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42crmo厚壁鋼管化學成分\無錫無縫鋼管廠406*55過剩供給
42crmo無縫鋼管化學成分：根據標準GB/T 3077-1999,該鋼的化學成分(質量分數): C0.38% ~0.45%、Si0.17% ~0.37%、Mn0.50% ~0.80%、Cr0.90% ~1.20%、Mo0.15% ~0.25%、Ni≤0.030%、P≤0.030%、S≤0.030%
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