| 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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| 08/17/2010 | US7775079 Rolling method and rolling apparatus for flat-rolled metal materials |
| 07/21/2010 | CN101428298B Process for manufacturing pipeline tube |
| 07/01/2010 | WO2010073863A1 Process for production of seamless metal pipe by cold rolling |
| 07/01/2010 | CA2743165A1 Method for producing seamless metallic tube by cold rolling |
| 06/17/2010 | WO2010066230A2 Method for producing seamless tubes by means of a three-roll bar rolling mill |
| 06/17/2010 | CA2745586A1 Method for producing seamless tubes by means of a three-roll bar rolling mill |
| 06/16/2010 | CN101743074A Pusher device for piercing-rolling process and seamless pipe manufacturing method using same |
| 06/09/2010 | CN101722190A Process for treating hot-rolled capillary pipe |
| 06/09/2010 | CN101394943B Process for producing high-Cr seamless pipe |
| 06/02/2010 | CN101405096B Method for manufacturing seamless pipe |
| 06/01/2010 | CA2592798C Internal roller tool for bending a strip into a tube |
| 05/25/2010 | CA2541326C Martensitic stainless steel tube and manufacturing method thereof |
| 05/06/2010 | US20100107713 Method and device for rolling a rolling stock in a rolling mill with a cross-rolling mill |
| 04/15/2010 | US20100092331 Weather-resistant hot-rolled steel sheet superior high-strength, and manufacturing method |
| 04/09/2010 | CA2640858A1 Utility pole |
| 04/01/2010 | US20100077819 Method of machining an end portion of a long tubular member |
| 03/31/2010 | EP2168696A1 Pusher device for piercing-rolling process and seamless pipe manufacturing method using same |
| 03/31/2010 | CN201431993Y Device for forming spiral flat pipe and round pipe |
| 03/11/2010 | US20100058824 Monitoring apparatus and monitoring method of seamless pipe or tube production conditions and manufacturing facilities of seamless pipe or tube |
| 03/10/2010 | CN101665889A Martensitic stainless steel pipe and method for production thereof |
| 02/24/2010 | CN101657275A Method and device for rolling a product to be rolled in a rolling mill having a cross-rolling mill |
| 02/23/2010 | CA2633376C Process for manufacturing a seamless tube |
| 02/17/2010 | CN101652197A Cold-finished seamless steel pipe for integrally molded drive shaft, drive shaft using the pipe, and method for manufacturing the cold-finished seamless steel pipe |
| 02/11/2010 | US20100035079 High-strength cold-rolled steel sheet and method for manufacturing the same |
| 01/28/2010 | US20100018281 Method of manufacturing plug used to pierce and roll metal material, method of manufacturing metal pipe and plug used to pierce and roll metal material |
| 01/14/2010 | US20100005848 Method for producing duplex stainless steel pipe, method for straightening, method for regulating strength, and method for operating straightener |
| 01/13/2010 | CN100580296C Thin wall non-corrodible steel sharp corner square, rectangular pipe and its production facility |
| 01/06/2010 | EP2140950A1 Cold-finished seamless steel pipe for integrally molded drive shaft, drive shaft using the pipe, and method for manufacturing the cold-finished seamless steel pipe |
| 12/30/2009 | CN100574909C Method for manufacturing seamless pipes or tubes |
| 12/29/2009 | US7637011 Method for producing a structured metal sheet for exhaust-gas treatment devices and apparatus for producing the structured metal sheet |
| 12/23/2009 | CN101610854A Device and method for monitoring manufacturing status of seamless pipe and seamless pipe manufacturing facility |
| 11/25/2009 | EP2121208A1 Method and device for rolling a product to be rolled in a rolling mill having a cross-rolling mill |
| 11/18/2009 | CN100560768C Martensitic stainless steel pipe and method for production thereof |
| 10/28/2009 | EP2111932A1 Method for manufacturing seamless pipes or tubes |
| 10/28/2009 | CN101568658A High-strength highly heat-conductive copper alloy pipe and process for producing the same |
| 10/08/2009 | WO2009122620A1 Method of producing seamless metal tube and punch for use therein |
| 10/07/2009 | CN101553327A Manufacturing method for seamless pipe |
| 10/01/2009 | WO2009118939A1 Method for manufacturing seamless pipes and method for determining length of billet for manufacturing seamless pipes |
| 09/24/2009 | US20090238734 Susceptor with roll-formed surface and method for making same |
| 09/23/2009 | CN101538623A Process for manufacturing T/P91.92 fine-grained heat-resistant steel pipe |
| 09/09/2009 | EP2098310A1 Manufacturing method for seamless pipe |
| 08/18/2009 | CA2497595C High-ductility, high-strength steel product and process for production thereof |
| 08/05/2009 | CN100524580C Secondary electron emission material palladium-barium alloy and preparation method thereof |
| 08/05/2009 | CN100522405C Method for producing seamless pipe |
| 07/28/2009 | CA2524754C Tubes of zirconium-based alloys and their manufacturing method |
| 07/22/2009 | EP2080569A1 Device and method for monitoring manufacturing status of seamless pipe and seamless pipe manufacturing facility |
