US Bellows is a Standards Subscriber | Exp: Dec 31, 2026 | See ejma.org to check verification process
Celebrating over 20 years of EJMA membership
U.S. Bellows provides custom designed expansion joints in duct work and fabricated duct work assemblies. The assemblies may include fabricated elbows, tees, and straight sections of duct work, in carbon steel or stainless steel, and in diameters of 42″ or larger. The duct sections can include fabric or metallic expansion joints and can be rectangular or round. U.S. Bellows can also provide specialized pipe supports and spring hangers for large diameter duct work. Additionally, we offer complete pipe stress analysis of your duct systems using CAESAR II software.
2/16/22: 26′-10″ Long Universal Expansion Joint & Ductwork for a Chemical Plant
4/26/21: U.S. Bellows Designed an Expansion Joint & Duct Work Assembly during a Plant Turnaround
6/7/06: 60″ Ductwork with Spring Supports, Snubbers, a Support Cradle and a Fabric Expansion Joint
| Pressure | 3 p.s.i (Max), Positive Pressure only | ||||
| Temperature | 400 ° F (Max) -- 40 ° F (Min) | ||||
| Movements | Flange - to - Flange Dimension | ||||
| 10" | 12" | 14" | 16" | 18" | |
| Axial Compression | ½" | 1" | 1½" | 2½" | 3" |
| Axial Extension | ½" | ½" | ½" | ½" | ½" |
| Lateral Offset | ¼" | ½" | ¾" | 1" | 1" |
| Pressure | 3 p.s.i (Max) 27" H 2 O (Vacuum Max) | ||||
| Temperature | 600 ° F (Max), -- 40 ° F (Min) specify | ||||
| Movements | Flange - to - Flange Dimension | ||||
| 10" | 12" | 14" | 16" | 18" | |
| Axial Compression | ½" | ¾" | 1¼" | 1½" | 2" |
| Axial Extension | ½" | ½" | ½" | ½" | ½" |
| Lateral Offset | ¼" | 3/8" | |||
"Product on time (expedited), high quality, and documentation was well in order.”
US Bellows Metal Expansion Joints
Operating Plant - May 2025
"Got my Bellows back quick.”
US Bellows Metal Expansion Joints
Operating Plant - May 2025
"My impression of your technical and production engagement is very positive."
Expansion Joints Metal Bellows - January 2021
"I sincerely thank all of you for your efforts to date and encourage all of you to continue the excellent performance and commitment to the projects."
Single Expansion Joint - 2020
"Thank you very much for the excellent work you and your associates at PTP/USB provided on my order..."
High Temperature Insulated Supports - December 2021
"As a Mechanical Engineer, I like the products & complimentary webinars Piping Technology & Products offers."
Expansion Joints Metal Bellows - September 2022
"Work is always completed when they say that it will be completed."
Expansion Joints Metal Bellows - November 2022
"As always, I appreciate the prompt support provided by PT&P team and I know, I can count on it every time."
Expansion Joints Metal Bellows - November 2022
"US Bellows engineer has been really helpful in ensuring that we get this order expedited and that we make sure to iron out all the details to ensure we get the best product."
Expansion Joints Metal Bellows - March 2023
"Responsive team!"
Expansion Joints Metal Bellows - March 2023
"I cannot be happier to deal with the engineers at PTP. The quote process has been extremely easy...
Expansion Joints - April 2023
"The US Bellows team was very professional and help guide me through the process."
Expansion Joints Metal Bellows - April 2024
