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CJSC Stroytransgaz starts construction of underwater crossings for South Corridor 

March 23, 2015

Specialists of CJSC Stroytransgaz have started the construction of underwater crossings of total length more than 20 km that are a part of the South Corridor gas pipeline system.

As a part of the project CJSC Stroytransgaz will build 37 crossings across obstacles located on the territory of three regions of Russia in the Krasnodar territory, the Rostov and Volgograd regions. At the moment there have been laid more than 5.3 km of pipelines.

Welding works have been fulfilled at 17 sites, hydraulic testing has been implemented, pipeline string pulling has been completed. 5 crossings are being constructed by way of controlled-angle drilling, 8 – by microtunneling, 4 – by way of underwater technical works. At 4 other sites preparation for construction works is being implemented now.

A subsidiary enterprise, Stroytransgaz Podvodstroy LLC, has also been involved in water crossing works, and specializes in construction of water development facilities for main oil and gas pipelines. It has an extensive fleet of special purpose construction machines, as well as own diver staff who are experienced in implementation of the most complicated projects on the territory of Russia.

The key feature of the South Corridor is a great number of underwater crossings. The construction is implemented mostly on the territory of agricultural lands; this is why the company pays special attention to environmental issues. The specialists of CJSC Stroytransgaz recultivate a fertile soil layer, do everything possible to preserve fish stock inhabiting local water reservoirs.


CJSC “Stroytransgaz” is one of the leading construction companies of Russia implementing high technology “turn-key” oil and gas projects; a construction partner of the Eastern Siberia – Pacific Ocean oil pipeline, Baltic Pipeline System 2 (BPS-2), the Bovanenkovo – Ukhta gas pipeline system, the Southern Corridor gas pipeline system including the compressor station Kazachya, and the Power of Siberia gas transportation system facilities.