... 2.Elegant design 3.Strong, weather proof, with long lifespan Aluminum Alloy Gangway With Rail:1.Structure and Handrail: Main frame and ... are made of 6061 marine aluminum alloy profiles and tubes2.Decking: 24mm thick board with grooved anti-slippery surface fixed by ... span,a shortened installation time and much lower maintenance cost.4.Strong Loading capacity,safe and stable,environmentally friendly,UV ...