... , tube slides, roofs, decks, panels, column, ladders and so on.2. materials1) Upright column:galvanised steel pipe with diameter of 114 mm, wall ... the European standards of EN11763) Iron part:galvanised steel pipe with diameter of 60 mm, 48mm, 38mm, 32mm, 28mm, wall ... mm or 16 mm in diameter. The knots are mated with round aluminium alloy fasteners3. production technology: rotational moulding. 4. ...