... industrial platform, ladder pedal, balustrade, channel floor, side road railway bridge, aerial platforms, drainage ditch cover, manhole covers, road ... as a residence outside the window, balcony guardrail, highway, rail fence etc. Common specifications: No. Item Description 1 ... A36, A1011, A569, Q235, S275JR, SS304, Mild steel & Low carbon steel, etc 5 Surface Treatment Black, self colour, hot dip ...