Applicable Scenarios for Stainless Steel Spherical Expansion Joints

Release time:

2025-09-22

Stainless steel spherical expansion joints are widely used in the following industrial fields due to their corrosion resistance, high strength, and flexible compensation capabilities:

Thermal Pipeline System

It compensates for axial, lateral, and angular displacements caused by temperature changes (such as those occurring during steam or hot water transmission), with a compensation capacity that can be 5 to 10 times that of traditional “U”‑shaped expansion joints.
Typical applications: District heating in urban areas, high‑temperature steam pipelines in power plants.

Petrochemical Industry

Pipeline systems designed to withstand corrosive media such as acids, alkalis, and oils, addressing thermal expansion and contraction issues in pipelines with complex routing.
Case: Outlet pipelines of refinery reactors and high‑temperature reactor connections in chemical plants.

Metallurgical Equipment

The vaporization cooling system used in blast furnaces, converters, electric furnaces, and other equipment serves as a universal joint to absorb equipment vibration and thermal deformation.
Special requirements: High temperature resistance (≤500℃) and impact resistance.

Architecture and Infrastructure

Prevent pipeline damage caused by foundation settlement, earthquakes, or vibrations, such as in the water supply and drainage systems of high‑rise buildings and underground utility tunnels.

Aerospace and Defense

Compensates for thermal expansion and dynamic displacement in rocket launch pads and aircraft exhaust systems.

Long-distance transmission pipelines

Long-distance heat transfer (such as geothermal and waste heat recovery systems) reduces stress concentrations in pipelines and lowers maintenance costs.
Technical Parameters and Selection Considerations
Working pressure: 1.0–4.0 MPa, which must be matched to the pipeline design pressure.
Temperature range: -20°C to 500°C; special sealing materials must be used for high-temperature applications.
Nominal diameter: DN40–DN1200 mm, with customizable dimensions available.
Compensation Capacity: Total flexion angle ≤ 30° (±15°), capable of absorbing multi‑directional displacement.
Typical layout configuration
Z‑shaped pipe: Two expansion joints are arranged horizontally or vertically to achieve bidirectional compensation.
L-shaped pipe: A combination of three expansion joints to accommodate complex routing.

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