GB Spring Washer

Shanghai Jinrui owes total assets of RMB 50 million with area of 5000㎡. The business covers 18 countries from five continents.Now three branches of Shanghai Jinrui are Shanghai Xingrui Bolt Factory, Shanghai Xingrui Wire Steel Factory, and Shanghai Xingrui Hot heading Factory.GB standard Spring washer  covers the dimensional requirments of metric series Spring WASHER.The standard of GB standard Spring washer  is GB93 ,  The spring washer is widely used, mainly goes with bolt and screw. mostly made from steel 65Mn and steel #70 with high hardness. StandardGradeFinshGB9365Mn     white zinc      yellow zinc black oxide      H.D.G       Dacromet      ...#70


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