Variable Diameter Rebar Cage Welding Machine

A variable diameter cage welder changes cage size without rebuilding the machine. The full-automatic series covers Φ300–1200, Φ600–2000, Φ800–2400, Φ1500–3000 and Φ2000–4000 mm at cage lengths of 2–4 m, and produces reinforcement cages for flat-joint, tongue-and-groove, steel-socket and socket-and-spigot drainage pipes. The cage is welded under an intelligent electrical control system with detection, all-digital welding control, push-rod reinforcement feeding and continuous digital diameter change, while ring pitch stays adjustable and the drive runs on full variable-frequency synchronous speed control.

Diameter change is handled inside the control system, so your operator selects the new size and the machine adjusts, without the crew re-setting the mechanics. The structural parts are machined to fixed drawings, which keeps cage geometry consistent from one diameter step to the next. A class added later runs on the same machine.