Welding technologies

By  using modern welding technology and equipment and deploying qualified specialists, Stroytransgaz conducts welding operations in accordance with the highest international standards.

To perform overhead pipe work, we use automated gas-shielded welding with high performance automated complexes along the entire length of a route. The company’s equipment is outfitted with a computerized system able to track welding processes and capable of making programming changes during welding, depending on the three-dimensional position of the welding head, for each joint layer. Working in this manner, we increase the reliability and quality of welded joints.

We have been able to make significant improvements in productivity and the quality of pipe weld joints by using two-sided submerged arc automated pipe welding. At special purpose pipe-welding yards, company specialists consolidate pipes into two- or three-pipe sections. This technology is used for welding pipe with steel grades of Х70, Х80, К70, and higher.

Projects that the company realizes often must be carried out under abnormal climatic conditions. At exceptionally complicated sections of pipeline routes, we use semi-automatic welding with self-shielded flux-cored wire (Innershield technology).

When welding large-diameter pipelines in the Far North, we use a flash-butt resistance method, allowing us to eliminate the human factor as an influence on welding quality.

High-speed manual arc welding with new-generation electrodes permits us to organize work using welding spread method, guaranteeing superior productivity rates and high-quality welding for pipe with steel grades of К70, Х80, and Х100.

To weld special classes of steel (corrosion resistant steel and alloys, aluminum, titan and others), we use semi-automated and automated argon arc welding.