欧洲型钢标准

haha,i take my european standard for shape steel here to share with you!
hope it is very available for us to know european shape steel size during design.
welcome you to write your comments/instructions!
thanks!
haha,it is very fine,none post it here until now,only me!
so we can exchange some data to improve our professional skill(including professional english)!
come on.work hard!

but it is edition in english,so hope you come here and we can acquire these material,at the same time,we can practise our english together to make our english more perfect!
welcome you to write your comments/instructions!
thanks a lot!