燃气管道施工中的向下立焊工艺

摘要

结合城市燃气管网工程中向下焊工艺的应用,着重介绍了向下立焊工艺技术特点、工艺参数的选择及操作工艺,并结合施工中的焊缝检测结果,对向下立焊中常见的焊接缺陷进行了分析.%According to the application of downward welding technology in the project of city gas pipeline, its technical characteristics, the selection of welding parameters and the operation process were introduced. The common welding defects in downward welding were analyzed by combining with the welding test results in construction.