II. Product Structure Characteristics

This kind of expansion joint is connected by one or more bellows in series. There is an outer sleeve outside the bellows which can make the bellows move axially. This expansion joint only absorbs the axial displacement. The outer casing is not only a protective device for this multi-wave expansion joint, but also maintains its stability. Widely used in central heating pipelines.

III. Notices for Installation and Use

1. When installing this kind of expansion joint between two fixed pipe racks, it should be arranged according to the requirement of the axial expansion joint to the pipe rack.

2. In order to reduce the stress of the pipe rack, the expansion joint of this type can be pre-deformed before installation.