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简介:NJY9NP91DGGDV202l不锈钢复合管 化学成分: %C ≤0.15 Mn~7.5-10 , P≤0.06 S ≤0.03 Ni ~ 4.0-6.0 Cr~ 17.0-19.0l不锈钢复合管分类: 环保不锈钢无缝管,工业管,精密管,
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