The field application shows the welding seam formation is perfect and the welding qualification rate is 96%.
现场应用表明焊缝内成型美观，焊缝合格率为96%。
This paper introduces some concepts and calculation methods, such as primary qualification rate of welding, equivalent welded joint and qualification rate of equivalent welding.
介绍了焊接一次合格率、当量焊口、当量焊接合格率等概念及其计算方法。
After testing 640 welds, the once qualification rate reaches 99.5 %, that shows the welding process and method are effective and feasible.
按照所制订的焊接工艺和方法共焊接各种规格焊口640道，探伤一次合格率为99.5%，证明该焊接工艺和方法是可行的。
Taking the processing the welding seam qualification rate can be increased and also ensured the welding quality in gas piping construction.
采用此工艺可提高焊缝检验合格率，保证燃气管道施工的焊接质量。
Taking the processing the welding seam qualification rate can be increased and also ensured the welding quality in gas piping construction.
采用此工艺可提高焊缝检验合格率，保证燃气管道施工的焊接质量。
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