| 摘要 |
<p>PURPOSE: To provide a fluid supply and exhaust pipe that improves the extent of flowability and also excels others in terms of design by forming the cross section form of an inner hole of a main line into such a form as continuing a circular part and a flat part, and installing a connecting tapped hole piercing into the inner hole from the corresponding circumference in a flat surface of this inner hole, through which a supply and exhaust pipe of a fluid is easily and inexpensively manufacturable and, what is more, since any projections to both inner hole and circumferential surface sides are eliminated. CONSTITUTION: This is a fluid supply and exhaust pipe 1 being equipped with an inner hollor main line 2 serving as a main passage of fluid, a cross sectional form of an inner hole 2a of this main line 2 is made up into such a form as continuing a circular part 2b and a flat part 2c, and in response to a position of the flat part 2c of this inner hole, a connecting tapped hole 3, where various fluid utilizing apparatuses are connected, is pierced through into the inner hole from the outer boundary and thus this pipe is formed.</p> |
