2013 发表于 2014-10-4 20:21:29

JIS B 1130-2012 Screw and washer assemblies made of steel with plain washers

JIS B 1130-2012 Screw and washer assemblies made of steel with plain washers - Washer hardness classes 200 HV and 300 HV


admin 发表于 2014-10-4 21:15:26

谢谢您的分享，金币已奖励
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