... ,Platform:The platform is shaped by 2.2 mm-thick cold-roll steel sheet, with bores of 6 mm in diameter. Conforming to the European ... is made by steel pipe with diameter of 114 mm, thickness of 2.2 mm, quality and technical standard of which have met the ... of steel pipe with diameter of 60 mm, 48mm, 38mm, 32mm, 28mm, thickness of 2.5 mm, quality and technical standard of which ...