对管道焊缝根部内凹与根部未焊透的分析

Humble Opinion about the Sinking Towards inside and welding Not Thoroughly in the Root of a Piping Weld Seam

多年的工作实践表明，管道焊缝的根部内凹与根部未焊透是两类性质根本不同的缺陷，在检验中正 确鉴别这两类缺陷对保证焊接质量、确保安全生产是非常重要的。

Author's long practice have proved that sinking towed inside and welding not thoroughly in the root of a piping weld seam is totally different. Identifying the two defects in examining is very important for guarantee the welding and safe production.