Mill Tolerance Allowable thickness variation from the mill that produced the pipe. This is defined by the governing specification. For A53/ A106 pipe, the mill tolerance is %; Type of Pipe This is how the pipe is constructed. The pipe could be ERW or Seamless pipe. A less common type of pipe is furnace butt welded pipe.
Aug 16, 2001· Solving problems on the tube mill. The FABRICATOR February 2001 August 16, 2001 By Robert Sladky. Tube mill operators face a variety of challenges every day in their effort to produce highquality tubing in a costeffective and productive way.