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Automatic bellow expansion joint forming machineDec 5, 2014 . PLS CONTACT:tina.lifugeco Skype ：fugetinali NAME :Tina TEL: 8615243460701 Automatic bellow expansion joint forming machine will.construction joint machine,Automatic bellow expansion joint making machine; Macchina .Dec 9, 2014 . Automatic expansion joint making machine is controlled by BECKHOFF PC CNC system or Siemens PLC control system. 2. The machine can.Contraction Joints in Concrete Slabs - The Concrete NetworkNow let's talk about what are arguably the most important type of joints—certainly the most likely to cause problems. Both isolation and construction joints are.