Threaded joint of pipe and method for connecting same

A threaded joint wherein a relationship between shoulder angle parameters and thread taper angle parameters for a coupling and a pair of pins inserted from both ends of the coupling is defined by the following expression (1), and a tightening torque with which the threaded joint is tightened is 60%...

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Bibliographische Detailangaben
Hauptverfasser:	Yoshikawa, Masaki, Sato, Hideo, Goto, Seigo, Ozaki, Seiji
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS 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 PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A threaded joint wherein a relationship between shoulder angle parameters and thread taper angle parameters for a coupling and a pair of pins inserted from both ends of the coupling is defined by the following expression (1), and a tightening torque with which the threaded joint is tightened is 60% or more and 85% or less of a yield torque determined by the following expression (2):-1.5⁢°≤Δ⁢θ-Δ⁢ω≤2.°,(1)T=(TS+TD)⁢112(2)TS=ft⁢Pc⁢E72⁢(2⁢π⁢E7)⁢L4⁢12Pc=E⁢ρm2⁢((W2)2-(E72)2)⁢((E72)2-(d2)2)2⁢(E72)3⁢((W2)2-(d2)2)TD=Ym⁢AS(P2⁢π+Rt⁢fscos⁢Θ+Rs⁢fs).