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      Bellows Manufacturers

      Welcome to Triad Bellows
      A leading industrial metal bellows manufacturer and pipe expansion joint supplier. We take pride in providing high-grade standard and custom bellows, expansion joints, flex joints and other OEM solutions for our customers. When you are dealing with movement in your piping system due to thermal expansion, our various product configurations and custom services will help you meet your industrial challenges head on. We supply countless industries with the standard and custom bellows and expansion joints required to complete every piping job, including the power generation, OEM manufacturing, wastewater, and oil and natural gas sectors

      Custom Metal Bellows Solutions

      Triad Bellows specializes in custom-engineered metal bellows designed to accommodate axial, lateral, and angular movement in complex piping systems. Our engineering team works with your specifications to deliver precision-fit components that meet performance and durability standards in even the most demanding applications. Products include Pipe Expansion Joints, OEM Expansion Joints, and Flexible Connectors. Al Located in Anaheim, California, Triad Bellows manufactures all products in the USA using high-grade materials and quality-controlled processes. We are committed to delivering long-lasting solutions for your piping system needs, backed by fast turnaround times and responsive customer service.

      Our Services

      We also enjoy sharing our passion and knowledge of industrial metal bellows and stainless steel expansion joints with our clients. Our goal is to ensure you have on-demand access to product information and installation instructions when you need it. Our knowledgeable sales engineers are always ready to assist.

      Customized Expansion Joints

      Triad Bellows specializes in the design and fabrication of customized expansion joints engineered to meet the specific performance and dimensional requirements of your piping systems. These joints are built to absorb movements such as axial compression, lateral offset, and angular rotation, helping to protect piping and equipment from the damaging effects of thermal expansion, vibration, and system pressure changes. Every expansion joint is designed to meet or exceed the standards set forth by the Expansion Joint Manufacturers Association (EJMA), ensuring optimal performance and long-term reliability. Triad offers a variety of configurations—including single, universal, and in-line pressure balanced expansion joints—all of which can be custom built to suit exact pressure ratings, temperature limits, and end connections. Whether your application is in power generation, chemical processing, HVAC, or industrial manufacturing, Triad Bellows delivers tailored solutions that integrate seamlessly into your systems while maintaining the highest standards of safety and quality.

      Engineering Services

      Triad Bellows offers a range of specialized engineering and manufacturing services designed to provide flexible, cost-effective solutions for customers with unique or challenging requirements. If original drawings are missing or incomplete, our reverse engineering service allows you to send in a failed expansion joint for full analysis and recreation—complete with a new drawing for your records. For assemblies where the fittings still hold value, our re-building service offers an economical alternative to full replacement. We’ll replace the bellows, clean and re-machine the fittings as needed, and return the unit fully pressure-tested and painted. For more complex applications, our personalized engineered solutions give you direct access to our experienced engineering team, who will help select or design the ideal expansion joint based on your system’s performance requirements. Backing all of this is our in-house custom machining capability, which includes large-diameter machining, custom flange manufacturing, O-ring groove cutting, precision finishing, and weld end fabrication. Whether you’re rebuilding, retrofitting, or designing from scratch, Triad Bellows delivers precision-engineered support tailored to your needs.

      Testing Services

      Triad Bellows produces high-quality bellows and expansion joints for industries in and around the San Diego area. We offer our stainless steel exhaust bellows and expansion joints in a variety of different configurations to suit the needs of our San Diego clients. We have produced stainless steel exhaust bellows and expansion joints for everything from factories and power plants to large ships. You can be assured if we don’t already offer a standard piping product for your industry, we can create one for you. We have supplied our products to many different businesses in different industries.

      Private Brand Services

      Triad Bellows is committed to supporting distributors and OEMs with a full suite of private branding services designed to elevate your professional image and strengthen customer relationships. We understand the effort it takes to build and maintain your brand, which is why we offer custom labeling, blind drop shipping, and fully personalized documentation to help you present a seamless, professional front. Your logo and company information can be applied directly to the expansion joints, packaging materials, and shipping labels. Through our Blind Drop Ship program, only your company’s name appears on all shipping documents—protecting your customer relationships and reinforcing your brand. In addition, we provide personalized EJMA bellows design data sheets and submittal drawings with your logo pre-inserted, eliminating the need for manual edits. Drawings are delivered in ready-to-send PDF format and can include additional technical details upon request. These branding services give you a polished edge in competitive markets while allowing you to rely on Triad’s proven quality and dependable fulfillment.

      Triad Bellows is a metal bellows manufacturer and expansion joint supplier specializing in multi-ply bellows for the ultimate cycle life performance. We also fabricate single-ply metal bellows for less demanding applications.

      What our clients say

      TRIAD HAS CONSISTENTLY & PROFESSIONALLY PROVIDED THE ENGINEERING AND DESIGN INFORMATION NECESSARY TO MEET THE HIGH-PERFORMANCE APPLICATION DEMANDS.
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      Skip
      less than 1 second ago
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      Reliable, timely product deliveries and great interactions.
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      GLOBAL-FLEX
      May 26
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      Triad is a very helpful and reputable company.
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      Mike
      less than 1 second ago
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      This is one company where we can place a PO and forget it, knowing it will ship on time and correctly- that saves me time and money!
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      Jim
      8 days ago
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      Staff is always helpful, knowledgeable and quick to answer any questions we may have!
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      Tracey
      January 31
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      Exceptional service and reliability for 17 years.
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      Mario
      June 9
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      Trustworthy supplier providing high-quality products and timely shipping.
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      Michael Goldstein
      May 25
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      We always receive excellent and fast service from Triad.
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      Gary Latta
      May 19
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      It is always a pleasure working with Pawel and the team. Exceptional engineering, response time, and communication.
      review author image
      Mike
      9 days ago
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      Delivered on time and at a reasonable cost even when we were in a hurry. Thanks!
      review author image
      Dave
      less than 1 second ago
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      Close partner as a supplier.
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      Scott Cote'
      May 13
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      Great working relationships and reliable service over the years.
      review author image
      Matt
      12 days ago
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      Very helpful in determining the correct product for your application. Very pleasant and professional. Quality Product.
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      Ted
      less than 1 second ago
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      Knowledgeable and easy-to-work-with team.
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      Juan Breucop
      May 26
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      Quick RFQ turnaround, competitive pricing, and fantastic quality.
      review author image
      Matt
      16 days ago
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      I had the pleasure to meet the family that operates this business and they were very professional and you could see the passion they have in their products by talking to them. Big on customer service,
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      Victor Mesina
      January 1
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      Triad Bellows goes over and beyond the call of duty. No questions are left unanswered. I would recommend Triad Bellows with no reservations.
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      Jeremy
      less than 1 second ago
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      Friendly and reliable team.
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      Dan
      16 days ago
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      Fantastic group of guys to work with. Always on top of things, shipping complete orders and hitting ship dates. I highly reconmmend Triad Bellows to anyone that is looking for a professional customer service and workmanship.
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      Bruce T
      May 13
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      Reliable team that fulfills commitments consistently.
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      Norb Kula
      29 days ago
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      Contact Us

      We make sure only to use the best materials suppliers so that our products can live up to our high standards and your expectations. Let us know if your project requires domestic or AIS domestic materials. To get in contact with a bellow supplier you can trust, call us or fill out our contact form to order your metal bellow or stainless steel expansion joint today.

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