| 07/22/2009 | EP2006396A9 Process for production of seamless pipes |
| 07/22/2009 | CN201275544Y Disk-shaped roll |
| 07/02/2009 | WO2009081664A1 High-strength highly heat-conductive copper alloy pipe and process for producing the same |
| 07/01/2009 | CN101468360A Seamless oil well steel tube restraint tandem rolling processing method and special-purpose equipment |
| 06/24/2009 | CN201261025Y Special-purpose equipment for seamless oil well steel tube restraint tandem rolling processing |
| 06/10/2009 | EP2067542A1 Method and rolling mill to produce wireless steel pipes |
| 06/03/2009 | CN101444793A Method for fabricating seamless steel pipes for large-diameter high-pressure gas cylinders used in trailer production |
| 06/03/2009 | CN101444792A Method for producing seamless steel pipes used for large-diameter high-pressure gas cylinders |
| 06/03/2009 | CN100493746C Thermal processing method of Cr-containing steel |
| 05/27/2009 | CN101439350A Method for producing seamless steel pipe for producing gas cylinder with heavy caliber for hauled vehicle |
| 05/26/2009 | CA2388398C Welded steel pipe having excellent hydroformability and method for making the same |
| 05/20/2009 | CN100489263C Technology for manufacturing collar thick-wall seamless steel pipe |
| 05/13/2009 | CN101428298A Process for manufacturing pipeline tube |
| 05/06/2009 | EP2003215A9 Method for production of martensitic stainless steel pipe |
| 05/06/2009 | CN101426594A Process for producing stainless-steel pipe |
| 04/29/2009 | EP2052795A1 Method for producing seamless pipe |
| 04/23/2009 | US20090100890 Rolling Stand, Rolling Train, And Method For Rolling Metal Strip |
| 04/22/2009 | EP2002903A9 Method for production of seamless pipe, and oxidizing gas supply apparatus |
| 04/15/2009 | CN101410537A Process for producing seamless two-phase stainless-steel pipe |
| 04/15/2009 | CN101410536A Method of manufacturing seamless pipe and tube |
| 04/15/2009 | CN101410535A Method for production of martensitic stainless steel pipe |
| 04/15/2009 | CN101410196A Process for manufacturing a seamless tube |
| 04/15/2009 | CN101410194A Cold finish seamless steel pipe for drive shaft and method for producing the same |
| 04/08/2009 | CN101405096A Method for manufacturing seamless pipe |
| 03/25/2009 | CN101394943A Process for producing high-Cr seamless pipe |
| 03/18/2009 | EP2036626A1 Perforation device |
| 03/18/2009 | CN101386037A Treatment technique of 1010 steel for bearing ring |
| 03/12/2009 | WO2009030105A1 Manufacturing technique of seamless steel pipe |
| 02/25/2009 | EP2027947A1 Method for the production of alloy pipes for heat exchangers using precipitation hardening through underwater extrusion |
| 02/25/2009 | CN100463993C Low carbon equivalent micro-alloy steel pipe and on-line normalizing process thereof |
| 02/18/2009 | EP2025421A1 Process for producing seamless stainless-steel pipe |
| 02/18/2009 | EP1814679B1 Method for production of a seamless hot-finished steel tube |
| 02/05/2009 | US20090033007 Martensitic stainless steel tube and manufacturing method thereof |
| 02/03/2009 | US7485197 Method for manufacturing martensitic stainless steel tube |
| 02/03/2009 | CA2519815C Method of manufacturing seamless tube |
| 01/22/2009 | WO2009011146A1 Pusher device for piercing-rolling process and seamless pipe manufacturing method using same |
| 01/15/2009 | US20090013750 Application method of cr-plated mandrel bar for hot rolling |
| 01/14/2009 | EP2014378A1 Process for producing stainless-steel pipe |
| 01/06/2009 | US7472573 Tooling assembly |
| 12/31/2008 | EP2008732A1 Cold finish seamless steel pipe for drive shaft and method for producing the same |
| 12/31/2008 | CN101334120A Thin wall non-corrodible steel sharp corner square, rectangular pipe and its production facility |
| 12/24/2008 | EP2006396A2 Process for production of seamless pipes |
| 12/24/2008 | CN101327492A Process and system for manufacturing hot-rolled seamless tube |
| 12/23/2008 | CA2388480C Welded steel pipe having excellent hydroformability and method for making the same |
| 12/18/2008 | US20080311422 Heavy Duty Composite Part |
| 12/17/2008 | EP2003216A1 Process for producing seamless two-phase stainless-steel pipe |
| 12/17/2008 | EP2003215A2 Method for production of martensitic stainless steel pipe |
| 12/17/2008 | EP2002904A1 Method of manufacturing seamless pipe |
| 12/11/2008 | US20080302158 Method and Rolling Mill For Improving the Running-Out of a Rolled Metal Strip Whose Trailing End is Moving at Rolling Speed |
| 11/26/2008 | EP1757376B1 Process for producing seamless steel pipe |
| 11/12/2008 | EP1990107A1 PROCESS FOR PRODUCING HIGH-Cr SEAMLESS PIPE |
| 10/16/2008 | WO2008123363A1 Cold-finished seamless steel pipe for integrally molded drive shaft, drive shaft using the pipe, and method for manufacturing the cold-finished seamless steel pipe |
| 10/01/2008 | CN100422576C High-strength connecting rod and method of producing same |
| 09/25/2008 | WO2008113588A1 Method and device for rolling a product to be rolled in a rolling mill having a cross-rolling mill |