BRANCH PIPE JOINT FOR HIGH PRESSURE FLUID

PROBLEM TO BE SOLVED: To provide a durable branch pipe joint for pressure fluid which enhances the fatigue strength against internal pressure in a branch pipe connection section. SOLUTION: This branch pipe joint is constituted in such a way that a plurality of branch holes 1-2 are spacedly arranged in a peripheral wall section in the axial direction of a joint body 1 with a flow passage 1-1 along the axial center, and a pressure receiving seat face 1-3, which opens facing outside and is connected to a branch pipe 2 having a flow line communicating to each flow passage, is formed in the peripheral faces of the branch holes, and a nearly conical pressure seat section 2-3 is made to about on and engaged with the end section of the branch pipe 2 and is connected thereto by the threading engagement and tightening of the cap nut 3-5 incorporated in the branch pipe 2 beforehand along with the pressure at a connection head section. In this case, branch holes 1-2, which are made elliptic, are provided eccentrically in the direction of the diameter of the flow passage of the joint body 1.