![]() |
有个人说45# 钢是优质碳素工具钢,但绝对不属于模具钢。这个说法对否 |
| ||
| ||
| ||
Archiver|手机版|小黑屋|机械社区 ( 京ICP备10217105号-1,京ICP证050210号,浙公网安备33038202004372号 )
GMT+8, 2025-7-22 05:23 , Processed in 0.062062 second(s), 12 queries , Gzip On.
Powered by Discuz! X3.5 Licensed
© 2001-2025 Discuz! Team.