Jansen Steel Tubes produces welded and welded-drawn precision steel tubes and profiles for steering systems made of standard materials as well as high-tensile materials. The applications in steering construction are very critical to quality. The tubes' tight tolerances and very good reshaping properties ensure a smooth component production. The use of modern high-tensile materials allows further weight savings by reducing the wall thickness while maintaining the component's strength.

Tube requirements

  • Excellent formability
  • High torsional strength and durability
  • Excellent welding properties
  • High geometrical accuracy
  • Excellent surface condition

Material properties

  • High torsional strength and fatigue strength
  • Excellent reforming properties
  • Homogeneous strength properties and ductility
  • Excellently suitable for welding
  • Potential to reduce wall thickness


  • Homogeneous, fine-grain structure in weld seam and basic material
  • Minimised surface decarburisation of inner and outer surfaces (< 100 μm)
  • Very good weld seam quality
  • Very good reforming properties


  • Minimised fluctuations in wall thickness and inner/outer diameter
  • Minimised deviations in straightness
  • Minimised deviations in concentricity and axial run-out
  • Minimised eccentricity
  • Specific tube end processing: sawn/brushed; chamfered, completely processed/chamfered


  • Excellent surface condition
  • Minimised surface flaws (adhesions, scratches, dents, etc.)
  • Minimised corrosion protection, optionally specific corrosion protection