Sandvik stainless steel in challenging tunnel construction
When NSB AS, the Norwegian state-owned railroad company, started building a high-speed railway, creating a triangle from Oslo to southern Norway and then up to Bergen, navigating the scenic attractions required a great deal of innovative thinking as well as experienced partners.
![Drawing of Holmestrand station](/contentassets/6a1e356a762047b59b95f5e7b672e94a/holmestrand.jpg?width=420&height=240&rmode=crop&rsampler=bicubic&compand=true&quality=90&v=1684825121&hmac=111a54c194914bf19edabbe34d468110bc637fa4b12476be540e0e989a0c80d6)
The construction company Hollandia was commissioned to provide the ceiling construction inside the Holmestrand station. The town itself is situated on top of a mountain, and the station is located in the mountain tunnel at sea level.
To ensure safe construction, construction company Hollandia looked for a corrosion-resistant material with high strength. The solution can be seen as a ceiling suspended from the rock in adjustable hangers made of duplex hollow bar.
“Duplex stainless steel is unbeatable if you want a corrosion-resistant material with excellent mechanical properties. Maintenance-free Sanmac™ 2205, with its long life and low weight, was a perfect match for Hollandia,” says Christer Thorsson, Global Product Manager for hollow bar at Sandvik.
Thorsson means that the Holmestrand project is a great reference for Sandvik.
“It continues to build our brand as the unrivaled expert of duplex stainless steel.”