Patents
Sitemap › F16 - Engineering elements or units; General measures for producing and maintaining effective functioning of machines or installations; Thermal insulation in general › F16L - Pipes; Joints or fittings for pipes; Supports for pipes, cables or protective tubing; Means for thermal insulation in general › F16L 15 - Screw-threaded joints; Forms of screw-threads for such joints
Patents for F16L 15 - Screw-threaded joints; Forms of screw-threads for such joints (5,444)
11/2003
11/20/2003US20030213596 Tubular goods and liners
11/19/2003EP1362203A1 Improved tubing coupling
11/19/2003CN1457413A Screw threaded joint for continuous-profile tubes
11/18/2003CA2215044C Threaded pipe connection
11/13/2003WO2003093716A1 Threaded pipe joint
11/13/2003WO2003093714A2 Coupling assembly and method
11/13/2003CA2705380A1 Connection structure providing a sealed joint between fluid conducting parts
11/12/2003CN1455141A Method of producing connection hoop for petroleum steel pipe
11/06/2003WO2003090841A1 Tubing connector
11/06/2003DE20308384U1 Uni-muff in female thread has pre-cutting thread and finishing thread, after which is standard thread, and then sealing ring, and following this a standard pipe with standard thread upon which can be screwed new pipe section
11/05/2003EP1359359A1 Screw thread connector seal
11/05/2003EP1358421A1 Tubular threaded joint with trapezoid threads having convex bulged thread surface
11/05/2003CN2584997Y Quick joint coupler
11/04/2003US6641434 Wired pipe joint with current-loop inductive couplers
11/04/2003US6640903 Forming a wellbore casing while simultaneously drilling a wellbore
10/2003
10/30/2003WO2003089754A1 Pipe threaded joint
10/30/2003WO2003089162A2 Threaded connection especially for radially plastically expandable conduit
10/30/2003US20030201639 Medical tubing connector
10/29/2003EP1110019B1 Threaded connection of two metal tubes with high tightening torque
10/29/2003EP1070192B1 Two-step, low torque wedge thread for tubular connector
10/29/2003CN1125924C Sealing threaded pairing
10/28/2003CA2256553C Threaded joint for tubes
10/23/2003WO2003087645A1 Sealing device for a high-pressure sealing of line junctions
10/23/2003US20030197376 Threaded connection especially for radially plastically expandable conduit
10/22/2003CN1125259C 管接头 Fittings
10/16/2003WO2003085305A2 Replaceable corrosion resistant tool joint seal
10/15/2003EP1351792A1 Method and apparatus for a combined mechanical and metallurgical connection
10/15/2003EP1264068A4 Threaded spacer
10/15/2003CN2580261Y Convenient pipeline loose joint
10/15/2003CN1448706A Method of testing pipe thread adaptor inner / external screw thread surface contact status distribution
10/08/2003EP1350834A1 Composition for lubricating-film formation suitable for lubrication of screw joint
10/08/2003CN1123718C Screwed pipe adapter with high-resistance to over torque and pressure
10/02/2003US20030184084 Replaceable corrosion resistant tool joint seal
09/2003
09/30/2003US6626471 Double flex seal for tubular connection
09/25/2003WO2003078882A1 High torque modified profile threaded tubular connection
09/25/2003US20030178849 Hydraulic joint structure
09/25/2003US20030178847 Threaded connection makeup method
09/24/2003EP1346174A1 Pipe connecting device
09/24/2003EP0897504B1 Threaded tool joint with dual mating shoulders
09/23/2003US6622797 Apparatus and method to expand casing
09/18/2003WO2003076837A2 Wedgethread pipe connection
09/18/2003WO2003076758A2 Double shoulder oilfield tubular connection
09/18/2003US20030173090 Lubrication and self-cleaning system for expansion mandrel
09/18/2003CA2477335A1 Wedgethread pipe connection
09/17/2003CN2573082Y Quick microspray joint
09/17/2003CN1443290A Pipe integral threaded joint
