Login English Home About Us Products Services Resources Contact Us Metal Expansion Joints For over 100 years, Badger has been a leading manufacturer of metal bellows expansion joints and services Home Products Metal Expansion Joints From hundreds of penetration boiler seals to a highly-engineered, refractory lined metal expansion joint for catalytic cracking in a refinery, Badger Industries has experience with diverse installations and severe service applications. Our metal expansion joints are designed to the latest EJMA standards and range from 2” to 240” diameter for round designs and any practical size for rectangular designs; single-ply, multi-ply, root rings, equalizer rings, and toroid bellows designs are also available. Bellows material varies depending on application requirements, but austenitic stainless steels and nickel alloys are the most common materials used. The bellows element, a thin-walled corrugated membrane, is the most basic component of a metal expansion joint and provides flexibility in a piping system while containing pressure and media. Expansion joints may contain one or more bellows and are frequently designed with anchors and pipe alignment guides to prevent bowing and buckling in a piping system. Metal expansion joints fall into (2) different basic categories; unrestrained assemblies and restrained assemblies. Unrestrained expansion joints are not capable of restraining pressure thrust in a system. Therefore, pressure thrust must be contained using main anchors or equipment. Restrained expansion joints use tie rods, hinges, and gimbal attachments to contain pressure thrust, but still require intermediate anchors to withstand the spring force generated when the assembly is deflected. Related Downloads: Badger's Capabilities & Products Metal Expansion Joints Single Expansion Joints Double Expansion Joints Universal Expansion Joints Pressure Balanced Expansion Joints Hinged Expansion Joints Gimbal Expansion Joints Toroidal Expansion Joints Expansion Joints for Heat Exchangers Metal Penetration Seals for HRSG boilers Visit Badger Industries Contact Badger Industries - United States For sales in the United States, please contact: 100 Badger Drive - Zelienople, PA 16063 Phone: (724) 452 4500 Fax: (724) 452 0802 sales@badgerind.com Hours: M-F 8am - 5pm Contact Badger Industries - China For sales in China, please contact: 289 Wujin Rd., Haitai Time Tower, Suite 1602 - Shanghai, China 200080 Phone: +86 (0) 21 63096008 Fax: +86 (0) 21 63099668 china@badgerind.com Hours: M-F 8am - 5pm Quick Links: Home About Products Services Our Customers Industries Contact Us © Copyright 2020 Badger Industries. All Rights Reserved.