Rectangular Metal Expansion Joints with Accessories

Rectangular metal expansion joints from Triad Bellows offer robust, field-proven solutions for accommodating thermal growth, vibration, and misalignment in rectangular duct and piping systems, now enhanced with a full suite of accessories for optimized performance and safety. Fabricated to EJMA (10th Edition) guidelines in stainless steel (T-316L, T-321) or high-performance alloys (Inconel®, Hastelloy®, Monel®), these units can be fitted with welded or loose hinges to guide motion and reduce loading on the bellows, limit rods to prevent over-extension and protect against excessive axial movement, and high-temperature liners to shield convolutions from erosive or corrosive media. Ideal for applications in power generation, petrochemical processing, HVAC, and marine exhaust systems, Triad’s U.S. fabrication ensures precise geometry, leak-tight weld integrity, and full customization—whether you need specialized flange drilling, atypical face-to-face dimensions, or custom pressure ratings up to ANSI 300 lb and temperatures from –320 °F to 1,200 °F—backed by rapid turnaround and expert technical support.