| Patents for B21B 17 - Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling (1,014) |
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| 09/06/2000 | CN1265612A Method for producing welded Cu and Cu alloy pipes |
| 07/05/2000 | CN1259063A Method and device for detecting the actual state of a hot tube |
| 06/13/2000 | US6073331 Method for manufacturing seamless pipe |
| 06/07/2000 | CN1053127C Method and appts. for elongating metal tubes by means of mandrel mill |
| 05/24/2000 | EP1001856A1 METHOD FOR PRODUCING WELDED Cu AND Cu ALLOY PIPES |
| 05/23/2000 | US6065320 Caliber contour in a rolling mill roller for tubes |
| 05/18/2000 | DE19852537A1 Extrusion process for producing seamless hollow body with one closed end, involving forming closed end of hollow block when holing it, displacing material from edge towards center |
| 04/26/2000 | EP0854762B1 Calibre contour in a rolling mill roller for tubes |
| 04/20/2000 | DE19838673C1 Verfahren zur Herstellung hochfester und hochzäher Stahlprofilrohre und Anlage zu dessen Durchführung Process for the preparation of high-strength and high toughness steel tubes and profile system for its implementation |
| 04/19/2000 | CN1051482C Design method forpiercing head for rolling thin-wall hollow billet in two high mill |
| 04/11/2000 | US6047578 Multi-stand mandrel-free stretch reducing mill |
| 03/29/2000 | EP0988120A1 Method and device for detecting the actual state of a hot tube |
| 03/28/2000 | US6041635 Unit for rolling pipes on a mandrel |
| 03/09/2000 | WO2000012237A1 Method for minimizing thickened ends during the rolling of pipes in a stretch reducing mill |
| 02/23/2000 | EP0980914A2 Process and device for manufacturing very ductile profiled steel pipes |
| 02/15/2000 | US6024808 Seamless steel pipe manufacturing method and equipment |
| 02/09/2000 | EP0868231B1 A unit for rolling pipes on a mandrel |
| 12/28/1999 | US6006789 Method of preparing a steel pipe, an apparatus thereof and a steel pipe |
| 12/28/1999 | US6006575 Reversible mandrel bar assembly |
| 12/08/1999 | CN1047111C Pipe mill consisted of three roller mill stand |
| 11/30/1999 | US5992502 Method of producing metallic bar stock |
| 09/23/1999 | WO1999047284A1 A rolling stand, having three or more swinging and adjustable arms |
| 08/24/1999 | US5942132 Preheating |
| 08/24/1999 | CA2179862C Roll stand with separable roll parting adjustment module |
| 07/29/1999 | DE19840864C1 Method for reducing the length of thickened ends when rolling pipes in a stretch reduction rolling mill |
| 07/08/1999 | WO1999033588A1 Method and device for descaling pipes |
| 06/23/1999 | EP0924001A2 Mandrelless multiple stand stretch reducing rolling mill |
| 06/16/1999 | EP0921873A1 Rolling mill for sizing tubes or cylindrical bodies in general inthe iron and steel industry |
| 06/01/1999 | CA2035502C No-twist slit-rolling approach ("nta") apparatus and method for manufacturing steel reinforcing rod |
| 04/14/1999 | EP0809545B1 Roll pass design system for a pipe-reducing rolling mill |
| 03/31/1999 | CN1042702C Rolling stand |
| 03/30/1999 | US5887472 Tooling changeover for tube mills |
| 02/18/1999 | WO1999007491A1 METHOD FOR PRODUCING WELDED Cu AND Cu ALLOY PIPES |
| 02/03/1999 | EP0764063B1 Method of producing a seamless hot-finished tube |
| 02/03/1999 | CN1207061A Unit for rolling pipes on a mandrel |
| 12/17/1998 | DE19825388A1 Verfahren und Einrichtung zur Erfassung des IST-Zustandes eines heißen Rohres Method and apparatus for detecting the actual state of a hot tube |
| 12/10/1998 | WO1998055243A1 Method and device for detecting the actual state of a hot tube |
| 12/10/1998 | DE19734780C1 Method for producing welded copper and copper alloy pipes |
| 12/10/1998 | CA2293496A1 Method and device for detecting the actual state of a hot tube |
| 11/18/1998 | CN1199355A Calibre contour in rolling mill roller for tubes |
| 10/22/1998 | DE19732444C1 Prevention of back end losses of hot rolled pipes produced on Assel roll stands |
| 10/07/1998 | EP0868231A1 A unit for rolling pipes on a mandrel |
| 10/06/1998 | US5816092 Roll pass design for a pipe reducing rolling mill |
| 10/06/1998 | US5816087 Method for producing a seamless steel tubular product |
| 09/08/1998 | US5803164 Multiple finned tube and a method for its manufacture |
| 09/08/1998 | US5802903 Manufacturing method for angled steel pipes |
| 09/02/1998 | CN1039630C Rapid multistrand pipe mill |
