OZ-2 (Haoud El Hamra-Arzew) oil pipeline
In 2000 Stroytransgaz won an international tender conducted by Algerian state company SONATRACH for engineering, procurement, and construction of the northern part of the Algerian main oil pipeline OZ-2. The pipeline, running 403 kilometers with diameter of 34 inches, has capacity to transmit 34 million tons of oil per year.
In addition to the line part of the pipeline, the project included construction of twelve valve stations, two tie-ins for pumping stations, pressure reducing stations, and a final terminal in the Arzew oil-loading port.
The oil pipeline passed through rocky, extremely rugged topography with a high degree of erosion; it intersected twelve rivers, mountain ranges, automobile roads and railroads, and branches of the OZ-1 oil pipeline. GazNIIproekt undertook the complex of engineering work for the oil pipeline.
The facility was released for exploitation in 2003.