To provide a resin made pipe fitting light and with no problem in strength to connect a tube with a large bore diameter and having a mechanical connecting part favourable in workability even when buried cast iron piping is used for a fitting for a renewing engineering method to replace it with the resin piping.
This is a resin made pipe fitting reinforcing strength of a socket part by providing a fitting main body of resin and installing a metallic reinforcing ring 30 on an outer surface of sockets 14, 15. It is possible to install the reinforcing ring 30 by covering an outer surface of a sealing member installing part of the socket and covering a fastening part with a push ring. The other end part of the fitting main body has characteristics that it is provided on a mechanical connecting part reinforcing strength of the socket part by installing the metallic reinforcing ring on the outer surface of the socket of the resin made fitting main body, a heat fusion connecting part to heat-fuse by heating and closely adhering it between itself and a resin pipe to connect together and an electric fusion connecting part to electrically-fuse with the resin pipe by heating of an electric wire by providing the electric wire on an inner peripheral surface of the socket to receive the resin pipe.
MIZUTANI SHIGERU
WADA MITSUO
