Pipe joint

Details Pipe joint Pipe joint

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 15/06 (2006.01)

Patent

CA 2411447

A pipe joint formed by screwing a pin portion having a tapered male thread formed on the outer peripheral surface of the end of a pipe into a box portion having a tapered female thread formed on the inner peripheral surface of the end of a pipe or a short pipe so as to threadingly engage with the tapered male thread, the pipe joint having the following shape: clearance C between thread stab flanks: 0.5 - 1.0 mm thread stab flank angle 8: 15 - 60 degrees thread crest surfaces and thread root surfaces: parallel to the pipe axis radius R of stab flank corner portions of male thread: 1.0 - 1.25 mm In addition, the taper of the incomplete thread portion of the pin portion is preferably 0.96 - 0.90 times the nominal taper of the complete thread portion.

Cette invention concerne un joint de tuyau présentant un dégagement (C) côté manchon de 0,5-1,0 mm, un angle de filetage côté manchon ( theta ) de 15-60, avec des faces supérieure et inférieure du filetage parallèle à un axe, et un rayon de congé (R) au niveau du coin de manchon à filetage mâle de 1,0-1,25 mm. Une partie mâle à filetage conique formée dans la surface périphérique extérieure de l'extrémité d'un tube vient se visser dans la taraudage conique dans la surface périphérique intérieure de l'extrémité du tube ou d'un tronçon de tube, la région filetée incomplète de la partie mâle correspondant de préférence à 0,96-0,90 fois le filetage de référence de la partie filetée complète.

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