These pictures display one of many tied universal expansion joints in a large order of expansion joints designed by U.S. Bellows, Inc. for a local engineering and construction company. These expansion joints weigh 1,600 lb. each and are 10″ in diameter. They are designed for 611 PSIG and temperatures up to 180°F. These expansion joints are fabricated from 321 carbon steel pipe, tie rods and 300 lb. RF weld neck flanges. The bellows longitudinal seams were 100% x-rayed and the complete assembly was hydro-tested to 917 PSIG to ensure a quality product and performance. The units were shipped with the mating flanges bolted to the end of the assembly.

Upcoming Live Webinar
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Variable Spring Support Design, Size Selection, Installation & Maintenance Webinar
Date: Thursday, June 1, 2023 - Register for 10:00 am OR 2:00 pm
*Note: Time Zone is CDT * Central Daylight Savings Time / GMT -5h
Live Webinars are 1 PE/PDH Credit for TX Professional Engineers
This Webinar will focus on the different types of variable spring supports and big ton variable spring supports. Learn about the special features available, in addition to the design of a variable support. View how the different coil configurations produce a unique response to an applied load and see how a spring assembly is loaded. Discover the basic steps in selecting a hanger design and the step-by-step process used to size a spring for your application. Learn about the different attachments, testing, and installation and maintenance procedures. View examples of failed supports provided by our Field Service Division and learn why they failed and how to prevent it. Gain knowledge of the valuable tips used when deciding to replace or re-calibrate a variable spring support, as well as adjustments, shutdown, and isolation procedures.
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Online Course
Expansion Joint Application and Design
Our Expansion Joint course was developed for the following disciplines…
- Piping system designers that may decide to use expansion joints
- Expansion joint designers use the information provided by piping system designers to determine the best design to meet the requirements.
- Designers that use modern software systems to evaluate different options
- Engineers / Managers: field, maintenance, process, operations, construction, surveyors
*This online course is approved for 8 hrs. P.E. Credits
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