| Patents for B21B 21 - Pilgrim-step tube-rolling (473) |
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| 09/15/2004 | EP1457273A2 Method and device for producing a tube with an inner profile |
| 09/09/2004 | US20040173001 Drive system for a rolling mill |
| 07/28/2004 | CN1159471C Method for producing oxide dispersion enhanced Cr-contg. ferrie Fe-alloy pipe |
| 06/23/2004 | EP1429876A1 Drive system for a rolling mill |
| 06/23/2004 | CN1154549C Quick change pilger die and assembly of same with rollstand arbor |
| 06/02/2004 | CN1152386C Guide tube for nuclear reactor fuel assembly and manufacturing method thereof |
| 05/06/2004 | DE10248136B3 Making extended metal pipe filled with pressurized flowing mass, fills body before feeding into pilgering mill without internal tool |
| 04/14/2004 | CN1488451A Driving system of pilger cold-milling machine |
| 04/13/2004 | US6718811 Process for producing a guide tube of a nuclear reactor fuel assembly, mandrel for forming the guide tube, and the guide tube obtained |
| 03/11/2004 | US20040045334 Drive for cold pilger rolling stand |
| 03/10/2004 | EP1396292A1 Drive system for a cold pilger mill |
| 01/08/2004 | DE10241612B3 Antriebssystem für ein Kaltpilgerwalzwerk Drive system for a cold pilger rolling mill |
| 11/12/2003 | EP1361003A2 Method for manufacuturing seamless steel tube |
| 10/23/2003 | US20030196734 Method for manufacturing seamless steel tube |
| 09/03/2003 | EP1339890A1 Cylindrical tube for industrial chemical installations |
| 08/13/2003 | CN2565556Y Multi roller rolling mill |
| 05/14/2003 | CN1108395C Steel product, its use, cold-working tool and method for producing the steel product |
| 04/24/2003 | DE10144887C1 Verfahren zum Betreiben eines Kaltpilgerwalzwerks und Kaltpilgerwalzwerk Method for operating a cold rolling mill and cold pilgrim pilgrim rolling mill |
| 04/10/2003 | WO2003028913A1 Drive system for a rolling mill |
| 03/19/2003 | EP1293268A1 Method for operating a cold pilger rolling mill and cold pilger rolling mill |
| 12/25/2002 | CN1386884A Method for producing oxide dispersion enhanced Cr-contg. ferrie Fe-alloy pipe |
| 11/21/2002 | DE10122595A1 Querwalzmaschine Cross rolling machine |
| 11/21/2002 | DE10122594A1 Querwalzmaschine Cross rolling machine |
| 11/13/2002 | EP1256399A1 Cross rolling mill |
| 11/13/2002 | EP1256398A1 Cross rolling mill |
| 11/07/2002 | DE19709132C2 Verfahren zum Kaltwalzen von Rohren oder Stangen im Kaltpilger- oder Kaltpilgerschrittverfahren A method for cold rolling of tubes or rods in Kaltpilger- or cold back-step method |
| 10/09/2002 | EP1094907B1 Quick change pilger die and assembly of same with rollstand arbor |
| 09/05/2002 | US20020121119 Rotary drive of reciprocating roll passes of a cold pilger rolling mill |
| 07/25/2002 | US20020096318 Cylindrical tube for industrial chemical installations |
| 07/04/2002 | WO2002042510A8 Cylindrical tube for industrial chemical installations |
| 06/25/2002 | US6411668 Guide tube of a nuclear reactor fuel assembly |
| 06/05/2002 | CN1351909A Rotary driving device for roller hole type Pilger cold mill capable of alternatively rolling |
| 05/30/2002 | WO2002042510A1 Cylindrical tube for industrial chemical installations |
| 05/30/2002 | CA2426882A1 Cylindrical tube for industrial chemical installations |
| 05/08/2002 | EP1203622A2 Rotary drive for reciprocal roll-off roll grooves of a cold pilger mill |
| 05/08/2002 | DE10054268A1 Drehantrieb von reziprok abwälzbaren Walzenkalibern eines Kaltpilgerwalzwerkes Rotary drive of reciprocal reinvoiceable roll grooves of a cold rocker mill |
| 05/08/2002 | CN1348507A Steel cold work tool, its use and manufacturing |
| 04/10/2002 | EP1194604A1 Steel cold work tool, its use and manufacturing |
| 03/26/2002 | US6360575 Calibration of an instrument for the cold-rolling of tubes |
| 01/10/2002 | US20020003849 Process for producing a guide tube of a nuclear reactor fuel assembly, mandrel for forming the guide tube, and the guide tube obtained |
| 12/13/2001 | DE10127165A1 Roll stand used for a pilger mill consists of a column in upper and lower compression pieces on layers of horizontal rollers and adjusting screws |
| 09/26/2001 | CN1314830A Quick change pilger die and assembly of same with rollstand arbor |
| 07/10/2001 | US6257040 Method for controlling a hydraulic rotary and feed drive for a cold pilger rolling mill |
| 06/26/2001 | US6250125 Method for producing iron-base dispersion-strengthened alloy tube |
| 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 |
| 06/13/2001 | CN2434075Y Appts of carrying out small pilger head for rolling |
| 05/02/2001 | EP1094907A1 Quick change pilger die and assembly of same with rollstand arbor |
| 04/18/2001 | CN1291923A Design method for tool for cold-rolling of tubes |
| 03/27/2001 | US6205833 Cold pilger rolling tool for producing internally ribbed tubes |
