nable123 发表于 2020-11-7 22:05:27

DIN 1693_Rev 1973

Cast Iron with Nodular Graphite Unalloyed and Low Alloy Grade
非合金与低合金级别的球墨铸铁

admin 发表于 2020-11-16 08:43:44

谢谢您的分享,金币已奖励!
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