Pipe and round rods
Flats and square roof
Think sheet
Heavy sheet
One member stationary and another rotating type
Both members rotates
Both members are heated
One member is heated and another rotating
Seam welding
Friction welding
Flash butt welding
Spot welding
Fusion stage
Non fusion stage
Plastic stage
Only heating stage
Groove tungsten arc welding
Grip tungsten arc welding
Gas tungsten arc welding
Galvanised tungsten arc welding