Metal Expansion Joints and Metal Bellows Expansion Joints for Piping
Metal Expansion Joints and Metal Bellows Expansion Joints for Piping
Metal expansion joints and metal bellows are critical for your facility’s high temperature and higher-pressure piping system. They are also commonly known as stainless flex joints, stainless steel bellows, welded bellows, metal bellows expansion joints and metal flex joints.
Metal expansion joints and SS Bellows types and styles include unrestrained, tied, hinged, gimbaled, single, universal, in-line, externally pressurized, elbowed and more.
Metal expansion joints high temperature and pressure ratings are ideal for high pressure steam expansion joints and other high temperature expansion joints.
We can refurbish a customer’s out-of-service joint, especially very large diameter metal expansion joints.
Our highly knowledgeable and trained sales people and factory engineers work with you and your engineers to customize the optimum metal expansion joint and bellows joint for your specific piping system needs.
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- Additional Info
Metal Expansion Joints and Bellows Features:
- High Pressure and high temperature ratings. Exact ratings depend on the design.
- Custom Designed and pre-engineered
- Corrugated 316 and 321 stainless steel annular metal hose liner
- Monel® and Inconel ® available
- Close pitch and Open pitch designs
- With or without single or double braid cover
- Rubber cover available
- Flanged and threaded end fittings
- Designs conform to EJMA ASME Section VIII, B31.1 and B31.3
- Fittings area welded on by ASME IX certified welders
- 3D CAD modeling
- Testing options include pneumatic, hydrostatic, high-pressure gas, liquid penetrants, helium mass spectrometry, and X-ray
- Certifications available
- Very Large diameter designs available
- Made in the USA
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Metal Expansion Joints and Metal Bellows Expansion Joints for Piping
Features and Characteristics
- Sizes: ¼” – 16″ ID
- Length: Custom to your metal hoses’ specifications
- Temperature range: -320°F to 1500°F
- Pressure range: Up to 6000 psi
- Fittings: Standard and custom fittings welded to your metal hose assembly, including Titanium fittings
- Cover: With or without a stainless steel braided hose cover. We can also add an EPDM rubber cover for color coding or operator safety from extreme temperatures
- Materials: 321 & 316 Stainless Steel; and specialty metals including Hastelloy, Monel, and Inconel
- Helical, Annular, Strip wound, Interlocked metal hose liners available
- Tubular and braided metal hose styles are available
Applications
- Flexline flexible metal hoses
- Expansion joints
- Fuel Cell hoses
- Gas turbine hoses
- Chemical metal hoses
- Cryogenic metal hoses
- Coolant hoses
- Natural Gas hoses
- Pump hoses
- Pump connectors
- Steam Hose
- Alcohol Hose assemblies
- Solvent hose assemblies
- Bleach hose assembly
- High Temperature hoses
Welding Procedures
Your flexible metal hoses are welded together and then helium leak tested with a mass spectrometer if requested. Further radiography or x-ray testing, dye penetrate testing and cleaning is available.You can be confident that, because of superior fabricating welding procedures, and helium leak testing capabilities, your flexible metal hoses are the highest quality for your critical application.
Our flexible metal hoses are used by the Navy, NASA, nuclear and power generation, military contractors, pharmaceutical manufacturers, and chemical manufacturers. Every hose fabricator will tell you that they make quality hose assemblies. But Thunder Technologies hoses are made with state-of-the-art procedures and testing capabilities.
The Right Way to Test Flexible Metal Hoses
Did You Know . . . . All metal hoses leak!
The ONLY way to accurately leak test your metal hoses is by using helium and a mass spectrometer to determine your leak rate. Most fabricators do not have mass spectrometers, so instead, they will test your hose by putting it into a bucket of water and eyeball it for bubbles.You want to know your metal hose’s leak rate.
Your flexible metal hose can be tested with a mass spectrometer so we can give you the exact leak rate of your metal hoses. Unless your specs require a more stringent leak rate, your metal hose will be tested at a leak rate of 10 -8, or a leak rate of about 1 drop of fluid per year.Testing metal hose assemblies in a bucket of water DOES NOT give you the leak rate for your critical metal hose requirements. This inferior metal hose leak testing is not uncommon among metal hose fabricators.
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