F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 15/04 (2006.01) C10M 103/02 (2006.01) C10M 103/04 (2006.01) C10M 103/06 (2006.01) C10M 145/20 (2006.01) C10M 149/18 (2006.01) E21B 17/042 (2006.01)
Patent
CA 2563213
A threaded joint for a steel pipe comprises a pin and a box with a contact surface having a threaded part and a unthreaded metal contact part, wherein a solid lubricating film containing one or more kinds of lubricating powders selected from graphite, mica, calcium carbonate and kaolin, a copper powder, and a binder is formed on at least one contact surface of the pin and the box. An object of the present invention is to provide a threaded joint for a steel pipe which allows for repeated fastening and loosening of a threaded joint without adversely influencing on a human body and environment, and is excellent in galling resistance, rust preventing property and gas tightness.
Un joint fileté pour un tuyau en acier, qui sans causer aucune influence défavorable sur la santé des humains et l~environnement, permet la fixation/ défixation répétée de joint fileté et excelle en propriété de lubrification antigrippage, résistance à la corrosion et à l~étanchéité à l~air. Étant fourni est un joint fileté pour tuyau en acier composé d~une tige et d~une boîte ayant au moins un côté avec une portion filetée ou une portion de contact avec le métal non filetée équipée d~une solide couche de lubrifiant comprenant un liant, du cuivre en poudre et au moins une poudre lubrifiante choisie parmi le graphite, le mica, le carbonate de calcium et le kaolin.
Goto Kunio
Imai Ryuichi
Minami Junichi
Ogawa Yasuhiro
Gowling Lafleur Henderson Llp
Sumitomo Metal Industries Ltd.
Vallourec Mannesmann Oil & Gas France
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