| ReturnTo Theme-Group-Choice | Onelevelup |
| 3H013 | Non-disconnectible joints and screw-threaded joints | |
| F16L13/00 -15/08 | ||
| F16L13/00 | AA | AA00 NON-DISCONNECTIBLE PIPE JOINTS |
AA01 | AA02 | AA03 | |||||||
| . Compound joints | . Use of shape-memory alloys | . Others | ||||||||||
| F16L13/02 | BA | BA00 WELDED PIPE JOINTS |
BA01 | BA02 | BA03 | BA04 | BA05 | BA06 | BA07 | BA08 | BA09 | BA10 |
| . Direct joints (i.e., straight-line joints) | . . Pipes of similar materials | . . Pipes of dissimilar materials | . . Multi-layer pipes | . Prevention of corrosion of the welded joints | . . Thick welding joints | . . Joint coating after welding | . Welding at the pipe joints | . Welding tools | . Others | |||
| F16L13/08 | CA | CA00 SOLDERING OF PIPE JOINTS |
CA01 | CA02 | CA03 | CA04 | CA05 | CA06 | CA07 | CA08 | CA09 | |
| . Surface treatments for soldering | . . Surface roughening for soldering | . . Formation of grooves on the surface for soldering | . . Others | . Treament with deposited solder (i.e., soldering) | . Molds into which the solder is poured | . Prevention of the dripping of solder inside the pipes | . . Prevention of dripping from the grooves | . Others | ||||
| F16L13/10 | DA | DA00 ADHESIVE PIPE JOINTS |
DA01 | DA02 | DA03 | DA04 | DA05 | DA06 | ||||
| . Pipes of similar materials | . . Adhesive dissimilar treatments | . . . Roughening of adhesive surfaces | . Pipes of different types of materials | . . Use of multiple adhesive layers | . Others | |||||||
| F16L13/12 | EA | EA00 PIPES WITH SEALS MADE OF LEAD |
EA01 | EA02 | ||||||||
| . Pipes with lead seals | . Pipes with other types of seals | |||||||||||
| F16L13/14-13/16 | FA | FA00 PLASTIC PIPE JOINTS WITH VARIABLE SHAPES |
FA01 | FA02 | FA03 | FA04 | FA05 | FA06 | FA07 | |||
| . Caulking using shape-memory alloys | . Caulking using materials other than shape-memory alloys | . Packing inserted between caulking materials | . Direct caulking of pipe-to-pipe connections | . Caulking of joints to pipes | . Caulking tools and methods | . Others | ||||||
| F16L15/00 | GA | GA00 SCREW-THREADED PIPE JOINTS (I.E., NO ADDITIONAL SEALS) |
GA01 | GA02 | GA03 | GA04 | GA05 | GA06 | GA07 | GA08 | ||
| . Screw-threaded pipe joints for oil pipes | . Screw-threaded pipe joints for coated pipes | . Improvement of sealing | . . Improvement of sealing by screw design | . . Improvement of sealing by the butt end of the screws | . Prevention of corrosion of the screw units | . Reinforcement of the screw units | . Others | |||||
| F16L15/02 | HA | HA00 PIPE JOINTS ALLOWING LONGITUDINAL ADJUSTMENT BY USE OF LONG SCREW-THREADED JOINTS |
HA01 | HA02 | ||||||||
| . Joints with sealing bodies | . Others | |||||||||||
| F16L15/04;15/04@A | JA | JA00 SCREW-THREADED JOINTS FOR OIL PIPES (I.E., WITH ADDITIONAL SEALING) |
JA01 | JA02 | JA03 | JA04 | ||||||
| . Additional sealing placed on the interlocking surfaces of the screws | . Additional sealing placed on the ends of the screws | . Specific screw designs | . Others | |||||||||
| F16L15/04;15/04@B | JB | JB00 SCREW-THREADED JOINTS FOR COATED PIPES (I.E., WITH ADDITIONAL SEALING) |
JB01 | JB02 | JB03 | JB04 | JB05 | |||||
| . Additional sealing placed on the interlocking surfaces of the screws | . Additional sealing placed on the ends of the screws | . Corrosion prevention | . Specific screw designs | . Others | ||||||||
| F16L15/04;15/04@Z | JC | JC00 SCREW-THREADED JOINTS FOR PIPES OTHER THAN OIL PIPES AND COATED PIPES (I.E., WITH ADDITIONAL SEALING) |
JC01 | JC02 | JC03 | JC04 | JC05 | |||||
| . Specific screw designs | . Reinforced screw joints | . Tape sealing | . Sealing with means other than tape | . Others |