产品介绍：比例连杆复式自由型膨胀节由—个波纹管和二个端接头构成， 它通过波纹管的柔性变形来吸收管线轴向位移，其中接管的二端与管道相连 ， 运输固定螺柱是保证膨胀节在运输过程中波纹管的刚性支承。

公称通径：DN15-DN800 (mm) 

设计压力：－0.05-1.0 (Mpa) 

执行标准：GB/T12777-2008

Product introduction: The proportional connecting rod compound free-type expansion丿oint is composed of a co1-rugated pipe and two end 丿oints. It absorbs the axial displacement of the pipeline through the flexible deformation of the corrugated pipe. The two ends of the pipe a「e connected to the pipeline. Ensure the rigid support of the bellows during the transportation of the expansion joint 

Nominal diameter: DN15-DN800(mm) 

Design pressure: -0.05-1.0 (Mpa) 

Executive standard: GB/n2777-2008