| Patents for B21B 23 - Tube-rolling not restricted to methods provided for in only one of groups , e.g. combined processes (649) |
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| 10/27/2005 | US20050236076 High integrity sputtering target material and method for producing bulk quantities of same |
| 10/26/2005 | CN1224471C Section-variable tube of single rotator and its manufacture method and equipment |
| 10/05/2005 | CN1221336C Method of manufacturing copper and copper alloy pipes using planetary tube mill |
| 08/31/2005 | CN2721263Y Apparatus for machining stainless steel coated irregular tubes |
| 08/17/2005 | CN1214882C Process for production of industrial tubes or section bars from metal and related apparatus |
| 07/28/2005 | WO2005068098A1 Method for producing seamless pipe |
| 07/14/2005 | WO2005064037A2 High integrity sputtering target material and method for producing bulk quantities of same |
| 07/06/2005 | CN1635300A Stainless steel clad non-circular pipe and processing method and processing equipment therefor |
| 06/29/2005 | CN1208143C Method for manufacturing high-quality seamless steel pipe |
| 06/01/2005 | EP1463591B1 Method and rolling stand for producing rods, bar stock or seamless tubes |
| 06/01/2005 | CN1203933C Warm machining method for making stainless steel pipe |
| 05/25/2005 | CN1618540A Method for making soldered hot-rolled composite metal tube |
| 05/19/2005 | DE10349056A1 Process for rolling rolling stock e.g. metal rods in a rolling mill comprises measuring the rotation of the rolling stock about its longitudinal direction, and controlling a drive parameter of a planetary cross rolling mill |
| 04/27/2005 | CN1608761A Method and equipment for rolling rolled piece in a rolling equipment with diagonal rolling machine |
| 04/21/2005 | WO2005035815A1 Martensitic stainless steel pipe and method for production thereof |
| 03/23/2005 | CN1193835C Warm machining method for making carbon steel pipe and alloy steel pipe |
| 03/16/2005 | CN1594953A Method for making ferrite stainless steel seamless pipes and cold working process thereof |
| 03/10/2005 | WO2005021182A1 Hollow bar manufacturing process |
| 02/23/2005 | CN1583306A Producing method for precision superlong copper alloy pipe |
| 02/16/2005 | CN1189257C Method for making efficient heat conducting tube |
| 02/09/2005 | CN2677048Y Seamless metal pipe continuous casting continuous rolling equipment |
| 01/26/2005 | CN1186141C Manufacturing method of square steel tube |
| 01/25/2005 | US6846371 Method for making high-strength high-toughness martensitic stainless steel seamless pipe |
| 01/19/2005 | EP1498193A1 Method and device for fabricating seamless tubes |
| 12/28/2004 | US6834523 Method for producing seamless tube with grooved inner surface |
| 12/01/2004 | CN2659570Y Rolling revolving sleeve stock guider of cold tube mill |
| 12/01/2004 | CN1177656C Manufacturing method of square steel tube |
| 11/10/2004 | CN1544168A Hollow drill steel rolling process |
| 10/27/2004 | CN1172758C Warm machining method for making titanium or Ti-alloy pipe |
| 10/27/2004 | CN1172757C Inner wall quality controlling method for fine seamless alloy tube |
| 10/06/2004 | EP1463591A1 Method and rolling stand for producing rods, bar stock or seamless tubes |
| 09/29/2004 | CN1532007A New process for producing high alloy deformed seamless pipe |
| 09/23/2004 | DE10333507B3 Process to manufacture a seamless steel pipe by punching hot metal block with a mandrel followed by passage through inclined nip mill |
| 09/15/2004 | CN1166465C Warm machining method for making copper or cu alloy pipe |
| 09/09/2004 | DE10261632B4 Verfahren und Walzanlage zum Herstellen von Draht, Stäben oder nahtlosen Rohren A method and rolling mill for producing wire rods or seamless tubes |
| 08/26/2004 | WO2004071686A1 Seamless steel tube for drive shaft and method of manufacturing the same |
| 08/11/2004 | CN1161199C Technology for manufacturing seamless Al-alloy pipe |
| 06/09/2004 | CN1502425A Method for mfg of high-quality seamless steel pipe |
| 05/04/2004 | US6729381 Process for the production of industrial tubes or section bars from metal and related apparatus |
| 04/29/2004 | DE10346752A1 Pipe rolling control, especially for heat-treated seamless pipes, has a technology system coupled to a computer to give a self-correction action at the rolling stands |
| 03/17/2004 | CN1142040C Method for making high-bond composite bimetal pipe |
| 02/26/2004 | US20040035176 Method for manufacturing an aluminum tube |
| 02/18/2004 | CN1475316A Method of manufacturing copper and copper alloy pipes using planetary tube mill |
| 01/14/2004 | EP1046435B1 Piercing mill and method of changing cannon |
| 11/19/2003 | EP1362648A1 Method of making an aluminum tube |
| 11/13/2003 | DE10221515C1 Aluminium tube manufacturing method using dressing rollers for texturing outer surface of aluminium tube |
| 11/12/2003 | EP1361003A2 Method for manufacuturing seamless steel tube |
| 11/12/2003 | CN1127383C Seamless steel pipe manufacturing method and equipment |
| 10/23/2003 | US20030196734 Method for manufacturing seamless steel tube |
| 10/15/2003 | CN1448230A Apparatus for producing internally grooved tube |
