balcony cover 1.Grade:SGCC,PPGI CGCC,SGLCC,etc 2.Thickness:0.3-1.0mm 3.Width:700-1,250mm 4.Color : ALL RAL... high quality galvanzied balcony cover Material: high quality low carbon steel Types: serrated and plainFinishes: electro galv, hot dipped galv, according to the difference surface treatment. common specification: Bearing BarsCross BarsType 19-W-4Type 19-W-2Type 15-W-4Type 15-W-23/4 x 1/81 ...