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U.S Bellows, Inc. Designs and Fabricates Three Elbow Pressure-Balanced Expansion Joints for a Power Station in Canada 7/26/02  (PT&P Ref# 64028)

Elbow Pressure-Balanced Expansion Joints

U.S Bellows, Inc, recently designed and fabricated three elbow pressure balanced expansion joints for a power station in Canada.

These joints are designed at 150 PSIG and 450ºF to allow lateral and axial movements in a 42" steam line. Expansion joints were designed and fabricated per EJMA and B31.1 code. The expansion joints were hydro-tested at 225 PSIG and 75ºF. In order to detect any leaks in the weld, prior to and following forming, bellows long seam welds and attachment welds were 100% dye-penetrant tested.





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