Raw materials: high quality steel/ hot-galvanized steel ( dn140 / dn89) Powder coating: zinc-rich premier and powder coating( 2 times ) Sand blasting procedure ( before powder coating) Welding technique ( arc-welding, carbon dioxide welding, mixed-gas welding) earing : nsk Uv eu standard Main pole thickness is 3mm, portable parts thickness is 2.75mm. the main-pole cover is made of aluminium and the inside is a galvanized pipe. Stainless screw and nuts outside, galvanised inside. the seats are pe . the pedals are epdm coated to ensure grip 1600*760*1120mm
