Stainless Steel Metal Bellows Expansion Joint for Plumbing - ±50mm Axial Compensation, 0.6-2.5MPa Pressure Rating
Price:
$35.6-$109.8
MOQ:
1 set
Delivery Time:
5-12 work days
Brand:
Lianghe
Product Description
Stainless steel metal bellows expansion joints are flexible connection devices engineered to absorb displacement and deformation in piping systems caused by thermal expansion, contraction, vibration, or foundation settlement.
Main Structure Components
- Metal Bellows: Core component typically made of stainless steel (304, 316L) providing flexibility through multi-layer or single-layer corrugated structure
- Flange/Welding End: Connection to pipeline - flange type for easy disassembly, welded type for superior sealing
- Limiting Pull Rod/Hinge: Prevents excessive compression or stretching to protect bellows integrity
- Outer Sheath (Optional): Provides protection against dust and mechanical damage
Common Expansion Joint Types
| Type | Features | Application Scenario |
|---|---|---|
| Axial Type | Absorbs pipe axial expansion and contraction (compression/tension) | Thermal compensation of straight pipe sections |
| Horizontal Type | Compensation for lateral displacement perpendicular to pipe axis | Pipeline lateral deviation or settlement |
| Angle Type | Absorbs duct angle variation (typically ±15°) | Angular displacement near elbows |
| Universal Hinge Type | Multi-directional compensation (axial + lateral + angular) | Complex 3D piping systems |
| Pressure Balance Type | Eliminates internal pressure thrust and protects fixed brackets | High-pressure, long-distance pipelines (steam pipe networks) |
Core Technical Parameters
Compensation Capabilities
- Axial Compensation: Maximum displacement for compression/stretching (e.g., ±50mm)
- Lateral Compensation: Depends on bellows length and structure
Pressure and Temperature Ratings
- Pressure Level: Matches pipeline working pressure (0.6MPa, 1.6MPa, 2.5MPa)
- Temperature Range: Conventional 304 stainless steel: -196℃ to +450℃; high-temperature applications require special materials (Inconel)
Performance and Connection
- Fatigue Life: Typically ≥1000 cycles (verified according to displacement)
- Connection Methods: Flange type (ANSI, DIN, GB standards) or welded type for high-pressure/high-sealing requirements
Common Issues and Solutions
Bellows Leaks
- Cause: Corrosion or fatigue cracking
- Solution: Replace with higher quality material (316L) or add anti-corrosion layer
Insufficient Compensation
- Cause: Incorrect selection or excessive pipe displacement
- Solution: Recalculate displacement and replace with larger compensation model
Abnormal Support Force
- Cause: Improper guide support or fixed support installation
- Solution: Verify support layout meets design requirements
Technical Support Available: If you encounter issues with bellows compensators in your pipeline systems, contact us for professional technical guidance to ensure safe and stable pipeline operation.
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Company
Henan Lianghe Pipeline Equipment Co.,Ltd
Location
Pipeline Industrial Park, Gongyi City, Henan Province, China
Contact Person
Kelly