... puncture wound by broken sawdust, rusty nails.DurablePontoon(floating bridge)is made from High Molecular Weight HDPE, with other ... layer : 325 kg /m2.Maintenance freeLifespan of pontoon(floating bridge) is above 15 years without any maintenance or repair. ... ball, pile guide etc. Applications of Xinyi modular floating bridge system includes floating docks, floating jetty,floating bridges,plastic ...