PIPING CONNECTING STRUCTURE COMPRISING MULTI-DRILLED PIPE AND A PLURALITY OF BRANCH PIPES, AND BRANCH PIPE FORMING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a piping connecting structure capable of making fluid flow smoothly between a multi-drilled pipe and branch pipes connected to the multi-drilled pipe.

SOLUTION: Inserting ends of the branch pipes 10 are inclined with respect to the insertion direction of the branch pipes 10 into the multi-drilled pipe 1. Thereby, when each of the branch pipes 10 is inserted into a communication hole 4 at the end of the multi-drilled pipe 1, because the insertion ends of the branch pipes 10 are inclined, passage resistance of the insertion parts can be reduced in comparison with a case where the insertion ends are orthogonal to the insertion direction. Therefore, fluid can be made to smoothly flow between the multi-drilled pipe 1 and the branch pipes 10.

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