... It will have axial displacement in operation 2. BF-Type MaterialNo.NameQtyMaterial1main body1QT450-10,Q235A2seal ring1NBR,CR,EDPM3gland1QT450-10, ... #7short boltnQ235A,35# 3. BF-Type Single Flange pipe connection Basic Size: 4. BF-Type Single Flange pipe connection have been receiving ... of years. As shown clearly in the picture,the single flange limited telescopic joint can link with the flange on ...