A36 HR Steel

A36 HR Steel HR and CR stainless steel coils 是什么 hr. hr 一种钢材,英文HRPO SHEET STEEL中的PO是什么意思?我知道HR是热轧, steel steel steel steel 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! ASTM-A36是什么材质 ASTM A36是什么材料 ASTM-A36[SHAPES]是什么意思 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 一题全英文的工程科学题Select standard rolled steel sections for beams and columns to satisfy given specifications.A 25 ft.long ASTM-A36 steel,W8×58 I-Beam is selected to be the column of the hoisting apparatus with fixed-free ends.For thi Steel and cast steel 什么是HR? HR是什么意思