| 10/15/2003 | CN1448228A Apparatus for producing internally grooved tube |
| 10/09/2003 | DE19935647C2 Verfahren zum Walzen von erwärmtem metallischem Gut und Anlage zur Durchführung des Verfahrens A method of rolling heated metallic materials and plant for carrying out the method |
| 10/02/2003 | US20030182980 Apparatus for producing internally grooved tube |
| 10/02/2003 | US20030182979 Method for producing seamless tube with groved inner surface |
| 08/27/2003 | CN2568326Y Moulding appts. for spiral flat tube |
| 07/17/2003 | WO2003057383A1 Method and rolling stand for producing rods, bar stock or seamless tubes |
| 07/09/2003 | CN1429279A Martensitic stainless steel and seamless steel pipes produced with it |
| 06/11/2003 | CN1111101C Non skin-pass process for medium carbon, micro-alloy, seamless steel tube |
| 06/03/2003 | US6571593 Continuous shear deformation device |
| 04/23/2003 | CN1411921A Hot-rolling perforation-cold-rolling forming method for hollow rock-drill steel |
| 04/16/2003 | CN2544850Y Rolling mechanism of two-rolls tube cold rolling mill |
| 04/10/2003 | US20030066580 Finishing rolling; controlling temperature, crystal structure; corrosion resistance |
| 04/02/2003 | CN1407919A Process for production of industrial tubes or section bars from metal and related apparatus |
| 03/05/2003 | EP1288316A1 Method for making high-strength high-toughness martensitic stainless steel seamless pipe |
| 02/26/2003 | EP1285097A1 Martensitic stainless steel and seamless steel pipes produced with it |
| 02/19/2003 | CN1397391A Method for making efficient heat conducting tube |
| 02/13/2003 | US20030029598 Process for the production of industrial tubes or section bars from metal and related apparatus |
| 01/29/2003 | CN1393297A Technology for manufacturing seamless Al-alloy pipe |
| 01/15/2003 | CN1391022A Ultrahigh-strength sleeved petroleum pipe with special jointer for resisting squeeze and its making method |
| 01/15/2003 | CN1391021A Sleeved petroleum pipe resisting CO2 corrosion and its making method |
| 01/15/2003 | CN1391020A Medium-strength sleeved petroleum pipe for hot recovery well of thick oil and its making method |
| 01/15/2003 | CN1390678A Warm machining method for making titanium or Ti-alloy pipe |
| 01/15/2003 | CN1390677A Warm machining method for making copper or cu alloy pipe |
| 01/15/2003 | CN1390656A Warm machining method for making stainless steel pipe |
| 01/15/2003 | CN1390655A Warm machining method for macking carbon steel pipe or alloy steel pipe |
| 11/27/2002 | EP1259342A1 Process for the production of industrial tubes or section bars from metal and related apparatus |
| 11/13/2002 | CN1378887A Technology and apparatus for making hollow circular workpiece with square billet |
| 10/08/2002 | US6460389 Method and apparatus for rolling of heated metallic products |
| 09/11/2002 | CN1368410A Technology for making composite metal pipe with internal and external attached layers or internal liner layer |
| 07/31/2002 | CN1360979A Inner wall quality controlling method for fine seamless alloy tube |
| 04/10/2002 | CN1343536A Section-variable tube of single rotator and its manufacture method and equipment |
| 04/03/2002 | CN1342529A Technology and apparatus for thermal tandem rolling of large- or middle-diameter high-accuracy tube with straight welded seam |
| 02/14/2002 | US20020019321 Metalworking lubrication |
| 01/30/2002 | EP0842715B1 Seamless steel pipe manufacturing method and equipment |
| 01/23/2002 | EP0787541B1 Method of manufacturing seamless steel pipes and manufacturing equipment therefor |
| 11/22/2001 | WO2001088210A1 Martensitic stainless steel and seamless steel pipes produced with it |
| 11/22/2001 | CA2409158A1 Martensitic stainless steel and seamless steel pipes produced with it |
| 11/14/2001 | EP0828007B1 Process for producing high-strength seamless steel pipe having excellent sulfide stress cracking resistance |
| 11/07/2001 | CN1320493A Method for making high-bond composite bimetal pipe |
| 09/07/2001 | WO2001064372A1 Process for the production of industrial tubes or section bars from metal and related apparatus |
| 06/21/2001 | DE10020131C1 Fabrication method for hot-finished seamless tube of high-temperature steel ingot is heated and punched into hollow block to dimensions close to hot rolling in pilger mill |
| 05/23/2001 | CN1066075C Method for making square section steel pipe |
| 04/18/2001 | CN1291533A Manufacturing method of square steel tube and round steel tube |
| 04/18/2001 | CN1291532A Manufacturing method of square steel tube and round steet tube |
| 04/11/2001 | CN1064276C Method for producing seamless steel pipes and manufacturing equipment thereof |
| 03/21/2001 | CN1063360C Integrative rolling technology for large pressure steel pipe |
| 03/07/2001 | CN2422073Y Rolling pipe expander |
| 03/07/2001 | CN1062785C Method for producing seamless hot-finished tube |
| 02/08/2001 | DE19935647A1 Hot rolling of wire, rod or seamless tube is carried out in mill using as many of the same units as possible lines |
| 01/17/2001 | CN2414855Y Stepless adjustable bore three-roller male thread steel pipe mill |