CONNECTION METHOD AND CONNECTION STRUCTURE OF PLASTIC PIPE

摘要

Methods for connecting, to each other, the ends of plastic pipes formed by inserting fiber-reinforced material between tubular inner and outer layers formed of resin, the method for connecting, to each other, the ends of the plastic pipes having spirally wound fiber-reinforced material inserted therein comprising the steps of cutting off the outer layer from the ends of both pipes, unwinding the fiber-reinforced material to expose the inner layer, butt-fusing the inner layers to each other, desirably, re-winding the unwound fiber-reinforced material on the outer peripheral surfaces of the inner layers, and winding another fiber-reinforced material on the outer peripheral surfaces thereof so as to lie across the ends of both pipes; the method for connecting, to each other, the ends of the plastic pipes axially arranged fiber-reinforced material inserted therein comprising the steps of cutting off the outer layers from both ends of the pipes, inversing the fiber-reinforced material to expose the inner layers, butt-fusing the inner layers to each other, returning the fiber-reinforced material again to the outer peripheral surfaces of the inner layers, and disposing another fiber-reinforced material on the outer peripheral surfaces thereof so as to lie across the ends of both pipes.