Shandong Zerchen Energy Technology Co., Ltd.

Spring Steel
Gear steel

Gear steel

Gear steel Grade:60Si2Mn;60Si2MnA;60Si2CrA;60Si2CrVA;55CrMnA;50CrVA;SUP9;SUP9A;SUP11A. Size:12-200mm Gear steel  MainGradeSizep align="center">Alloy structure steel&lgt;</td>GB/T3077-199920Mn2-45Mn220Cr -40Cr20 CrMo...



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