US Bellows is a manufacturer of metal bellows, fabric expansion joints, and metallic expansion joints including refractory lined, hinged, gimbal, slip-type, in-line pressure balanced, and elbow pressure balanced expansion joints.

It was acquired by Piping Technology and Products in 1997 from Ketema-U.S. Bellows, Inc.[1] and is now located in Houston, Texas.

U.S. Bellows, Inc. provides a variety of expansion joints for piping and duct systems[2] and has been a member of the Expansion Joint Manufacturers Association, Inc. since 2002.

[3] In December 2011, U.S. Bellows acquired all bellows assets of the former Lortz Manufacturing companies, doubling its manufacturing capabilities.

[4] It is a privately held company[5] owned by Durga D. Agrawal.