| 摘要 |
PROBLEM TO BE SOLVED: To provide a service tee wherein a resin film to be formed between a bore hole of a joint body and a through hole of a branch pipe take-out part is eliminated. SOLUTION: A core D having a male screw for forming a bore hole having a female screw and a core E for forming a through hole of a branch pipe take- out section are provided. The core D is provided with a recess in which the tip of the core E fits. When the core D and the core E are to be set in a mold, the core E is protruded up to the inside of a cylindrical part of a joint body and fitted in the recess of the core D in a crossing manner. Thereafter, a molten resin is injected into a cavity to be formed with other mold so as to form a service tee body. Thereafter, the core E is removed from the joint body and the core D is turned in a reverse screw direction so as to remove it from the bore hole. |
