Recently, the country's first LNG import terminal project - came news of the Shenzhen LNG project, the construction of Sinopec four built in 9% Ni (nickel) steel welded construction of a new high, a welding pass rate for the first time more than 99 %, and achieved a record high.
The project as the first domestic installation of a large LNG storage tanks, the unique nature of their construction methods and welding materials, special construction company once to four Department of the Shenzhen project technical staff has become more difficult. To overcome this difficulty, the four construction companies since 2004 successfully completed up to 21 9% Ni steel welding procedure, which makes the original assessment of need to get outside for hands in the four successful completion of the construction and subsequent T-1101 and No. T-1102 tank construction to maintain more than 98% of the welding pass rate, get a foreign project supervision and the owner of the high degree of recognition.
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Currently, the key to the construction phase of the T-1103 in the number of LNG tank construction, four technical quality of the construction company staff of "quality first, continuous improvement." The quality, strictly in the construction process, layers of control site construction quality, especially in the 9% Ni steel welding process, the strict control of welding parameters and welding process discipline to ensure the progress of construction under the premise of making a welding pass rising, now 9% Ni steel welding passing rate reached 99.13% of the best in history, and therefore subject to the total package, the owners and foreign experts alike, the continuous improvement of welding pass rate also shows that China has fully mastered the 9% Ni steel welding, as in China construction industry overall open foreign LNG tank construction market has far-reaching significance.
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