Features in Pipe Forming
- Little processing strain in the pipe circumferential direction, creating greater uniformity
- No repeated bending deformations
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- 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 (elongation change)
