"Secondary steel GI,EG, CR, HR. HDG, PPGI, CRNGO, steel sheet and coil”其中的“GI, EG,CR, HR, HDG, PPGI, CRNGO”是什么意思?或者说代表了钢材方面的那种材质吗?急!

Secondary steel GI,EG, CR, HR. HDG, PPGI, CRNGO, steel sheet and coil”其中的“GI, EG,CR, HR, HDG, PPGI, CRNGO”是什么意思?或者说代表了钢材方面的那种材质吗?急! GI STEEL COIL 和 PO STEEL COIL 和EG STEEL COIL Galvanized steel coil和 GI Sheet有什么区别? secondary secondary secondary gi secondary over-rolled steel sheet 我们的钢牌号是Q195,是几级钢? steel steel steel steel 求管件类型英语翻译快Now, I am looking for carbon steel: HR CR GA GI EG ETP coil, sheet, round bars, pipe, HMS1/2, HMS1, used rails, etc AYJackson Secondary secondary是什么意思 secondary是什么意思 secondary是什么意思 secondary effect secondary effect是什么意思