Title:
JOINT FOR NOVEL STEEL PIPE OR ALLOY PIPE, WHICH RESIST HIGH PRESSURE AND IN WHICH BAKING PHENOMENON IS DIFFICULT TO BE GENERATED
Document Type and Number:
Japanese Patent JPS58152994
Kind Code:
A
Abstract:
The invention relates to a joint for steel pipe, which is oil-tight at high pressure, being of the type including at least one pair of slightly conical sealing surfaces arranged at at least one end of the male member or of the female member, and is insensitive to seizure. This joint is characterized by the fact that the first contact 5 of the sealing zone lying at the end of one member occurs against the corresponding sealing surface of the other member and that at the time of this first contact the taper of the sealing surface which is situated at the end of one of the members of the joint is less than the taper of the corresponding sealing surface which is situated on the other member of the joint, the sealing surfaces at the time of tightening the joint, becoming applied against one another with a contact pressure sufficient to ensure oiltightness.
More Like This:
Inventors:
BERUNAARU PURAKAN
Application Number:
JP2548283A
Publication Date:
September 10, 1983
Filing Date:
February 17, 1983
Export Citation:
Assignee:
VALLOUREC
International Classes:
E21B17/042; F16L15/06; F16L15/00; (IPC1-7): E21B17/08; F16L15/00
Domestic Patent References:
| JPS5336024A | 1978-04-04 | |||
| JPS5211767A | 1977-01-28 |
Attorney, Agent or Firm:
Yoshio Kawaguchi