Patents
Sitemap › B21 - Mechanical metal-working without essentially removing material; Punching metal › B21B - Rolling of metal › B21B 19 - Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
Patents for B21B 19 - Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work (1,478)
11/2012
11/28/2012CN102794305A Method for preparing heat-resistance stainless steel seamless tube
11/27/2012US8316680 Method of making a seamless hollow body from steel
11/21/2012CN202545717U Support device of crankshaft in crankshaft slide block mechanism
11/14/2012CN102773303A Copper nickel alloy large-size thick-wall seamless pipe manufacturing process
11/14/2012CN102773258A Tension reducing process with large reducing ratio for small-caliber thick-wall seamless steel pipe and design method thereof
11/13/2012US8307688 Process for producing seamless stainless steel pipe
11/08/2012US20120279268 Forging of an Annular Article with Electric Induction Heating
11/07/2012CN202516842U Oil-water isolation device for planetary pipe mill
10/2012
10/31/2012CN102755993A Device and method for circulating jacking rod of puncher
10/24/2012CN202498078U Final rolling device for skew and longitudinal rolling of hollow steel
10/17/2012CN202490820U Hot-rolling reducing device of GCr15 bearing steel tube
10/17/2012CN102728617A Running device of mandril towline jiggers
10/17/2012CN102179681B Pipe mold manufacturing process adopting continuous-casting blank to forge and roll rough blank periodically
10/10/2012CN202479214U Cooling structure for rack of micro-tension-reducing mill
10/10/2012CN102716910A Steel tube for die-casting die and preparation method thereof
10/03/2012CN202461111U Roll of 2-roll cone mill
10/03/2012CN102703838A Production process for PSL-2 grade non-tempered N80 steel grade oil casing pipes
10/03/2012CN102699104A Preparation method of G20CrNiMo bearing steel pipe
10/03/2012CN102699103A Preparation method of 20CrMo steel pipe
10/03/2012CN102699102A Production process method of small-caliber cold-drawing seamless steel tube used for boiler
10/03/2012CN102699032A Process for machining seamless steel pipe with special drift diameter by using slight-stretch reducing mill
09/2012
09/26/2012CN202447375U Four-line multi-roll cold pipe mill
09/26/2012CN202447371U Full-action and multi-section type gapless hot rotary rolling mould
09/26/2012CN102688888A Rolling process of screw pump stator or rotor
09/26/2012CN102688887A Concrete pump pipe and method for producing metallurgy composite bimetallic concrete pump pipe by diagonal rolling technology
09/19/2012CN202438543U Punching and rolling equipment of high-alloy difficultly deformable seamless steel pipe
09/19/2012CN1608761B Method and equipment for rolling rolled piece in a rolling equipment with diagonal rolling machine
09/19/2012CN102671955A Sizing mill capable of adjusting roll gap manually
09/12/2012CN102658300A Structure of open hydraulic cylinder device of three-roller centering unit
09/12/2012CN102658296A Mill mandril thrust block with mandril automatically changeable online and automatic change method of mandril
09/05/2012CN202411095U Guide material receiving device of perforating machine
09/05/2012CN101448923B Lubricant composition for hot plastic working and method of hot plastic working with the same
08/2012
08/30/2012DE102008061141B4 Verfahren zur Herstellung nahtloser Rohre mittels eines Drei-Walzen-Stangenwalzwerks A process for the production of seamless tubes by a three-roll mill rod
08/29/2012CN102649211A Manufacturing method of stainless steel seamless steel tube
08/23/2012US20120210761 Plug, Piercing-Rolling Mill, and Method of Producing Seamless Tube by Using the Same
08/22/2012CN202387738U Feeding angle adjustment device for piercer roll
08/22/2012CN101844153B Metal bar material and pipe material precision hot helical rolling and blanking roller and blanking method thereof
08/15/2012CN102632078A Production method of J55 steel-grade oil casing capable of resisting impact load
08/08/2012EP2484458A1 Retract mandrel mill and method for rolling tubing
08/08/2012CN202366943U Adjustable three-roller sizing machine frame
08/08/2012CN102626714A Pre-deforming process for improving quality of hollow blank
08/01/2012EP1777313B1 Ni BASE ALLOY MATERIAL TUBE AND METHOD FOR PRODUCTION THEREOF
08/01/2012CN202356404U Ejection head centring device for perforating machine
07/2012
07/25/2012CN102172626B Hot rolling production method for super 13Cr oil pipes with diameter of 48 to 89 millimeters
07/25/2012CN101405095B Method and apparatus for piercing and rolling seamless pipe
07/18/2012CN202336473U 一种无缝钢管的改进型穿孔小车 One kind of seamless steel perforated improved car
