Usbellows logo.png
EJMA Logo

US Bellows is a Standards Subscriber | Exp: Dec 31, 2026 | See ejma.org to check verification process
Celebrating over 20 years of EJMA membership

78″ Dia. Single Expansion Joints Designed for an Internal Reactor

February 2, 2014

78" Dia. Single Expansion Joints Designed for an Internal Reactor

Type:  Single Expansion Joint
Size:  59-7/15″ to 78-8/8″ and are 41-5/16″ long Diameter
Material:  800H, A-240 type 304H stainless steel weld ends
Design  lateral movement of 0.25″, axial movement of 2.64″ and 15 psig at 1231°F
Testing:  100% X-Rayed | Dye-penetrant

These single expansion joints are custom designed for an internal reactor in a propylene process unit. They are fabricated with Incoloy 800H bellows and A-240 type 304H stainless steel weld ends. The expansion joints range in diameter from 59-7/15″ to 78-8/8″ and are 41-5/16″ long. They were designed for a lateral movement of 0.25″, axial movement of 2.64″ and 15 psig at 1231°F. PMI, x-ray and dye penetration tests were performed prior to shipment.