DTS is supplier for Northern Line Extensions Project DTS is delighted to announce that it was awarded a contract on the spheroidal graphite iron (SGI) lining rings 6.5 m and 9.5 m in diameter for London Underground by Ferrovial Agroman, a Ferrovial subsidiary, and UK construction company Laing O’Rourke. The lining rings will be used within the Northern Line extension project. On June, 2016, representatives of Ferrovial Agroman, London Underground and OTB Engineering visited PJSC “Dneprotyazhmash”, a DTS Group production enterprise, in order to inspect manufacturing processes and to take part in acceptance of the first 4 trial lining ring assemblies made under the Contract. The Parties successfully commissioned fit-up assembly prototype SGI lining rings and expressed satisfaction with the Contract performance progress. It is intended to utilize DTS Group-made SGI lining rings at 3 locations within the Northern Line extension project: Kennington Step Plate Junction North and Southbound tunnels, Kennington Station additional Cross Passages, and Running Tunnel rings at Cross Passages. The whole Northern Line extension project, which is worth a total of 500 million pounds (around 628 million euro), is expected to be completed by 2020. Ferrovial is one of the world's leading infrastructure operators and municipal services companies, committed to developing sustainable solutions. The company has 65,000 employees and a presence in over 25 countries. Its main business areas are: Services, Toll Roads, Construction and Airports. Laing O’Rourke is a globally diverse engineering and construction group with a commitment to delivering excellence plus performance, founded on 166 years of experience.