One. Product structure characteristics 
 The expansion joint consists of two (or more) and the end tube and the bellows guide bar composition. To absorb the axial displacement of the pipeline, it has a certain role in guiding the bending capacity and to ensure the expansion joint bellows at work, not instability, but the guide rod is not under internal pressure thrust. Limit should be installed at both ends of the nut to adjust to the rated value or greater compensation for the position a little, but not removed. Compensation for such expansion joints with a large amount of good self-oriented, etc., used in the work of the pipeline. 
 Second, model: factory production DN30-8000mm, the pressure level of 0.25-2.5Mpa 
 Third, the connection: 1. Flange connection type 2. Take over the connection type 
 IV. Product axial compensation :18-400mm