Soner Temel Mühendislik İnşaat ve Ticaret Anonim Şirketi (STM) is among the leading Tunnelling and Infrastructure contractors in Turkey. Our company offers services in tunnelling (Metro, Highway, Energy, Irrigation, Wastewater Tunnels and Shafts), soil improvement and ground stability, mine development and ore extraction, construction of metro stations, deep excavation and shoring works.
As of its establishment in 2000, STM has been producing creative solutions with its strong technical team and expert on-site personnel through following new technological improvements closely. As a result, it develops good relations in the sector. It adds value to its brand with its high performance of work and qualified applications. This differentiates STM from its competitors and carries it to a preferred position.
Its loyalty to ethical values, quality-oriented philosophy, and the importance it attaches to the environment, occupational health & safety constitute the road map of our company. STM is a construction company
that has proven its expertise especially in tunnels and underground structures and contributed to the country's tunnelling by being the
first company who has implemented the "Umbrella Arch Method" in tunnels.It also produces contemporary solutions in the sector with its diaphragm wall and baret pile manufacturing applications in deep excavation and shoring works.