红色部分怎么翻译?chipping or gouging and welding? The back-chipped welds, welding groove, and plate edges shall be magnetic particle or liquid penetrant examined to ensure that all cracks, pinholes, laminations, porosity, and other defects have been removed prior to welding on the reverse side. In cases where double welding is impractical (e.g., the groove joint backside is not accessible for chipping or gouging and welding ) the root pass shall be made by the Gas Tungsten Arc Welding (GTAW).查看更多3个回答 . 1人已关注