Specifications Efficient Cage Welding Machine for Reinforced Cement Tube This Cage Welding Machine is special for welding the reinforcement cage framework used in concrete drainage pipes. Capacity: 1) Diameter range: 300-1200mm, 1200-3000mm (different range, different machine) 2) Max. length: 4m 3) Hoop bar diameter: 4-8mm 4)The welded cage framework can be for flat joint, tongued & grooved joint, bell & spigot joint concrete pipes. 5) Production speed: 4-15 minutes per piece Features: 1)The diameter is varied online automatically, controlled by PLC. 2) In full stroke, the diameter can be varied automatically and shifted very quickly. 3) Vertical bars are clamped pneumatically, not manually load & unload the framework. 4) Special designed synchronizer to ensure no twist on the formed framework. 5) Auto alarm for faults and mis-operation. 6) Imported PLC, inverter, encoder and touch screen. If you have different requirements other than the above types, please kindly inform us about it and we will offer the solution for you. Believe that if you are in need of the construction machinery, you are get the satisfied ones from us.