horizontal vertical position welding 平角焊
vertical position of welding 立焊位置 ; [机] 立焊 ; 火焰钎焊
upward vertical position welding 向上立焊
automatic tig vertical position welding 自动tig立焊
vertical down position welding 向下立焊
vertical up position welding 向上立焊
The cold cracking sensibility of high tensile pipeline-steel was studied by Ygroove cracking test using seven kinds of high cellulose electrode of vertical down position welding.
采用七种高纤维素型立向下电焊条，通过斜y坡口裂纹实验，对高强管线钢的冷裂敏感性进行实验研究。
The project position of welder qualification test for long transporting pipe depends on vertical down welding basically, which is namely fixed pipe with axis horizontal welding (5gx).
长输管道的焊工考试项目位置基本以向下焊为主，即水平固定全位置焊(5gx)。
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