| 07/29/1998 | EP0854762A2 Calibre contour in a rolling mill roller for tubes |
| 07/29/1998 | CN1189111A Seamless steel pipe manufacturing method and equipment |
| 07/14/1998 | US5778714 Method for manufacturing seamless pipe |
| 06/16/1998 | US5765423 Rolling unit for rolling rod-shaped or tubular bodies |
| 06/09/1998 | US5761807 Method of manufacture of a multiple finned tube |
| 05/20/1998 | EP0842715A1 Seamless steel pipe manufacturing method and equipment |
| 04/28/1998 | US5743126 Roll stand with separable roll parting adjustment module |
| 04/08/1998 | CN1037943C No-twist slit-rolling approach ( |
| 02/25/1998 | CN1174527A Roll pass design system for pipe-reducing rolling mill |
| 02/19/1998 | WO1998006515A1 Rolling mill for sizing tubes or cylindrical bodies in general in the iron and steel industry |
| 01/21/1998 | CN1170643A Producing method and preparing equipment for steel pipe |
| 01/15/1998 | WO1998001589A1 Process for producing weldless steel pipes |
| 12/17/1997 | EP0812633A1 Method of and apparatus for producing steel pipes |
| 12/03/1997 | EP0809545A1 Roll pass design system for a pipe-reducing rolling mill |
| 11/13/1997 | DE19628715C1 Seamless steel pipe production |
| 11/12/1997 | CN1164836A Steel pipe manufacturing method and apparatus and steel pipe |
| 11/11/1997 | US5685188 Universal mill stand for forming tubes |
| 11/06/1997 | DE19616791A1 Walzblock zum Walzen von Draht, Stäben, Rohren oder flachem metallischem Walzgut Rolling block for rolling wire, rods, tubes or flat metallic rolling stock |
| 11/04/1997 | US5682783 Ceramic tubemill roll assembly |
| 10/30/1997 | WO1997039843A1 Seamless steel pipe manufacturing method and equipment |
| 10/22/1997 | EP0801996A1 Method for producing a seamless steel tubular product |
| 08/21/1997 | DE19700486A1 Method for producing metal rod |
| 08/19/1997 | US5657659 Mandrel mill and method of tube rolling by using the same |
| 08/13/1997 | EP0788850A1 Steel pipe manufacturing method and apparatus and steel pipe manufactured thereby |
| 07/23/1997 | CN1154880A Mfg. method for square steel pipe and mfg. method for circular steel pipe |
| 07/17/1997 | WO1997013595A3 Calibre contour in a rolling mill roller for tubes |
| 07/08/1997 | US5644938 Method of and roll stand for diagonal rolling of tubes |
| 06/05/1997 | WO1997019767A1 A unit for rolling pipes on a mandrel |
| 05/28/1997 | CN1150767A Method of producing seamless hot-finished tube |
| 04/17/1997 | WO1997013595A2 Calibre contour in a rolling mill roller for tubes |
| 04/17/1997 | DE19539408A1 Kaliberkontur der Walze eines Rohrwalzwerkes Groove contour of the roll of a tube mill |
| 04/09/1997 | CN1146935A Rolling apparatus and technique for multi-start spirally grooved tube and axial grooved tube |
| 03/26/1997 | EP0764063A1 Method of producing a seamless hot-finished tube |
| 03/06/1997 | WO1997007906A1 Steel pipe manufacturing method and apparatus and steel pipe manufactured thereby |
| 03/04/1997 | US5607098 Tubular shape finishing apparatus for an electro-resistance-welded pipe |
| 01/22/1997 | CN1140638A Roll stand with separable roll parting adjustment module |
| 01/08/1997 | EP0752284A1 Roll stand with separable roll parting adjustment module |
| 12/17/1996 | US5584203 Rolling mandrel changing device for a plug mill |
| 12/11/1996 | CN1137426A Interchanging mandrel device for core rod tube rolling mills |
| 11/20/1996 | EP0743106A1 Method for manufacturing seamless pipe |
| 10/09/1996 | CN1132671A Rolling unit for rolling rod-shaped or tubular bodies |
| 08/27/1996 | US5548988 Multi-stand roll train |
| 08/22/1996 | WO1996025249A1 Roll pass design system for a pipe-reducing rolling mill |
| 08/21/1996 | CN1129154A Mandrel mill and method of tube rolling by using the same |
| 07/25/1996 | DE4446659C1 Working method for producing pipe in drawing roller |
| 07/11/1996 | WO1996020808A1 Tube and shell heat exchanger and method |
| 07/09/1996 | US5533370 Tube rolling method and apparatus |
| 07/03/1996 | EP0719601A1 Universal rolling stand for forming tubes |
| 07/03/1996 | EP0719600A1 A rolling unit for rolling rod-shaped or tubular bodies |
| 06/19/1996 | CN2229308Y Hot-rolling curved reinforced sheet iron |
| 06/11/1996 | US5524470 Plug mill bottom roll adjustment |
| 05/22/1996 | EP0593709B1 A rolling stand for generic rolling mills having three or more adjustable driven rolls |
| 05/07/1996 | US5513511 Method of producing seamless steel tube by using mandrel mill |