U.S. Bellows, Inc. Designed and Fabricated Expansion Joints that Required Helium Leak Testing (PT&P Ref #87658-A1, SR) 10/04/2006
This order required custom engineering to design and manufacture these expansion joints due to their critical service condition requirements. PT&P manufactured and tested these expansion joints to the customer specifications, EJMA Standards and US Bellows Quality Standards.
Design Condition: 176 PSIG at 500˚F .5 Axial Extension and 1.5 Axial Compression 18" 304 Stainless Steel Expansion Joints with Special Designed and Machined Flange Faces with a Specially Designed Gasket Groove Special Customer Welding Requirements to A.W.S. Standards Critical Spring Rate Requirements Stringent Testing Requirements: The Bellows Longitudinal Seams were 100% X-Rayed and Dye-Penetrant Examined. Each Expansion Joint was Helium Leak Tested to a Leak Rate of 1 x 10 ֿ 7
Design Condition: 176 PSIG at 500˚F 
by FAX: (713) 731-8640