新东发株黑色模具弹簧 55CrSi超极重荷重东发规格极限压缩弹簧

黑色超极重荷重专属系列，最大压缩量20%。突破性采用55CrSi特种热处理强化工艺，专为极端超高压空间研发。提供超越常规系列的极限单位支撑力与抗疲劳极限，满足特殊重载及苛刻工业场景需求。

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颜色	红色, 蓝色, 绿色
尺寸	S, M, L

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