Fourth construction company carried out LNG receiving station pipeline welding construction

Recently, the construction of the main line of the high-pressure external pipeline gallery of the Tianjin Liquefied Natural Gas (LNG) Phase II project of a company undertaken by the Fourth Construction Second Engineering Company has officially opened the high-pressure pipeline welding construction of the project.
Dry prologue
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The main pipeline of this pipeline gallery is the X70 main pipe and auxiliary branch lines of the F gallery.
The pipe material is X70, the pipe diameter is 1016 mm, the pipe wall thickness is 55 mm, the design pressure is 15.
8 MPa, and the total diameter is 4000 inches.
The pipe is 7 meters long and weighs about 10 tons.
It is difficult to hoist and assemble, and it only has a construction period of more than 40 days
.

In order to complete the task smoothly and efficiently, the project department carefully deployed in the early stage of construction and actively coordinated with the material supply unit to send the X70 pipe to the training center for welding process evaluation 30 days in advance.
At the same time, it was notified and filed at the special inspection institute to ensure that the welding work was in compliance with laws and regulations
.

At present, the project department has carried out the grouping and bottoming of 6 welds, and each group pair is carefully confirmed by the project welding quality inspector and the image is saved to ensure that the previous process is qualified before the next process is welded, from the source Guarantee the welding quality

(Qu Zhaogui Fu Xinyu)