青春无悔 发表于 2016-1-15 15:07:19

ASTM A563-07a Standard Specification for Carbon and Alloy Steel Nuts

ASTM A563-07a Standard Specification for Carbon and Alloy Steel Nuts 碳素钢和合金钢螺母标准规范


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admin 发表于 2016-1-18 11:43:36

谢谢您的分享,金币已奖励!
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