A Contemporary Review on Friction Stir Welding of Circular Pipe Joints and the Influence of Fixtures on This Process
Figure 7
(a) An orbital clamping unit used for pipe welding [103] (b) a portable machine for FSW of pipes and a model image of the pipe, comparison between the models (top view) (c) curved and (d) flat models, cross-section comparison between the (e) linear and the (f) curved modes [104].
