F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
285/63
F16L 9/14 (2006.01) F16L 15/00 (2006.01) F16L 58/18 (2006.01) E21B 17/042 (2006.01)
Patent
CA 1238352
OIL WELL PIPE JOINT Abstract of the disclosure An oil well pipe joint comprising a metal-to-metal sealing portion without thread is disclosed. A metal-plated or resin-coated layer exhibiting improved resistance to galling is provided on the outer peripheral surface of a thread-free lip portion which constitutes part of the metal-to-metal sealing portion on an externally-threaded member. At the metal sealing portion, satisfactory sealing properties are maintained under severe corrosive conditions, enabling the joint to be connected and disconnected over 10 times, and usually over 25 times.
477362
Fukui Kunihiro
Kawashima Hisakazu
Mase Toshiro
Morita Yoshiyasu
Nishihara Minoru
Osler Hoskin & Harcourt Llp
Sumitomo Metal Industries Ltd.
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