THERMALLY FUSED CONNECTION OF POLYETHYLENE PIPE

摘要

PROBLEM TO BE SOLVED: To facilitate operations and to eliminate the need for skill by providing a recess in the center of the outer surface of each polyethylene short pipe, locating the butting parts of the polyethylene pipes on the recesses, and winding a corrosion resistant tape on the outsides of the butting parts. SOLUTION: Each polyethylene short pipe PJ has a heating wire 8 built in near the outer surface of its cylindrical pipe main body 7, and a circumferentially extending recess 9 is provided in the center of the outer surface. The heating wire 8 is formed into non-inductive windings and buried in the pipe main body 7, with its terminal raised from the center recess 9 and extended to the outside through the space between the butting parts of the polyethylene pipes P, P to enable a connection with a power supply. The butting parts of the polyethylene pipes P, P are located in such recesses 9, and a corrosion resistant tape is tightly wound from the outside to ensure a thermally fused connection with the tightening force used in winding the corrosion resistant tape 5.