Stainless teel bellows  -194℃ -+400℃

Excellent flexural fatigue strength and corrosion-resistance , better solder ability , used as meauring , sealing and compensating components .

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