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1. Personnel requirementsWelders engaged in the welding of this project shall be trained and qualified according to the corresponding welding methods before starting construction. At the same time should have a certain practical experience and technical level.Non-destructive testing of welds must be

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This paper analyzes the construction key points in each process of long-distance pipeline construction, which plays a positive role in understanding the construction technology of long-distance pipeline and managing the construction quality of long-distance pipeline.