win100xyhd 发表于 2011-10-22 20:44 有几句话,对统一英制螺纹,外螺纹有三种螺纹等级:1A、2A和3A级,内螺纹有三种等级:1B、2B和3B级,全部都 ...
举报
本版积分规则 发表回复 回帖后跳转到最后一页
QQ 咨询|手机版|联系我们|iCAx开思网 ( 粤ICP备2025491344号-1 )
GMT+8, 2026-1-27 05:59 , Processed in 0.039631 second(s), 11 queries , Gzip On, Redis On.
Powered by Discuz! X3.3
© 2002-2025 www.iCAx.org