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来源:上海五星体育频道手机在线直播观看    发布时间:2023-09-21 07:48:19

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  供给绷簧钢丝价格绷簧钢丝厂家绷簧钢丝各标准完全75号钢化学成分:碳(C)0.72~0.80锰(Mn)0.50~0.80镍(Ni)≤0.30硅(Si)0.17~0.37磷(P)≤0.035硫(S)≤0.035铬(Cr)≤0.25铜(Cu)≤0.2575号钢力学性能:抗拉强度 骲 (MPa)≥1080,...具体的介绍