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U.S. Bellows, Inc. Custom Designs and Fabricates a 60 dia. Double Hinged Refractory Lined Expansion Joint for a Chemical Refinery in Michigan (PT&P Ref# 70510-A1,DS) 02/27/04

Expansion joint assembly during fabrication
Expansion joint assembly ready for shipment

U.S. Bellows, Inc. specially designed and manufactured a double hinged refractory lined expansion joint for a chemical refinery in Michigan. This expansion joint with an overall length of 40'-0" has a 4" thick refractory lining installed per UOP specifications. It also consists of testable two plies SB-443/Inco 625LCF bellows, 5/8" thick, A516-70 mitered elbows, 5/8" thick, A516-70 spool, A240-304 liners, A516-70 hinges, A193, GR 7 tie rods, and A516-70 lugs.

This expansion joint is designed for 50 PSIG and 1440°F with 3" of lateral movement per B31.3 and EJMA standards. To ensure quality, 100% X-Ray and 100% dye-penetration tests were performed on the bellows after forming. A pneumatic test at 75 PSIG was conducted on the expansion joint assembly prior to shipping.




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