andykidd 发表于 2017-3-28 11:21:36

EN 10270-1 2001

EN 10270-1 2001 Steel wire for mechanical springs Part 1 Patented cold drawn unalloyed spring steel wire

admin 发表于 2017-3-28 16:31:06

谢谢您的分享,金币已奖励!
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