40CrMnM0材料PCrNi3M0A圆棒X40Gr13钢材2Gr11Mo1NiWVNbN棒料元园
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Y10Gr17元钢材2Gr11Mo1NiWVNbN_40GrMoV4-6_34GrNiMo8圆钢棒材
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