(1) Injection molded UPVC bonded pipe fittings;
(2) injection molded UPVC bonded variable diameter crimping pipe joints;
(3) adapter;
(4) UPVC elastic sealing ring socket joint for injection molding;
(5) Injection molded UPVC elastic sealing ring and flange connection adapter;
(6) Pipe fittings formed by secondary processing of UPVC pipes.