Triad Bellows: Expansion Joint Manufacturer & Custom Bellows Supplier

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.

Exhaust Expansion Joints

Metal Expansion Joints

Metal Bellows Capsules

Bellows Options For Fabricators

Expansion Compensators

Braided Vibration Isolators

Accessories

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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.

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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.

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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.

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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.

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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

Knowledgeable, courteous sales team that accommodates customer needs.

Michelle B.

2 days ago

Very responsive and helpful.

Jamie

less than 1 second ago

Triad is a very helpful and reputable company.

Mike

less than 1 second ago

Trustworthy supplier providing high-quality products and timely shipping.

Michael Goldstein

4 days ago

The team is helpful, consistent, and delivers products of good quality within a reasonable timeframe.

Josh

less than 1 second ago

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,

Victor Mesina

January 1

Pawal and Mike give us the best customer service of all our vendors. They have been very helpful in our company getting more business.

Roy V.

6 days ago

Triad Bellows offers the highest quality EJMA bellows, with excellent customer service and engineering expertise.

Josh

less than 1 second ago

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.

Bruce T

May 13

Triad has always been there when we needed them. They have done whatever they could to accommodate, regardless of project.

Scott

January 31

Always a pleasure to deal with as well as excellent service!

less than 1 second ago

Friendly and reliable team.

Dan

less than 1 second ago

High-quality products engineered for specific applications with helpful customer service.

Patti DeWolf

less than 1 second ago

Knowledgeable and easy-to-work-with team.

Juan Breucop

3 days ago

Close partner as a supplier.

Scott Cote'

May 13

Triad Bellows sells the solution, not the product. This is the same business model our company stands by and when you do business with other companies that have that mind set, you have a successful relationship. Triad has improved my knowledge and way of thinking when it comes to expansion joints and piping systems. Their quick responses and pricing structures have contributed to a growth in business. One of the best companies to do business with, hands down!

Stuart

May 24

Reliable team that fulfills commitments consistently.

Norb Kula

2 days ago

All I need to say is above. We get slightly customized parts from Triad all the time and they always deliver quality on time and work well with all of our engineering questions.

Taylor

less than 1 second ago

My rating of excellent for Triad Bellows speaks for itself. They handle day-to-day business in the same way they manufacture their products. They are a pleasure to work with and have excellent product knowledge and manufacturing ability.

Ken

less than 1 second ago

Exceptional service and reliability for 17 years.

Mario

June 9

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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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