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Heavy plate for the tunnel boring machine Gotthard

"Steely moles"

With the new Gotthard rail tunnel in Switzerland, one of the most elaborate construction projects of our time comes into being. The prospective longest transport tunnel in the world with its length of 57 km should optimize the rail connection Basel-Milan. For the construction of the new Gotthard rail tunnel, the commissioned construction companies ordered four of the world's most powerful tunnel boring machines. More freight trains and passenger trains can commute between Basel and Milan because of the new tunnel which is to be parallel to the Gotthard road tunnel. Due to the more even route of lines the trains are able to travel much faster than before with speeds up to 250 km/h. The completion of this extraordinary construction project is aspired for 2016.

For the building of the tunnel four Gripper tunnel boring machines are applied. Each one of these 3,050 t heavy machines has a maximum drill diameter of up to 9.58 m and is powered with 3,500 kW (Torque 8500 kNm). After finishing the section Bodio-Faido in October 2006 two Gripper tunnel boring machines had to be generally overhauled and their drill heads had to be extended before they could continue their work in the next section (Faido-Sedrun). For the construction of these tunnel boring machines Dillinger Hütte delivered overall 2,088 t of heavy plate steel S355J2G3 with a thickness range of 30 to 200 mm.

Facts

Country Swiss
Quality S355J2G3
Diameter 9.58 m
Delivered quantity 2088 t
Plate Thickness: 30 - 200 mm
Project: 4 Tunnel Boring Machines for the St. Gotthard Tunnel
© Herrenknecht AG © Herrenknecht AG

Contact

 Stefan Ackermann
Stefan Ackermann

Sales Heavy Machinery, Stockists & Steel Service Centers

Tel.: +49 6831 472195
Fax: +49 6831 474580
E-Mail

Dillinger

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Dr. Wolfram Hölbling
Dr. Wolfram Hölbling

Marketing & Technical Support

Tel.: +49 6831 474708
Fax: +49 6831 473089
E-Mail

Dillinger

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Contact

AG der Dillinger Hüttenwerke
Werkstraße 1
66763 Dillingen/Saar

Tel.: +49 6831 47 0
Fax: +49 6831 47 2212
E-Mail: info@dillinger.biz

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Heavy-plate products
  • Non-alloy structural steels
  • Normalised fine-grained structural steels
  • Thermomechanically rolled fine-grained steels
  • High-strength quenched & tempered fine-grained steels
  • High-temperature steels
  • Cryogenic steels
  • Weathering-resistant steels
  • Case-hardening & quenching & tempering steels
  • Security steels
  • Tool & mould steels
  • Wear-resistant steels
  • Sour-gas-resistant steels
  • Offshore steels
  • Linepipe steels
Applications
  • Steel Construction
  • Hydropower Engineering
  • Pressure Vessels & Boilers
  • Earthmoving Machinery & Mining
  • Mechanical Engineering
  • Offshore Oil & Gas
  • Large Diameter Pipes
  • Shipbuilding, inc. Refrigerated Transport
  • Plastics and Concrete Moulds
  • Wind & Tidal Power
  • Protection
Proprietary steels
  • DILLIDUR
  • DILLIMAX
  • DI-MC
  • DIWETEN
  • DICREST
  • DIWA
  • DILLINAL
  • DIROS
  • DIMO
  • DIFENDER
  • DICUT
  • DI-RACK
  • DIGEAR
  • DI-TANK
  • DIWIND
  • Other steels
Plates on stock and steel services
  • Heavy plate services ex stock
  • Heavy plate services ex mill
By-products & Chemical laboratrory
  • By-products
  • Chemical laboratrory services