With the completion of the welding of the last weld in the Chinese territory, the welding installation of the two river bottom pipelines in the Heilongjiang Crossing Section of the Sino-Russian Eastern Gas Pipeline Project was successfully completed, 23 days ahead of the contract period. This is the first cross-border natural gas pipeline tunnel project in China. It marks the complete opening of the “throat main road” connecting the Chinese territory of China and Russia and the Russian territory, laying a solid foundation for the scheduled production of gas at the end of next year. basis.
The Heilongjiang Shield Crossing Project is the control project with the highest construction risk and the most technical difficulty in the Sino-Russian East Line project. The construction period is tight, the task is heavy, and the requirements are high. The Sino-Russian East Line Project Department of the pipeline branch cooperates with the Russian owner, SGS supervision and construction contractor to overcome the large-scale concrete pouring in the shaft and the overall prefabrication of the S-shaped pipeline in the shaft. Construction problems have effectively guaranteed the quality and safety of the construction and the progress of the construction period. The second pipe was used for 102 days, the qualification rate of welding was 96.2%, 77 days less than the first pipe welding, and the pass qualification rate of welding was increased by 3 percentage points.
It is reported that while the Chinese side speeds up construction, the construction of the Sino-Russian East-line natural gas pipeline in Russia's Siberian power pipeline has also entered the final stage. Substances Used in Analytical Chemistry
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