| 03/07/2001 | EP1080799A1 Calibration of an instrument for the cold-rolling of tubes |
| 11/09/2000 | WO2000066801A1 Steel cold work tool, its use and manufacturing |
| 11/09/2000 | CA2369298A1 Steel cold work tool, its use and manufacturing |
| 09/13/2000 | EP1034853A2 Cold pilger rolling tool for the manufacture of internally ribbed pipes |
| 09/13/2000 | EP1034852A2 Drive for a rolling stand reciprocable in the rolling direction |
| 09/07/2000 | DE19911431A1 Antrieb für ein in Walzrichtung hin- und herbewegbares Walzgerüst Drive for a back and forth movably in the direction of rolling mill |
| 07/12/2000 | CN2386900Y Feeding swinger of cold pipe mill |
| 07/06/2000 | WO2000038852A1 Calibration of an instrument for the cold-rolling of tubes |
| 06/29/2000 | DE19860710A1 Verfahren zum Regeln eines hydraulischen Dreh- und Vorschubantriebes für ein Kaltpilgerwalzwerk A method for controlling a hydraulic rotating and feeding drive for a cold pilger rolling mill |
| 06/28/2000 | EP1013353A2 Method for controlling a hydraulic rotating and feeding device for a cold pilger mill |
| 05/31/2000 | CN1052926C Mill housing cold rolling pipe mill with reciprocating motion |
| 05/04/2000 | DE19911677C1 Cold forming tool is used to produce internally ribbed pipe by the cold pilger step by step process |
| 04/25/2000 | CA2019955C Single peak radial texture zircaloy tubing |
| 02/16/2000 | EP0979688A1 Method of manufacturing copper tubes |
| 02/03/2000 | DE19835077A1 Production of long forgings out of cast blocks or continuously cast billets involves use of a pilger step rolling process for hot shaping of such blocks or billets |
| 01/13/2000 | WO2000001498A1 Quick change pilger die and assembly of same with rollstand arbor |
| 01/11/2000 | US6012313 Process for producing seamless tubes in cold rolling mills and for the formation and electronic regulation of external thrust |
| 12/23/1999 | DE19804162A1 Cold-rolling pipes or bars by the Pilger process |
| 08/31/1999 | US5946365 Process for producing a guide tube of a nuclear reactor fuel assembly |
| 07/13/1999 | US5921128 Method and apparatus for cold rolling tubes |
| 06/29/1999 | US5916320 Method for manufacturing tubes using the cold pilger rolling method |
| 05/25/1999 | US5906130 Quick change pilger die and assembly of same with rollstand arbor |
| 04/14/1999 | EP0908245A1 Method and apparatus for producing tubes by cold pilgrim rolling |
| 04/08/1999 | DE19709132A1 Cold rolling of pipes and bars with the cold pilger or cold pilger step process |
| 12/09/1998 | CN1041063C Apparatus for detecting Pilger cold rolled tube core rod |
| 11/11/1998 | CN1198575A Process for producing guide tube of nuclear reactor fuel assembly, mandrel for forming the guide tube, and guide tube obtained |
| 10/22/1998 | DE19750787C1 Pipe production by cold Pilger process |
| 09/02/1998 | CN1039630C Rapid multistrand pipe mill |
| 08/19/1998 | EP0859369A1 Method for the manufacture of a thimble for a nuclear reactor fuel assembly, forming mandrel for such a thimble and thimble obtained by this method |
| 07/14/1998 | US5778718 Process for rolling tubes |
| 06/24/1998 | EP0849010A1 Method and device for cold rolling tubes and bars |
| 11/27/1997 | DE19620161A1 Pipe rolling method |
| 09/24/1997 | EP0796674A2 Method of producing tubes from extruded, continuously cast or cross-rolled loops in a cold pilger mill |
| 06/03/1997 | US5634365 Process allowing background noise to be reduced during eddy-current testing of metal tubes, and tubes produced using this process |
| 05/06/1997 | US5626050 Method of making metal ball bats |
| 04/03/1997 | DE19527795A1 Cold-rolling pipe mill |
| 03/04/1997 | US5606885 Device for the guiding away cold-rolled tubes behind a cold pilger rolling mill |
| 02/27/1997 | DE19609291A1 Rolling pipes or bars with improved efficiency |
| 10/08/1996 | US5563808 Pilger mill mandrel measuring device |
| 08/27/1996 | US5548987 Roll mandrel monitoring arrangement in cold pilger mills |
| 07/30/1996 | US5540076 Crank mechanism for a cold pilger rolling mill |
| 05/01/1996 | CN1121445A Series distribution circular holes cyclic type pipe cold-rolling machine |
| 04/24/1996 | EP0707901A1 Crank drive for a cold pilger mill |
| 02/29/1996 | DE4431391A1 Appts. for rolling pipes by the Pilger process with improved bearing life |
| 01/04/1996 | DE4423683A1 Mfg. of hot rolled seamless steel tubes avoiding formation of rolled-in laps |
| 09/27/1995 | CN1108974A Cold pilger mill for rolling long tube block |
| 09/27/1995 | CN1108973A Apparatus for output of tubes rolled by cold rolling machine |
| 09/19/1995 | US5450741 Roll tool for cold pilger rolling of pipes |
| 09/13/1995 | CN1108157A Apparatus for detecting Pilger cold rolled tube |
| 07/12/1995 | CN1104940A Crankshaft gear in cold tube roller |
| 07/05/1995 | EP0661113A1 Cold pilger mill for rolling long tubular stock |