... . materials1) Upright column:galvanised steel pipe with diameter of 114 mm, wall thickness of 2.2 mm2) Platform:2.2 mm-thick cold ... Iron part:galvanised steel pipe with diameter of 60 mm, 48mm, 38mm, 32mm, 28mm, wall thickness of 2.5 mm4) Fittings:high strength aluminium ... South Korea. With a wall thickness of above 6 mm, the plastic parts of bright color own anti-ultraviolet property of grade 8, which ...