Highly-tight threaded joint
作者： Aleksej Viktorovich Emel'Janov , Jurij Fjodorovich Emel'Janov , Pavel Nikolaevich Sidorenko , Vladimir Petrovich Aldohin , Mihail Noehovich Lefler
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摘要: A highly-tight screw joint comprising internal and external mating elements with conical surfaces used in connection oil gas wells. The are provided a thread supporting embedded faces. sealing unit is made the form of wedge on side small diameter. consists parts elements. formed by radial face at an angle 25°-35° to normal axis. surface 10°-25°
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