(under subclass 154) Method or apparatus including a step or means for either (a) serving or machining the string or conduit, or (b) either plastically shaping stock material into the form of a string or conduit or plastically shaping an already formed string or conduit so as to alter its cross sectional configuration.
SEE OR SEARCH THIS CLASS, SUBCLASS:
168.1+, for methods and apparatus for submerging a line of pipe or cable and controlling or causing the deformation of the same in a direction transverse to its longitudinal axis.
SEE OR SEARCH CLASS
72, Metal Deforming,
48+, and 176+ for processes and apparatus for forming tubes by plastically deforming a strip of stock material.