Egymams85 发表于 2018-11-22 02:33:28

ASTM A1 − 00 (Reapproved 2010)

Standard Specification for Carbon Steel Tee Rails
碳钢T形导轨标准规范

admin 发表于 2018-11-26 11:21:56

谢谢您的分享，金币已奖励!
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