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Metal Bellows and Expansion Joints Manufactured for Excellence

Fast quotes,
quick deliveries,
quality USA products &
friendly professional service.

These are the Triad benefits our customers have come to rely on. As a custom metal expansion joint manufacturer, Triad Bellows has the flexibility to build metal bellows and metal expansion joints specific to your needs while at the same time saving you money.

Specialists

We specialize in multi-ply metal bellows for the ultimate cycle life performance as well as single-ply metal bellows for less demanding service.

Custom Design

Let us help you design your metal expansion joints, engine exhaust expansion joints, marine exhaust expansion joints, stainless steel bellows, exhaust flex pipe, externally pressurized expansion joints, pressure balanced expansion joints, rectangular expansion joints, rectangular metal bellows, tied universal expansion joints, hinged and gimbal expansion joints and your duct expansion joints.

Fast Quotes • Quick Deliveries • Quality USA Products • Friendly Professional Service

EXHAUST EXPANSION
JOINTS

Triad Bellows specializes in the design and manufacturing of metal bellows expansion joints specifically engineered for the engine exhaust industry. The minimum pressure rating on Triad exhaust expansion joints is 5 PSIG @ 1000ºF making them the perfect solution for blower, fan, and other low pressure piping applications …

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METAL BELLOWS
EXPANSION JOINTS

Low pressure and high pressure Metal Expansion Joints are designed and manufactured in strict accordance with the Expansion Joint Manufacturers Association (EJMA) latest 10th edition. At Triad Bellows we believe that design integrity is key to building metal bellows expansion joints that will last. Customers around the …

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METAL BELLOWS
CAPSULES

Low pressure and high pressure Metal Expansion Joints are designed and manufactured in strict accordance with the Expansion Joint Manufacturers Association (EJMA) latest 10th edition. At Triad Bellows we believe that design integrity is key to building metal bellows expansion joints that will last. Customers around the …

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PRESSURE BALANCED BELLOWS EXPANSION JOINT

The pressure thrust imposed on the system piping anchors is nearly eliminated with the pressure balanced expansion joint design. Triad Bellows designs and manufactures both the 90 degree elbow style( shown) and the inline pressure balanced style. When space limitations prevent sturdy enough anchor designs this metal expansion joint comes to the rescue.

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Tied Universal Metal Bellows Expansion Joints

The Tied Universal Expansion Joint design has large lateral offset capabilities. This double bellows style expansion joint can also be engineered for large amounts of axial compression or a combination of both. Tie rods are designed to absorb the full pressure thrust of the bellows eliminating the need for anchors when used for lateral offset only.

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Metal Bellows Capsules for Expansion Joint Fabricators

Triad Bellows Design and Manufacturing will custom design your metal bellows specifically for your application. We use sophisticated engineering software developed to meet the strict guidelines of the Expansion Joint Manufacturing Association (EJMA) 10th Edition. If your requirement has already been engineered we can make your bellows to your design.

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Externally Pressurized Expansion Joints for extreme axial travel

Triad Bellows custom designs externally pressurized expansion joints up to 18” diameter with axial compression capabilities up to 16” travel. All expansion joint are manufactured in the United States and can be custom designed with all stainless steel construction, Inconel bellows, ANSI forged flanges etc… By design the externally pressurized expansion joint is extremely rugged and has several built in features.

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Large Diameter Metal Bellows and Expansion Joints up to 110”

With modular tooling Triad can manufacture even the odd diameter bellows and metric sizes. With our comprehensive tooling inventory most bellows sizes can be produced quickly up to 110” diameter. As with the smaller bellows we can also make the larger diameters with multi-ply construction for increased cycle life and movement capability. High temperature T-321 stainless steel is our standard material of construction but T-316, T304, T309, T310, Hastelloy X, Hastelloy C276, Inconel 625 and other alloys can also be used in any of our metal bellows designs.

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Bellows Expansion Joints Manufactured to EJMA 10th Edition Standards

Triad Bellows designs and manufactures metal bellows and metal bellows expansion joints in accordance with the Expansion Joint Manufacturers Associations latest 10th Edition standards. Bellows design calculations are provided with each quotation. All expansion joints manufactured with tie rods are designed to withstand the full pressure thrust load. At Triad Bellows our goal is to provide innovative, cost saving designs without sacrificing quality and never taking shortcuts.

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PRESSURE BALANCED BELLOWS EXPANSION JOINT

The pressure thrust imposed on the system piping anchors is nearly eliminated with the pressure balanced expansion joint design. Triad Bellows designs and manufactures both the 90 degree elbow style( shown) and the inline pressure balanced style. When space limitations prevent sturdy enough anchor designs this metal expansion joint comes to the rescue. Let our ...
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How Metal Bellows are Made

How Metal Bellows Are Made BELLOWS DESIGN Metal bellows and bellows expansion joints are placed in piping systems to absorb the thermal growth of the pipe. Each time the piping system heats up and cools down the bellows goes through 1 complete cycle.  The manufacturing of a metal bellows starts with the design process. The ...
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Typical causes for metal expansion joint failures

Typical Causes for Metal Expansion Joint Failures The good news is that most metal bellows expansion joint failures are preventable when proper care is taken in the design, shipping, installation and testing of the joints. This article is meant to help prevent or identify the root causes of the most common piping expansion joint failures ...
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