Cylindro-conical pipe joint
作者： Jean Duret , Charles Soulier , Georges Trouillet
DOI:
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摘要: Separable joint for oil well pipe in which both the male and female members have a cylindrical threaded section adjacent frusto-conical thread section, member has an internal shoulder against end of seals.
lens.org 参考文章(5)
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Thomas L Blose, Conically tapered screw-type casing joint with metal-to-metal seal ,(1957)
George V Woodling, Sealed threaded connection ,(1954)