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带压开孔技术已经应用于旧管线改造/嫁接支路等工程,其中的焊接操作作为整个工程中唯一的动火环节其危险性及重要性不可小视。手工电弧焊的焊接方法有着(初期投资小,易操作,见效快,对环境条件要求低,节约能源等等)诸多自动焊接方法不可比拟的优势,本文着重介绍手工焊在管线不断输的条件下旧管线改造或嫁接支路管线的工程中的应用。
Pressurized open hole technology has been applied to the old pipeline reconstruction / grafting branch and other projects, of which the welding operation as the only part of the entire fire engineering aspects of its dangers and importance should not be underestimated. Manual arc welding with a (initial investment, easy to operate, quick, low demand on the environmental conditions, energy conservation, etc.) many automatic welding methods incomparable advantages, this article focuses on manual welding in the pipeline under the conditions of continuous transmission Application of old pipeline reconstruction or grafting branch pipeline project.