Extra-high strength for special offshore applications

DI-RACK plates, with minimum yield strengths starting at 690 MPa combined with excellent toughness properties, are the solution for heavily stressed structures in the offshore oil and gas industry. DI-RACK is used, for instance, in the legs of wind-turbine installation vessels and in mobile production platforms, so-called jack-up rigs, for the racks of the jacking system.

The strengths of DI-RACK proprietary steel

  • DI-RACK is a quenched and tempered fine-grained structural steel with constant yield strengths throughout the entire thickness range up to 210 mm: 690 MPa for Type B and 723 MPa in Types M and S, which additionally feature enhanced tensile strengths.
  • DI-RACK offers optionally improved deformation properties perpendicular to the plate surface for plates exposed to loads in the thickness direction.
  • DI-RACK possesses not only ultra-high mechanical strength but also excellent toughness properties throughout the plate cross-section at test temperatures of down to -60° C, depending on the customer’s specification.
  • Dillinger possesses ABS and DNV approvals for plates in the 690 MPa yield-strength class.



Data sheets & specifications

Delivery program – heavy plate
DI-RACK – High strength fine grained structural steel, quenched and tempered, for racks and chords in plate thicknesses up to 210 mm

Contact persons


Lutz Domin
Head of Sales Department Steel Service Center, Plate Processing

Phone: +49 6831 472195
Fax: +49 6831 474580


Johannes Klemm
Head of Marketing & Technical Support, Machinery & Construction Equipment, Steel Service Center, Plate Processing, Protection Steel

Phone: +49 6831 475658
Fax: +49 6831 47999036