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本文通过在西气东输二线工程X80管线钢焊接的实践,确定了成熟的打底焊焊接工艺,并在实际施工过程中得到了认可,并推广应用。
Through the practice of X80 pipeline steel welding in the second-West-East Gas Pipeline project, the paper has determined the mature backing welding technology and has been approved and popularized in the actual construction.