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High Ductility Mill

High Ductility Mill

Features in Pipe Forming

Features in Pipe Forming
  • Little processing strain in the pipe circumferential direction, creating greater uniformity
  • No repeated bending deformations

  • Realization of low-strain forming
The realization of nearly ideal forming enabled minimization of squeezing in fine passes and sizing during forming.
  • Realization of thin-walled items
Low-strain forming enabled manufacturing of wall thicknesses down to 0.6 mm (1/D = 1%) whereas they the minimum used to be 1 mm.

High Ductility Mill Specifications

Outer Diameter Range 25.4~101.6mm
Wall Thickness Range 0.6~3.0mm
Length Range 3.5~7.5m
Welding Method High-frequency electric resistance welding
Tube Manufacturing Speed Max.100m/min.
Full view of the High Ductility Mill
Example low-strain roll placement

Examples of Pipe Performance Increases from the High Ductility Mill

Results of tensile test on SUH409L steel tube (0.2% proof stress change)
Results of tensile test on SUH409L steel tube (0.2% proof stress change)
Results of tensile test on SUH409L steel tube (elongation change)
Results of tensile test on SUH409L steel tube (elongation change)