Contact Us: +1 (281) 241-9418 Toll Free: (855) 591-0906
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U.S. Bellows Company Profile

U.S. Bellows, Inc. has been designing and manufacturing engineered pipe expansion joints for the industry since the 1960s. Today, U.S. Bellows consists of manufacturing resources of RM Engineered Products of Ladson, SC (acquired in 1995) and Ketema - U.S. Bellows, Inc. of San Diego, California (acquired in 1997).

Membership / Certification

U.S. Bellows is a proud member of the Expansion Joint Manufacturer's Association (EJMA), since 2002 with Representation on both the technical and management committees.

We also hold a current ASME Boiler and Pressure Vessel Code.  

QA/QC Approval

General Electric / Stewart and Stevenson

U.S. Bellows, Inc. has great deal of experience designing and manufacturing engineered pipe expansion joints of all types including:

Thin Wall

Elbow Pressure Balanced
In-line Pressure Balanced
Externally Pressurized
Thick Wall (Flanged & Flued)

Additionally, U.S. Bellows has focused expertise in the design and engineering of pipe expansion joint products for particular vertical markets and applications. These applications include the following:

Fossil Fuel Power Plants
District Energy
Gas Turbines
Steam Distribution
Geothermal Power Plants
Chemical & Petrochemical
Heat Exchangers
FCC Units
Liquefied Natural Gas (LNG) Service
Stationary Engine Exhaust
Municipal Water Districts
Waste Water Treatment
Solid Waste Incineration
Environmental Applications
HVAC, Building Heating & Cooling Systems
Research & Development
Pulp & Paper
Aerospace Turbo Engine Exhaust
Truck Exhaust
Heavy Metal
Marine Piping & Exhaust
U.S. Navy
Furnace Sealing Bags 

U.S. Bellows Manufacturing Facility

Panoramic View of the U.S. Bellows Facility

ENGINEERING & DESIGN: Engineering and design is done per EJMA equations as well as per the latest revisions of the ASME B31.3, ASME B31.1, and ASME Section 8, Division 1. Design calculations are performed using design software developed in-house and calculations are further checked using hand calculations. U.S. Bellows also has full in-house finite element analysis capabilities and we often use this methodology to prove designs. U.S. Bellows offers 24-hour service and we have often provided emergency field service during installation or plant shutdowns. Our history in pipe expansion joints goes back a long way: Our founder first wrote a fortran program to design expansion according to Koppe and Sair's early paper on pipe expansion joint design circa 1975.

QUALITY CONTROL: Additionally, U.S. Bellows does extensive physical testing to prove designs. Each bellows and pipe expansion joint unit goes through in-process quality control using a system of travelers. Final in-house inspection and testing is performed prior to shipping, based on customer requirements. U.S. Bellows has performed a variety of tests on pipe expansion joints ranging from X-Ray tests and Hydrotests to Helium Leak tests (using a mass spectrometer). Our manufacturing shop also has ASME Section VIII CODE certification for jobs requiring CODE certification.

FACILITIES: U.S. Bellows is located on a 35 acre property in Houston, Texas, USA, within more than 450,000 square feet of covered shop space (approximately 10 acres). Our proximity the Houston Ship Channel, one of the largest ports in the United States and in the world, makes us a convenient supplier to projects around the world. U.S. Bellows recently completed the construction of a 100,000 square foot expansion to our manufacturing plant and we continue to grow. We invite you to visit our manufacturing facility and give us the opportunity to demonstrate our engineering and manufacturing capabilities. 

Send us your pipe expansion joint inquiries via e-mail at or via fax at +1-713-731-8640. Please contact us for further discussions. We look forward to doing business with you.

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Contact Us: +1 (281) 241-9418 Toll Free: (855) 591-0906 Fax: +1 (713) 731-8640
Our Parent Company: Piping Technology Pipe Supports, Pipe Clamps, Pipe Hardware & Insulated Pipe Shoes
Fellow Subsidiaries: Sweco Fab: ASME Vessels, Pig Launchers, Duct Work, Strainers & Spectacle Blinds
 Pipe Shields: Pre-Insulated Pipe Supports, Slides, Guides & Anchors

Fronek Anchor/Darling
: Snubbers, Sway Struts & Sway Braces

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