First, the product structure characteristics: 
 By the receiver of such expansion joints, bellows, put to death over a pair of hinges connected to pose. It can absorb only a single plane angular displacement. Absorption of displacement should have two or three angle-type expansion joints used in combination. Hinge expansion joints have the ability to withstand the internal pressure thrust. 
 Second, model: factory production DN65-5000mm pressure level: O.1MPa ~ 2.5MPa. 
 Third, the connection: 1, flanged type 2, take over the connection type 
 Fourth, the amount of compensation: ± 4 ° ± 9 ° for a