Bellows expansion joints, also known as bellows expansion devices, are more commonly referred to as bellows compensators or bellows expansion joints. As the name suggests, the working body of a bellows expansion joint is a bellows-like tube, a product that uses the bellows as its elastic element to compensate for expansion and contraction. It is mainly used in pipelines or equipment to absorb thermal expansion and also has the functions of vibration reduction and noise reduction.
Because of the thermal expansion and contraction of pipelines, stress and thrust forces are generated on the pipe walls. The magnitude of the pipe wall stress affects the strength of the pipeline. Increased thrust forces require larger pipe supports to withstand the thrust forces generated by pipeline expansion and contraction. Therefore, the effective expansion and contraction deformation of bellows can reduce the stress and thrust on the pipe walls. Bellows expansion joints utilize the effective expansion and contraction deformation of the bellows to compensate for the dimensional changes in pipelines caused by temperature variations. They are widely used in various pipelines in steel, petrochemical, and urban heating industries, and are characterized by good elasticity, long service life, compact structure, and safety and reliability.
Applications of Corrugated Expansion Joints
Corrugated expansion joints are widely used in various industrial fields, including but not limited to:
- Petrochemical Industry: In oil and chemical pipelines, corrugated expansion joints absorb the thermal expansion of the pipelines, preventing damage due to temperature changes.
- Water Supply Systems: In urban water supply networks, corrugated expansion joints effectively reduce the impact of water flow on pipelines, extending their service life.
- HVAC Systems: In building HVAC systems, corrugated expansion joints are used to connect different pipes, ensuring the normal operation of the system.
GNEE Bellows Expansion Join for sale
Product Name: Stainless Steel Bellows Expansion Joint
Bellows Material: SS 321
Flange Material: ASTM A105
Flange Standard: EN 1092-1
Size: DN350, 14 Inch
Pressure: PN10, Class 150 LB
Length: 420 mm
Packaging: Wooden Case
