types of joints :  1, both ends are external joints  WW type   

                               2, both ends are internal joints   NN type

                               3, one end is external joints , the other with bottom   WDtype   

                              4, both ends are side cut from the trough  QdQd type

Metal bellows is widely used in automatic controlling and measuring instrument , vacuum technique , mechanical industry , power industry , transportation and other industry , as sensitive element , damping element  , compensating component , valve component .

We are  capable of customized special design for clients

We can offer the sample to the clients , then the clients would place a order to us