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公称直径d_1=90mm 环高=3.5mm 刮油边镀铬厚0.10~0.18(C_2)全部磷化 耐热弹簧(WF)的螺旋撑簧刮油边镀铬环
Nominal diameter d_1 = 90mm Ring height = 3.5mm Scratch edge Chrome plating thickness 0.10 ~ 0.18 (C_2) Spiral spring of all phosphating heat-resistant spring (WF) Oil scraping edge Chrome ring