HLS DBB External Pressurized Expansion Joint Butt Welded
- Bellow: Aisi 304/321
- Inner and Outer: St37,2
- Butt Weld: St37,2
- Connection: Butt Weld X Butt Weld
- Pressure: PN16
- Temperature: -80/+427oc
External pressurised expansion joints are a viable alternative to axial expansion joints, whose movement capabilities are limited. They are particularly favoured for lengthy, straight pipelines, as they help minimise the overall requirement for expansion joints. These external pressurised expansion joints can accommodate movements of 60-90-120-150mm, offering easy installation and user-friendliness.
Moreover, they readily lend themselves to insulation, designed to absorb both lateral and vertical movements.
Notably, their unique design allows the flow media to pass through the bellows and the surrounding structure, enhancing their ability to handle high pressures. These external pressurised expansion joints can be employed as a versatile solution across various flow media and pipeline systems.