| Patents for B21C 37 - Manufacture of metal sheets, rods, wire, tubes, profilesor like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape (9,784) |
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| 04/13/2011 | CN102009080A Forming wheel box of host head box assembly of spiral air duct forming machine |
| 04/13/2011 | CN102009079A Helical air duct forming machine with main machine capable of synchronously cutting without halt |
| 04/13/2011 | CN102009078A Technological process for producing brass pipe through upwards continuous casting, continuous rolling and drawing |
| 04/13/2011 | CN101448967B High-strength steel pipe with excellent unsusceptibility to strain aging for line piping, high-strength steel plate for line piping, and processes for producing these |
| 04/13/2011 | CN101175583B Cylindorical rod and method for manufacturing the same |
| 04/12/2011 | US7923390 Electrical shielding material composed of metalized stainless steel monofilament yarn |
| 04/12/2011 | US7921688 Square tube forming roll, square tube forming method, and forming device |
| 04/12/2011 | US7921529 Method of smoothing a container |
| 04/06/2011 | EP2303486A1 Manufacturing apparatus and method of spiral duct including elbow |
| 04/06/2011 | EP2303484A1 Seat frame - tailored tubes |
| 04/06/2011 | EP1838473B1 Method and device for producing peripheral segments |
| 04/06/2011 | CN201783529U Bidirectional driving device for welded pipe production |
| 04/06/2011 | CN201783528U Full-automatic metal hose machine |
| 04/06/2011 | CN102003577A Method for producing spiral reinforcing rib composite pipe |
| 04/06/2011 | CN102002628A Method for manufacturing low-carbon steel sheets |
| 04/06/2011 | CN102002615A Ultrahigh-strength aluminum alloy material and preparation method of pipe blank for preparing internal cylinder of separator |
| 04/06/2011 | CN102000943A Powder-filling extrusion processing technique for special three-way pipe for air conditioning |
| 04/06/2011 | CN102000716A Production line of major diameter straight welded pipe |
| 04/06/2011 | CN102000715A Molding ring for production of large-caliber thick-wall seamless steel pipe and surfacing compound manufacturing method thereof |
| 04/06/2011 | CN102000708A Steel pipe drawing apparatus and drawn steel pipe manufacturing method |
| 04/06/2011 | CN101733637B Aluminum strip forming machine |
| 04/06/2011 | CN101163807B High tension steel plate, welded steel pipe and method for production thereof |
| 04/01/2011 | CA2715910A1 Dual purpose dimple for hvac circular ductwork |
| 03/31/2011 | WO2011036908A1 Steel pipe-concrete composite pile, process for production of the pile, and steel pipe for use in steel pile-concrete composite pile |
| 03/31/2011 | US20110073219 Method for improving residual stress in pipe and apparatus |
| 03/30/2011 | CN201776306U Tube coiling machine |
| 03/30/2011 | CN101992233A Uncoiler for spiral duct molding machine |
| 03/30/2011 | CN101992231A Air pipe hydraulic elbow forming machine with good forming quality |
| 03/30/2011 | CN101992230A Method for manufacturing profiled steel pipe |
| 03/30/2011 | CN101992229A Flanging mechanism of air duct hydraulic elbow forming machine |
| 03/30/2011 | CN101992228A Discharging platform for spiral duct molding machine |
| 03/30/2011 | CN101992227A Head case assembly for spiral duct forming host machine |
| 03/30/2011 | CN101992226A Compact spiral air duct forming machine |
| 03/30/2011 | CN101992225A Stainless steel wire drawing production process using polishing for replacing acid washing |
| 03/30/2011 | CN101992224A Production process of clad steel wire rod with steel core wire of dual phase structure |
| 03/30/2011 | CN101223021B Apparatus and method for forming annular grooves on the outer surface of a cable or tube |
| 03/24/2011 | WO2011034119A1 Welding device for manufacturing electric resistance welded tube |
| 03/24/2011 | WO2011034087A1 Welding device for manufacturing electric resistance welded tube |
| 03/24/2011 | US20110067469 T-fitting manufacturing method and tool |
| 03/23/2011 | EP2297537A1 Heat exchanger, in particular heat exchanger of a motor vehicle, and method for producing a cooling pipe of a heat exchanger |
| 03/23/2011 | CN201768832U Mold assembly for manufacturing reducing pipes |
| 03/23/2011 | CN201768770U Special-diameter cup for manufacturing special-diameter tubes |
| 03/23/2011 | CN101987330A Manufacturing method of super-thick laminar tearing resisting steel plate |
| 03/23/2011 | CN101623717B Manufacture method of D-shaped copper tube and forming device thereof |
| 03/17/2011 | DE10393652B4 Verfahren zur Herstellung eines Schalldämpfer- oder Katalysatorgehäuses A method for producing a muffler or catalytic converter housing |
| 03/16/2011 | CN101628644B Air-permeability aluminum foil and preparation method thereof |
| 03/15/2011 | US7905001 Finishing/burnishing tool |
| 03/10/2011 | US20110056263 Method for Producing Seamless Pipe and Method for Determining Length of Billet for Use in Producing Seamless Pipe |
