May — 2013 — The Expansion Joints Blog


Archive for May, 2013

Types of Metallic Expansion Joints

May 20th, 2013 Comments off

U.S. Bellows offers all types of metallic expansion joints. Each type has advantages and limitations that can provide flexibility, load reduction, structural integrity and reliability required in a piping system.
Metal expansion joints can withstand the design temperatures and pressures, as well as provide the capacity necessary to absorb thermal growth of the piping system. The thermal movement required can be axial, lateral or angular. In some cases, the pressure thrust of an expansion joint must be restrained by the use of tie rods, hinges or a gimbal while allowing the bellows to move through its design deflections.

Learn more about the different types of metallic expansion joints:

Single Expansion Joint Universal Expansion Joint Hinged Expansion Joint

Expansion Joints


Expansion Joints


Expansion Joints


Elbow Pressure Balanced Expansion Joint In-line Pressure Balanced Expansion Joint
Elbow Pressure Balanced Expansion Joints In-line Pressure Balanced Expansion Joints Externally Pressurized Expansion Joints


Single Expansion Joint Single Expansion Joint Universal Expansion Joint


Expansion Joints


Expansion Joints


Expansion Joints


Universal Expansion Joint


Expansion Joints

Thick-wall (Flanged & Flued)

Expansion Joints

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Expansion Joint Photo Gallery

May 20th, 2013 Comments off
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64″ Dia. Elbow Pressure Balanced Expansion Joint Designed for an Exhaust Duct

May 12th, 2013 Comments off

64" Dia. Elbow Pressure Balanced Expansion Joint Designed for an Exhaust Duct

U.S. Bellows designed and manufactured a 64” diameter custom elbow pressure balanced expansion joint for an exhaust duct in a power plant in Alberta, Canada. It is 386” in overall length and is fabricated from carbon steel with 321 stainless steel bellows. This expansion joint is designed for 1-1/8” axial movement, ½” lateral movement at 482°F and 174 psig. Tests performed on the unit include 100% dye penetrant, x-ray, and ultrasonic on pressure bearing welds. The unit was also hydrotested at 291 psig prior to shipment.


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