焊管Issue(5)：62-65,72,5.
油气管道环焊缝焊接施工应关注的问题及建议
Focus on Problems and Suggestions of Oil and Gas Pipeline Circumferential Weld Welding at Site Construction
摘要
Abstract
Along with steel pipe strength grade increasing applied for pipeline construction, the circumferential weld increasingly become the key link of pipeline welding construction. In this article, it put forward some focus on problems in site welding construction of oil and gas pipeline, such as butt welding, repair welding, winter construction in alpine region and circumferential weld stress condition under particular geological conditions, the term definition of butt welding and repair welding were introduced. It compared standard requirements and practical experience in winter construction at home and abroad, analyzed stress state of circumferential weld under different load, and gave corresponding welding suggestions, combining with present pipeline construction status, such as adopting up-welding in root welding; For repair welding, the welding is not applicable using self-protection flux-cored wire;For winter welding construction in pipeline, it can be executed under the condition of protection preparation;Circumferential weld undergoing side stress should adopt high and strength matching welding procedure.关键词
焊接/油气管道/环焊缝/焊接施工/焊接质量Key words
weiding/oil and gas pipeline/circumferential weld/welding construction/welding quality分类
矿业与冶金引用本文复制引用
隋永莉,曹晓军,胡小坡..油气管道环焊缝焊接施工应关注的问题及建议[J].焊管,2014,(5):62-65,72,5.基金项目
中国石油天然气股份有限公司重大科技项目（2012E-2801-06）。 （）
