First, the product structure characteristics: 
 This class is composed of two expansion joint bellows, long bar, such as the middle part over and large structure, it can absorb piping within any plane transverse displacement. Displacement of a large spherical rod nuts on the turn around the spherical washers. While the large bar also has the ability to withstand the internal pressure thrust. 
 Second, model: factory production DNl00-8000 pressure levels: 0.1 ~ 2.5MPa. 
 Third, the connection: 1, flanged type 2, take over the connection type 
 Fourth, lateral compensation :90-537mm