. The overall length is 225″. It was designed for 250°F at 7.25 PSIG and 3.52″ of lateral movement. Dye-penetrant testing, spot x-ray and an air and soap test were performed on the universal expansion joint assembly prior to shipping.