DISTRIBUTING JOINT

PROBLEM TO BE SOLVED: To attain a resin distributing joint which is prevented from cracking easily against excessive stress onto a resin joint by using superior resin as inner layer resin in hot-water resistance and chemical resistance to outer layer resin. SOLUTION: The tube wall of a distributing joint is constituted of a resin inner layer (a) and a resin outer layer (b) which is a body for the inner layer (a). The resin inner layer (a) is provided over the whole fluid contact surface and formed integrally with the resin outer layer (b) by mutual resin welding or with adhesives. As inner layer (a) resin, the resin is used, which is superior to outer layer (b) resin in hot-water resistance and chemical resistance, and restrains from generating stress cracking. For example, as inner layer (a) resin, polyether ether ketone, polyphenine sulfite, or the like is used. As outer layer (b) resin, polyamide resin, polyether imido resin or the like is used.