SCREW COUPLING FOR STEEL PIPE

Provided is a threaded joint in which the outer peripheral face 31 of the pin nose 8 has a single tapered shape, the seal face 21 of the box 1 has an outwardly convex curved shape, and a seal point x p defined by the following equation is greater than or equal to 0.2 inches, x p = ˆ« x 1 x 2 ¢ p ¢ x...

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Bibliographische Detailangaben
Hauptverfasser:	TAKANO, JUN, NAGAHAMA, TAKUYA, YOSHIKAWA, MASAKI, KAWAI, TAKAMASA, SONOBE, OSAMU
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	Provided is a threaded joint in which the outer peripheral face 31 of the pin nose 8 has a single tapered shape, the seal face 21 of the box 1 has an outwardly convex curved shape, and a seal point x p defined by the following equation is greater than or equal to 0.2 inches, x p = ˆ« x 1 x 2 ¢ p ¢ x † x F F = ˆ« x 1 x 2 ¢ p † x , where p is a contact face pressure, x is a distance from an end of the pin in a pipe axis direction, and x 1 and x 2 are respectively a lower limit and an upper limit of a domain of x corresponding to the seal portion.