Expansion Joint / Expansion Joint
Primary Application
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Primarily designed to absorb axial thermal expansion or contraction in piping systems.
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Suitable for pipelines conveying steam, hot water, exhaust gases, and various industrial fluids where structural movements occur.
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Designed for straight pipe runs with proper anchoring and guiding configurations.
Structure & Specifications
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Bellows Material: Stainless Steel SUS316 (Offers high flexibility and superior corrosion resistance).
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Components Material (Flanges/Shells): Available in Mild Steel, SUS304, or SUS316 (Customizable based on the operational environment).
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Ending Type: Tube End (Plain ends suitable for direct welding into the piping system).
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Inner Sleeve (Liner): SUS304 or SUS316 (Protects the bellows from high-velocity media, reduces erosion, and minimizes pressure drop).
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Tie Rods: No (Unrestrained type; requires main anchors and guides in the piping layout to control pressure thrust).
Movement
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Axial Movement: Yes (Primary function; absorbs compression and elongation along the longitudinal axis).
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Lateral Movement: Yes (Limited use) (Accommodates slight parallel offset or shearing movements).
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Angular Movement: Yes (Limited use) (Allows minor angular rotation or angular deflection around the center).
Key Features & Benefits
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Efficient Displacement Absorption: The flexible SUS316 corrugated bellows safely absorb thermal stress, preventing damage to connected machinery and piping joints.
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Streamlined Flow: The integration of an inner sleeve (liner) ensures smooth fluid dynamics, preventing turbulence and media entrapment within the bellows corrugations.
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Direct Weld Installation: The tube-end design provides a secure, leak-proof welded connection directly to the pipeline, eliminating the weight and space requirements of bolted flanges.


