... :Anti-sliding,anti-water,children can play safely and happily6)Screw:All the screws are No. 304 stainless steel material (GB ... , in line with the GB/T 4454-1996 requirements, plastic 6 mm thick wall above, colour is gorgeous, resistance to ultraviolet ... pipe, Ø25 mm, thickness of 2mm steel. 5)Fastener and Screw:Use high strength fastener disposable aluminum alloy casting process, edge ...