large area welded 大面积焊接
For the bar and wire endless rolling process, the welded area is required to have similar properties as the base metal.
棒线材的无头轧制工艺，要求焊接部位与基体具有同样的性能。
Protection measures such as installation of desulfurization unit to reduce H_2S, improvement of tank operating conditions and application of sprayed aluminum on welded area etc are presented.
同时提出了具体的防护措施，如增加脱硫装置以降低H_2S的浓度，改善压力容器工况条件，以及对焊缝部位采取喷铝措施等。
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