When SS systems are fabricated, the welding process destroys the existing passive film and compromises the metal's ability to ward off the corrosive process.
铬镍不锈钢系统建立后，焊接处理会破坏存在的钝化膜，并降低材料抗腐蚀的性能。
They had some very good welders and we are satisfying with their welding quality, specially with SS material.
他们拥有优秀的焊工，我们对其的焊接质量，特别是不锈钢的焊接质量非常满意。
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