Threaded pipe joint

Details Threaded pipe joint Threaded pipe joint

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 15/06 (2006.01)

Patent

CA 2483934

Threaded joint for pipes consisting of a male member (1) and a female member (2), which are provided on the outer. and inner surfaces respectively with two threading portions .presenting a lead-in flank .szlig. such that 10~ <, .szlig. < 25~, an abutment surface (9) being present at, the end of said male member for abutment to a corresponding annular abutment surface (10) of the female member. The lead-in flanks of thb male (1) and the female (2) members, upon make-up and with joint unloaded leave a gap (in the direction parallel to the axis (21) of the joint) varying from 0,01 td1,0,12 mm. The internal and external diameters D3 and D4 (in the portion not involved in the coupling with the female member) of said male member, the inner and outer diameters D1 and D2 of the abutment surface of the female member are linked by the relationship: (D22-D12)/(D42-D32) _> 0,5.

L'invention concerne un raccord fileté pour tuyaux qui comprend une partie mâle (1) et une partie femelle (2), disposées respectivement sur les surfaces extérieure et intérieure conjointement avec deux parties filetées présentant un flanc d'entrée .beta. de sorte que 10·<= .beta. <= 25· ; une surface de butée (9) se trouvant à l'extrémité de ladite partie mâle butant contre une surface de butée annulaire correspondante (10) de la partie femelle. Les flancs d'entrée des parties mâle (1) et femelle (2), après le montage et en prenant en compte l'espace formé par le raccord sans charge (dans la direction parallèle à l'axe (21) du raccord) varient entre 0,01 et 0,12 mm. Les diamètres interne et externe D3 et D4 (dans la partie non impliquée par le couplage avec la partie femelle) de la partie mâle ainsi que les diamètres interne et externe D1 et D2 de la surface de butée de la partie femelle étant liés par la relation: (D2?2¿-D1?2¿)/(D4?2¿-D3?2¿) >= 0,5.

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