» More technologies » Welding systems » Resistance welding.. » Annular flange wel..

RFA annular flange welding system

The fully automated stitch welder from the coil to the finish product

Depending on pipe diameter and pipe length, you will achieve a production output of 10-12 pieces per minute. A different clamping and holding tool is required for every diameter. Retooling for a different diameter takes no more than 10 minutes, including change of material, clamping tool, as well as adjustment of the welding parameters.

Benefits at a glance

  • Complete mini production plant
  • Modular design
  • Short changeover time

Technical data

Parameter Value
Welding diameter min. 80 mm | 3.2"
max. 250 mm | 10"
Material thickness 0.3-0.9 mm | 0.012-0.035"
Copper wire 2.0 mm round | 0.078“
Overlap 6.0 mm | 0.24"
Weld speed 3-12 m/min | 10-40 ft/min


From the raw material to the strip all the way up to the finished product, the RFA operates fully automatically.


Flange piece with thread


Flange piece without thread

Products & services - details - ANDRITZ GROUP - servertoken