摘要
西气东输工程建设已经全面展开,高压、超高压管道逐步深入到城市管网。管道安装中焊接是整个施工中最为重要的环节,由于管材成分的差别,所采用的焊接工艺方法不同,焊缝缺陷往往也是五花八门。文章主要就射线底片评定过程有关事项进行讨论。
High pressure or ultrahigh pressure pipelines are gradually used in gas networks. Welding is the most important process in whole pipeline laying project. Weld flaws caused by welding process vary with pipe’s material. Welding processes evaluation items of welded-line negative are expatiated in this paper.
出处
《上海煤气》
2004年第4期24-27,共4页
Shanghai Gas
