... weld bolt 焊接螺栓 weld contamination 焊接杂质 weld groove 焊缝坡口 ...
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The test is used to detect surface iron contamination, i. e., iron salt residue from pickling, iron tool scratches on the stainless steel surface, iron deposits at weld areas, and iron oxides.
该检测用于检测表面的铁的污染,如浸酸中铁盐残留,不锈钢表面的铁制工具的刮痕,焊接区的铁沉积以及铁的氧化物。
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