09/16/2003US6620460 Adhering an anti-seize metallic film onto the surface of threads and coating the anti-seize protected threads with an environmentally friendly lubricating composition
09/12/2003WO2003074917A1 Pipe system and method for its manufacture
09/12/2003CA2477308A1 Pipe system and method for its manufacture
09/11/2003US20030168859 Wedgethread pipe connection
09/11/2003US20030168858 High torque modified profile threaded tubular connection
09/11/2003US20030168851 Double shoulder oilfield tubular connection
09/11/2003DE20309155U1 Pipe union extension adaptor for under-length pipe has insert with screw threads at both ends and slide fitting adjustable over given range
09/10/2003CN2572175Y Convenient pipe joint
09/10/2003CN1441873A Couplings for rotary drill strings
09/03/2003CN2570573Y Adjustable short joint
09/03/2003CN1440497A Tubular threaded joint capable of being subjected to diametral expansion
08/2003
08/28/2003WO2003071088A1 Drill member for rock drilling and a method for manufacturing the drill member
08/28/2003US20030160446 Threaded joint for steel pipes
08/28/2003US20030159764 Threaded joint for steel pipes and process for the surface treatment thereof
08/26/2003US6609735 Threaded and coupled connection for improved fatigue resistance
08/21/2003US20030155769 Coupling for rotary drill strings
08/20/2003EP1070193B1 Two-step, differential diameter wedge threaded connector
08/20/2003CN1437673A Tubular threaded joint with reinforced stop
08/20/2003CN1118656C Screw joint for oil well pipe
08/13/2003CN2566083Y Magnetic coding watermeter front valve locking connector
08/13/2003CN1436289A Pipe joint
08/06/2003EP1332308A1 Open type wedgethread connection
08/06/2003CN2564830Y Pipe loose joint with filter screen
07/2003
07/31/2003US20030144158 Threaded component for seizure-resistant tubular threaded joint
07/30/2003CN1433510A Taper threaded joint
07/24/2003WO2003060370A1 Method for making a sealed tubular joint with plastic expansion
07/24/2003WO2003060369A1 Threaded tubular joint comprising sealing surfaces
07/24/2003WO2003060198A1 A tubular member having an anti-galling coating
07/24/2003WO2003059549A1 Protective sleeve for threaded connections for expandable liner hanger
07/24/2003WO2002065012A9 Tubular threaded joint with trapezoid threads having convex bulged thread surface
07/24/2003DE20121756U1 Pipe connector has prefabricated, pre-attached mounting
07/23/2003EP1328701A2 System, method and apparatus for deploying a data resource within a threaded pipe coupling
07/23/2003CN1115466C Drill rod coupling
07/22/2003US6595557 Screw-threaded pipe joint
07/17/2003US20030132633 Joint with tapered threads
07/17/2003US20030132632 Socket and coupling piece
07/17/2003US20030131898 Method of assembling two carcass ends
07/03/2003US20030122378 Pipe joint
07/03/2003US20030122373 Locking arrangement for a threaded connector
07/03/2003US20030121558 Tube anchored to structure; pulling expansion structure through tube; well bore casing; controlling fluid flow
07/02/2003EP1261448A4 Method of assembling pipe joints
07/02/2003CN1427917A Threaded spacer
07/01/2003US6585299 Pipe connector
06/2003
06/26/2003US20030116966 Bullthread
06/25/2003EP1232322B1 Tube connection
06/25/2003CN1426147A Clock shape mouth and method for producing box buried underground
06/24/2003US6581980 Threaded connection with high compressive rating
06/19/2003WO2001029475A9 Open type wedgethread connection
06/19/2003US20030111838 Lubricating coating composition suitable for lubrication of a threaded joint
06/18/2003CN2556451Y Pipe joint
06/18/2003CN1111663C Tubular screw connector for oil field and forming method thereof
06/17/2003US6578880 Wedgethread pipe connection
06/17/2003US6578876 Plumbing connection and disconnection system and method
06/12/2003WO2003048623A1 Premium tubular threaded joint comprising at least a threaded element with end lip
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