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U.S. Bellows, Inc. Designed and Fabricated Expansion Joints that Required Helium Leak Testing

October 4, 2006
U.S. Bellows, Inc. Designed and Fabricated Expansion Joints that Required Helium Leak Testing
U.S. Bellows, Inc. Designed and Fabricated Expansion Joints that Required Helium Leak Testing
U.S. Bellows, Inc. Designed and Fabricated Expansion Joints that Required Helium Leak Testing

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
0.5 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
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