U.S. Bellows, Inc. is a worldwide manufacturer of metallic and fabric expansion joints. U.S. Bellows, Inc., a subsidiary of l ... eading pipe supports and spring hanger manufacturer Piping Technology & Products, offers a variety of expansion joints including thin-wall metallic expansion joints, fabric expansion joints, refractory lined expansion joints for FCC application, slip-type expansion joints, externally pressurized expansion joints and elbow pressure balanced expansion joints. U.S. Bellows, Inc. has been a member of the Expansion Joint Manufacturer's Association (EJMA) since 2002 and provides engineering and design 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. read more