... .Inner diameter: 508/610mm 8.Width of the color coated steel coil: 600mm to 1250mm.9.Zinc coating of the base ... galvanized steel material: 60gm2 to 275m2.10.Packing:export seaworthy packing11.Coil ... and so on Indoor:door,isolater,frame of door,light steel structure of house,sliding door,folding screen,ceiling,internal decoration ...