With the in-depth development of resource-saving and environment-friendly society, the concept of environmental protection and energy conservation has been integrated into all aspects of life and production, gradually becoming the trend of The Times. How to embody the concept of environmental protection and energy conservation in thermal pipelines, reduce heat loss to a large extent, and realize the optimal and reasonable allocation of resources has become a key and difficult problem for various technical personnel to study at the present stage.Normally, the bellows that sells on the market expands a section to be able to divide roughly two kinds, one is restricted model expand a section, more common have hinge model expand a section, pull bar transverse model expand a section etc.

The structure is simple, no need to add any fixed bracket on the bellows pipe system to obtain a higher blind plate force bearing effect. The second is non-binding expansion joint, which requires the erection of fixed supports on the pipe system to support the axial force. The common types are universal expansion joint and axial expansion joint.

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