07/18/2012CN102581016A Machining method for locally thickening steel pipe
07/18/2012CN102581015A Guide receiving device of perforating machine
07/18/2012CN102581014A Process for producing thin-wall seamless steel tubes
07/18/2012CN101653784B Ejector rob recycling replacing device of perforating machine
07/11/2012CN202316569U 一种穿孔机双钩翻钢装置 One kind of turned steel hook puncher unit
07/11/2012CN202316557U 一种穿孔机在线更换导板装置的锁紧机构 A puncher line replacement device locking mechanism guides
07/11/2012CN202316554U 一种穿孔机可调节行程升降辊 One kind of puncher adjustable stroke lifting roller
07/11/2012CN202316515U 穿孔机顶杆小车冷却水胶管的导向辊 Puncher ejector cooling water hose trolley guide rollers
07/11/2012CN202316513U 一种坯料端部的打中心装置 Centering device for the ends of the blank
07/11/2012CN102553947A Perforating machine capable of adjusting stroke of lifting roller
07/04/2012CN202290730U 一种用于穿孔机水冷顶头的顶头顶杆连接结构 Head ram connection structure for a puncher's water-cooled head
07/04/2012CN202290729U 一种无缝钛焊管 A seamless titanium pipe
07/04/2012CN202290728U 热轧管机的轧辊装置 Hot rolling pipe mill roll apparatus
07/04/2012CN202290727U Location system of three-roll holding device of perforating machine
07/04/2012CN102548677A Retract mandrel mill and method for rolling tubing
07/04/2012CN102527723A Four-wire multi-roll cold reducing mill
07/04/2012CN102527722A Perforating and rolling equipment and method of high-alloy and hard-deformation seamless steel tube
06/2012
06/28/2012WO2012086179A1 PRODUCTION METHOD FOR ROUND STEEL BAR FOR SEAMLESS PIPE COMPRISING HIGH Cr-Ni ALLOY, AND PRODUCTION METHOD FOR SEAMLESS PIPE USING ROUND STEEL BAR
06/28/2012WO2012086177A1 Process for manufacture of seamless steel pipe
06/27/2012CN102513381A Double-hook steel turnover device for perforating machine
06/27/2012CN102513361A Hot-rolled repairing method for waste and old oil pipes
06/27/2012CN102513360A Seamless steel tube hot rolling manufacture process
06/27/2012CN102513359A Seamless steel tube perforator piercing point on-line regulating device
06/27/2012CN102513358A Hydraulic control system of drum locking cylinder of hot rolled seamless steel tube perforator
06/27/2012CN102019293B Hydraulic control system for replacing top of perforation machine
06/27/2012CN101758073B Diagonal rolling double-roller puncher having cast-weld structure
06/27/2012CN101743074B Pusher device for piercing-rolling process and seamless pipe manufacturing method using same
06/20/2012CN202278005U 穿孔机上导板升降支架 Puncher on the elevator guide
06/20/2012CN102500619A Seamless titanium welded pipe and manufacturing method thereof
06/14/2012WO2012077334A1 Method for manufacturing seamless pipe
06/13/2012CN202270712U 一种穿孔脱管模具 One kind of perforated pipe mold removal
06/13/2012CN202270711U 一种校核连轧孔型的辅助装置 A method of verifying rolling pass auxiliary device
06/13/2012CN102489516A Process and equipment for hot rolling extra-small diameter seamless steel pipe with fixed mandrel
06/13/2012CN102489515A Manufacturing process method for seamless steel tube
06/13/2012CN102489514A Cold-formed sectional steel rolling machine for skew roller
06/13/2012CN101797585B Two-roller skew-rolling cold piercing and cold broaching machine for metal ingot
06/06/2012CN202263770U 无缝钢管热轧装置 Hot-rolled seamless steel pipe unit
06/06/2012CN101920263B Method for producing medium and small aperture seamless steel tube by reducing and rolling hollow continuous cast tube blank
05/2012
05/31/2012US20120131975 Method and forming machine for manufacturing a product having various diameters
05/30/2012CN202238890U Piercing plug of composite tube
05/30/2012CN202238888U Perforator rolling angle adjusting device
05/30/2012CN202238887U Centering machine
05/24/2012US20120125068 Method for producing seamless tubes by means of a three-roll bar rolling mill
05/23/2012CN102470418A 旋压辊压方法及装置 Method and apparatus for spinning roll
05/23/2012CN102463261A 一种穿孔顶头 One kind of piercing plug
05/23/2012CN102463255A 钢管穿孔机 Pipe puncher
05/23/2012CN101468360B Seamless oil well steel tube restraint tandem rolling processing equipment
05/16/2012CN102451840A Cold core setting machine
05/10/2012WO2012060358A1 Method of detecting defects in rotary piercing, seamless pipe manufacturing method
05/10/2012US20120110885 Method for producing a gun barrel, device for producing a gun barrel and a gun barrel
05/09/2012CN102441570A Small hydraulic bin of continuous tube mill
05/02/2012CN202207707U Hot rolling square tube sizing mill
05/01/2012US8166792 Method of making a seamless hot-finished steel pipe, and device for carrying out the method
04/2012
04/26/2012US20120097776 Shredding cutter and machining method thereof
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