The welding quality of field-welded girth joints of long-distance oil and gas transmission pipelines is the key to the quality and service life of pipelines.
油气长输管线现场环焊缝接头的焊接质量是决定管线质量、寿命的最根本要素。
The welding quality of field-welded girth joints of long-distance oil and gas transmission pipelines is the key to the quality and service life of pipelines.
油气长输管线现场环焊缝接头的焊接质量是决定管线质量、寿命的最根本要素。
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