U.S. Bellows Designed and Fabricated Single Tied Metallic Expansion Joints with Two-Ply Alloy Bellows December 27, 2006 Details: Left: 24″ Diameter, Right: 32″ Diameter 100 % X-Rayed Bellows and Flanges 100% Dye-Penetrant Tested Hydro-tested at 365 PSIG Design Conditions: Pressure: 243 PSIG Temperature: 108°F Axial Compression: 0.020″ Lateral Movement: 0.200″ Axial Spring Rate: 13,320 lb/in Lateral Spring Rate: 121,202 lb/in