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Oil well pipe joint - with metallic sealing contact by convex and conical sections both sides of taper thread
Oil well pipe joint - with metallic sealing contact by convex and conical sections both sides of taper thread
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机译:油井管接头-锥螺纹两侧的凸部和圆锥部具有金属密封接触
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摘要
A threaded joint for oil well pipes has at the inner end of the female taper thread an unthreaded conical section and at the outer end a convex section. The former makes up a seal with a contacting convex section at the outer end of the male taper thread, and the latter forms a seal with an unthread conical section of the male taper thread. Semicircular grooves between thread and conical part assist the simultaneous engagement. This results in a reliable metal-to-metal seal at both thread ends in which the lateral seals are assisted simultaneously engaged face contacts.
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