Drawn Over Mandrel Welded Mechanical Tubing is produced in carbon grades 1010 and 1020 by Plymouth Tube Co. to ASTM A 513 Type 5. For quality minded manufacturers, the drawn-over-mandrel process offers several significant benefits including: * Tighter dimensional tolerances: Cold drawing through dies over mandrels can yield consistently close dimensional tolerances. * Superior strength and formability: The physical properties of a cold drawn tube are much more flexible than those produced by other means. * Higher Quality OD and ID surface finish: Cold drawing also produces a superior OD and or ID surface, maintaining a smooth finished unmatched by other methods. * A wide variety of custom sizes: With cold drawing, mechanical tubing can be produced in an almost limitless range of OD and wall combinations.