低氢型焊条管道全位置下向焊工艺

The Technology of Low Hydrogen Type Electrodes Used in Full Position Vertical Down Welding of Pipeline

本文对碱性低氢型焊条管道全位置下向焊的焊接工艺、坡口型式、对口尺寸、运条角度及方法等操作技术经验予以介绍，并推荐了焊接规范。

This paper introduces some technical experience in the welding procedure of full position vertical down welding of pipeline using alkaline low hydrogen type electrode,and also introduces its type of groove,width of root face,and the angle of electrode.Besides,it recommends welding code.