Abstract: A process for treating a pin having an external threaded portion and a box having an internal threaded portion wherein the process provides a threadable joint having a high galling resistance. One embodiment of the present invention includes applying a lubricant on the threaded portion of at least one of the pin and box. The threadable joint is made up by threadably engaging the threaded portions of the pin and box to a recommended torque according to the American Petroleum Institute and then breaking out the threaded joint. The making up and breaking out step with lubricant applied on the threaded portion of at least one of the pin and box is performed a plurality of times. One of the threaded portions of the pin and box is then case hardened. The threadable joint made from this process is highly resistant to galling without the requirement of any lubricant.

Abstract: A process for treating a pin having an external threaded portion and a box having an internal threaded portion wherein the process provides a threadable joint having a high galling resistance. One embodiment of the present invention includes applying a lubricant on the threaded portion of at least one of the pin and box. The threadable joint is made up by threadably engaging the threaded portions of the pin and box to a recommended torque according to the American Petroleum Institute and then breaking out the threaded joint. The making up and breaking out step with lubricant applied on the threaded portion of at least one of the pin and box is performed a plurality of times. One of the threaded portions of the pin and box is then case hardened. The threadable joint made from this process is highly resistant to galling without the requirement of any lubricant.

Abstract: A process for treating a pin having an external threaded portion and a box having an internal threaded portion wherein the process provides a threadable joint having a high galling resistance. One embodiment of the present invention includes applying a lubricant on the threaded portion of at least one of the pin and box. The threadable joint is made up by threadably engaging the threaded portions of the pin and box to a recommended torque according to the American Petroleum Institute and then breaking out the threaded joint. The making up and breaking out step with lubricant applied on the threaded portion of at least one of the pin and box is performed a plurality of times. One of the threaded portions of the pin and box is then case hardened. The threadable joint made from this process is highly resistant to galling without the requirement of any lubricant.

Abstract: Electric connector, including first and second connector parts (10, 20) which can be coupled together and which comprise respectively first and second contact elements (11, 21) and first and second supports (1a, 3a) which support respectively the first and second connector parts and can be assembled together by means of screwing engagement. The first and second connector parts comprise, respectively, first and second support ring structures (13, 23) which carry the first and second contact elements respectively. Pins and corresponding locating and drive means (31, 32) are designed to make the first and second support rings structures rotationally integral during relative engagement of first and second supports and cause first and second contact elements to align with one another. The first connector part also comprises a base structure (15) on which the first support ring structure is movably mounted. Cam members (18) are arranged between base structure and support ring structure.

Abstract: Electric connector, including first and second connector parts (10, 20) which can be coupled together and which comprise respectively first and second contact elements (11, 21) and first and second supports (1a, 3a) which support respectively the first and second connector parts and can be assembled together by means of screwing engagement. The first and second connector parts comprise, respectively, first and second support ring structures (13, 23) which carry the first and second contact elements respectively. Pins and corresponding locating and drive means (31, 32) are designed to make the first and second support rings structures rotationally integral during relative engagement of first and second supports and cause first and second contact elements to align with one another. The first connector part also comprises a base structure (15) on which the first support ring structure is movably mounted. Cam members (18) are arranged between base structure and support ring structure.