cc523pate 发表于 2017-11-16 19:54:15

BS 7668:2016 Weldable structural steels – Hot finished structural hollow secti

BS 7668:2016 Weldable structural steels – Hot finished structural hollow sections in weather resistant steels – Specification


admin 发表于 2017-11-17 11:10:46


谢谢您的分享，金币已奖励!

z2606483 发表于 2017-11-18 16:04:32

BS 7668:2016 Weldable structural steels – Hot finished structural hollow sections in weather resistant steels – Specification

hgundas 发表于 2019-10-10 00:18:35

謝謝樓主的分享！！！！:)
页: [1]
查看完整版本: BS 7668:2016 Weldable structural steels – Hot finished structural hollow secti