| 03/09/2011 | EP2291249A1 Tube with fins having wings |
| 03/09/2011 | CN101608282B Drill rod material steel pipe resisting low temperature of -40 to -60 DEG C and manufacturing method thereof |
| 03/08/2011 | CA2474558C Slotted tube with reversible usage for heat exchangers |
| 03/03/2011 | WO2011026105A1 Axle spindle for tire inflation system |
| 03/03/2011 | WO2011024290A1 Method and system for manufacturing metal-plated steel pipe |
| 03/03/2011 | WO2011022747A1 Device and method for processing elongate workpieces without cutting |
| 03/03/2011 | CA2775024A1 Method and system for manufacturing metal-plated steel pipe |
| 03/03/2011 | CA2772658A1 Device and method for processing elongate workpieces without cutting |
| 03/02/2011 | CN201752721U Three-way pipe joint oil hydraulic press |
| 03/02/2011 | CN101983258A Manufacture of pipes |
| 03/02/2011 | CN101983110A Welded steel pipe welded with a high energy density beam, and a manufacturing method therefor |
| 03/02/2011 | CN101983109A Production-optimized method for producing a multilayered tube |
| 03/01/2011 | US7895875 Methods and systems for reducing tensile residual stresses in compressed tubing and metal tubing products produced from same |
| 02/24/2011 | DE102009038302A1 Pressure welding device for forming a tube made of tubularly bent strips, comprises compressing rollers formed for conveying the strips and for compressing two edges of the strips, and a drive unit to drive one of the compressing rollers |
| 02/23/2011 | EP2285508A1 Production-optimized method for producing a multilayered tube |
| 02/23/2011 | EP2285507A1 Method for producing a large steel tube |
| 02/23/2011 | CN101981363A A tubular article |
| 02/23/2011 | CN101979171A Processing technique for niobium alloy bar material |
| 02/23/2011 | CN101979170A Method for producing stainless steel belt of glasses frame |
| 02/22/2011 | US7892368 UOE steel pipe excellent in collapse strength and method of production thereof |
| 02/17/2011 | WO2011017752A1 Method of forming seamless pipe of titanium and / or titanium alloys |
| 02/17/2011 | US20110039120 Non-oriented electrical steel sheet and manufacturing method thereof |
| 02/17/2011 | DE102009050569A1 Kontaktstift zur Verwendung an Beleuchtungsmitteln sowie Verfahren zu dessen Herstellung Contact pin for use in illumination means and methods for its preparation |
| 02/16/2011 | EP2283166A1 Al-mn based aluminium alloy composition combined with a homogenization treatment |
| 02/16/2011 | EP2282853A1 Supporting core for producing hollow profiled elements |
| 02/16/2011 | CN101977705A Multi-layered corrugated tubular article |
| 02/16/2011 | CN101972795A Machining process of metal elbow |
| 02/16/2011 | CN101972794A Manufacture technology of High-strength non-magnetic thick-wall titanium alloy seamless tube |
| 02/16/2011 | CN101624676B Hot-rolled beam steel with a tensile strength of more than 710MPa and preparation method thereof |
| 02/16/2011 | CN101537439B Preparation process of high-performance and high accuracy rods and bars of biological titanium alloy |
| 02/10/2011 | US20110030446 Apparatus for forming a duct |
| 02/09/2011 | EP2280791A1 Method and device for the manufacture of multiple grooved wire |
| 02/09/2011 | CN201735626U Pipe conicity taper square pipe machine |
| 02/09/2011 | CN101970143A Glass-coated wires and methods for the production thereof |
| 02/09/2011 | CN101968141A Oil filling pipe and processing method thereof |
| 02/09/2011 | CN101175879B Bundle drawn metal fiber and its products and uses |
| 02/03/2011 | WO2011013445A1 Bead wire manufacturing method and manufacturing apparatus |
| 02/03/2011 | WO2011012766A1 Method for producing a gun barrel, device for producing a gun barrel and a gun barrel |
| 02/02/2011 | CN201728240U Novel die for processing Y-shaped three-way pipe |
| 02/02/2011 | CN101965414A High-strength steel plate excellent in low-temperature toughness, steel pipe, and processes for production of both |
| 02/02/2011 | CN101965260A Forming apparatus, shoe thereof and forming method |
| 02/02/2011 | CN101961737A Continuous casting and rolling production method of aluminum rod |
| 02/02/2011 | CN101961736A Continuous pickling and wiredrawing process of brass wire |
| 02/02/2011 | CN101329571B Closing-in force control device of closing-in welding machine |
| 02/01/2011 | US7877877 Method for manufacturing a solid housing |
| 01/27/2011 | WO2010122581A3 A low carbon welded tube and process of manufacture thereof |
| 01/27/2011 | US20110017334 Wired conduit segment and method of making same |
| 01/27/2011 | DE102006019823B4 Verfahren und Vorrichtung zur Herstellung von Rohren Method and device for production of pipes |
| 01/26/2011 | CN201720353U Expansion pipe manufacturing tooling and device thereof |
| 01/26/2011 | CN201720271U Molding mould for spirally welding filter pipes |
| 01/26/2011 | CN101332550B Cooling device for weld seam of fine-grained steel straight welded pipe |
| 01/25/2011 | CA2445474C Stationary welding device and method for longitudinal welding of profiles |