Color: Orange,yellow, or customized colors like red, blue, green, black, etc. Material: PE shell with PU foam inside, galvanized or stainless steel fasteners. Cusomized Design: Available. Dredging pipefloat are made from high wear resistance PE by rotational molding technology. One complete dredging pipefloat consists of two halves filled with PU foam which are connected by galvanized bolts, nuts and washers. The reasonable structure makes the dredging pipefloat perform well in tough dredging condition.