Color sheet coil

Color sheet coil solid color sheet 什么意思? Galvanized steel coil和 GI Sheet有什么区别? 不锈钢英语 sheet , coil , pipe 有什么区别? coil sheet 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 懂英语的帮我看看这句话嘛意思啊?in single coil without fuse E27 and B22 in color box clear and frosted without ROHS In double coil with double fuse E27 and B22 in color box without ROHS Candle lamps E14 frosted and clear in clor box dou 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! 请问有谁知道coil OD ,coil color color color color color color Color. color