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The automatic half-shell welding machine

The VARB is a fully automated variant of the VSTW-RBi-RBa for elbow with a maximum diameter of 200 mm (8"). Depending on the requirement, the pre-fabricated half shells can be placed into the tools manually or automatically by a robot. The weld operation is fully automatic and has consistent quality.

The VARB is best suited for applications with a high degree of automation and large production runs that need to be handled in a cost-efficient manner. The VARB requires a separate clamping and holding tool for each pipe bend diameter. No more than 10 minutes are normally needed for retooling, including time for changing of material and adjustment of parameters.

Benefits at a glance

  • Fully automated pipe bend welding machine with radius 1
  • High welding speed
  • High reproduction rate because the weld process is guided with shells
  • Very good quality of the seam even at the beginning and the end
  • Integration in a fully automated production line easily possible

Technical data

Parameter Value
Elbow diameter min. 80 mm | 3.15”
max. 200 mm | 8”
Material thickness 0.3 – 0.9 mm | 0.012 – 0.035"
Overlap variable
Copper wire 2.0 mm round | 0.078" round
Weld speed 2 – 9 m/min | 6.6 – 30 ft/min

The VARB automated stitchwelder


Dedicated tooling sets for each diameter




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Resistance welding systems

Welding systems

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