Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00

Industry

CPC
B21B23/00

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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B21Mechanical metalworking B21BROLLING OF METAL

Current Industry

B21B23/00Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Method for piercing titanium alloy solid billet
- Patent number 11,779,972
- Issue date Oct 10, 2023
- NORTHWESTERN POLYTECHNICAL UNIVERSITY
- Yanhui Yang
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Piercing machine, and method for producing seamless metal pipe usin...
- Patent number 11,511,326
- Issue date Nov 29, 2022
- Nippon Steel Corporation
- Yasuhiko Daimon
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method of quenching steel pipe, apparatus for quenching steel pipe,...
- Patent number 11,230,747
- Issue date Jan 25, 2022
- JFE Steel Corporation
- Hiroyuki Fukuda
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
High strength thick-walled electric-resistance-welded steel pipe fo...
- Patent number 11,053,564
- Issue date Jul 6, 2021
- JFE Steel Corporation
- Sota Goto
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Device for processing cross section of pipe
- Patent number 11,052,439
- Issue date Jul 6, 2021
- DAIKI INDUSTRY CO., LTD.
- Dong Baek Yoo
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Process of producing a duplex stainless steel tube
- Patent number 10,704,114
- Issue date Jul 7, 2020
- Sandvik Intellectual Property AB
- Erik Könberg
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method for producing hot-rolled seamless pipes having thickened ends
- Patent number 10,695,809
- Issue date Jun 30, 2020
- Vallourec Deutschland GmbH
- Rolf Kümmerling
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method and apparatus for making seamless pipe
- Patent number 10,632,514
- Issue date Apr 28, 2020
- SMS GROUP GMBH
- Hubert Strank
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Electric resistance welded steel pipe and manufacturing method ther...
- Patent number 10,584,405
- Issue date Mar 10, 2020
- JFE Steel Corporation
- Shunsuke Toyoda
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Equipment line for manufacturing seamless steel tube or pipe and me...
- Patent number 10,570,471
- Issue date Feb 25, 2020
- JFE Steel Corporation
- Shunsuke Sasaki
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Equipment line for manufacturing heavy-walled steel products
- Patent number 10,562,085
- Issue date Feb 18, 2020
- JFE Steel Corporation
- Shunsuke Sasaki
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
High-strength welded steel pipe for airbag inflator and method for...
- Patent number 10,301,703
- Issue date May 28, 2019
- JFE Steel Corporation
- Masatoshi Aratani
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Powder lubricant composition and method for manufacturing seamless...
- Patent number 10,227,540
- Issue date Mar 12, 2019
- Nippon Steel & Sumitomo Metal Corporation
- Sumio Iida
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Process for hot-rolling metallic hollow bodies and corresponding ho...
- Patent number 10,166,583
- Issue date Jan 1, 2019
- SMS GROUP GMBH
- Hans-Joachim Pehle
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Integrated transverse rolling mill for seamless tubes
- Patent number 10,166,581
- Issue date Jan 1, 2019
- Danieli & C. Officine Meccaniche SpA
- Ettore Cernuschi
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Spinning method and spinning apparatus
- Patent number 10,166,582
- Issue date Jan 1, 2019
- Toyota Jidosha Kabushiki Kaisha
- Yukitaka Kunimoto
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Device and method for forming pipe elements
- Patent number 10,161,547
- Issue date Dec 25, 2018
- Victaulic Company
- Michael R. Novitsky
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Device and method to shape worked pieces
- Patent number 10,124,388
- Issue date Nov 13, 2018
- Repkon Machine and Tool Industry and Trade, Inc.
- Karl-Heinz Köstermeier
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method for producing a tempered seamlessly hot-fabricated steel pipe
- Patent number 10,100,384
- Issue date Oct 16, 2018
- Vallourec Deutschland GmbH
- Christof Delhaes
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method of roll-forming with gap fillers for solenoid used for trans...
- Patent number 10,049,813
- Issue date Aug 14, 2018
- BorgWarner Inc.
- Philip A. Ruehl
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method and device for producing tapering pipe sections on ground sc...
- Patent number 9,987,670
- Issue date Jun 5, 2018
- Krinner Innovation GmbH
- Guenther Thurner
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Electric resistance welded steel pipe or steel tube having excellen...
- Patent number 9,873,164
- Issue date Jan 23, 2018
- JFE Steel Corporation
- Shunsuke Toyoda
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Deoxidation of cross-rolled hollow blocks
- Patent number 9,833,820
- Issue date Dec 5, 2017
- SMS MEER GMBH
- Peter Thieven
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method for producing seamless pipes
- Patent number 9,731,336
- Issue date Aug 15, 2017
- COATING MANAGEMENT SWITZERLAND GMBH
- Raimo Peltoniemi
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Descaling device for the interior of tubes and descaling process
- Patent number 9,687,894
- Issue date Jun 27, 2017
- Danieli & C. Officine Meccaniche SpA
- Alfredo Poloni
- B08 - CLEANING
Information Patent Grant
Device and method for rolling of pipe blanks
- Patent number 9,616,476
- Issue date Apr 11, 2017
- SMS GROUP GMBH
- Thomas Winterfeldt
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Rolling stand with skewed working rolls and a roll preloading device
- Patent number 9,522,417
- Issue date Dec 20, 2016
- Danieli & C. Officine Meccaniche SpA
- Ettore Cernuschi
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Production method of seamless tube using round bar made of high Cr-...
- Patent number 9,468,959
- Issue date Oct 18, 2016
- Nippon Steel & Sumitomo Metal Corporation
- Naoya Hirase
- C21 - METALLURGY OF IRON
Information Patent Grant
Method and device for producing conical pipe sections in helical fo...
- Patent number 9,421,591
- Issue date Aug 23, 2016
- Krinner Innovation GmbH
- Guenther Thurner
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Manufacture method of tubular member and tubular member manufacture...
- Patent number 9,403,199
- Issue date Aug 2, 2016
- Toyota Jidosha Kabushiki Kaisha
- Yoshiaki Kadoma
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR PIERCING TITANIUM ALLOY SOLID BILLET
- Publication number 20220008975
- Publication date Jan 13, 2022
- Northwestern Polytechnical University
- Yanhui YANG
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
TUBULAR STRUCTURE REINFORCING
- Publication number 20210231237
- Publication date Jul 29, 2021
- Keystone Tower Systems, Inc.
- Eric D. Smith
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
PIERCING MACHINE, AND METHOD FOR PRODUCING SEAMLESS METAL PIPE USIN...
- Publication number 20200276625
- Publication date Sep 3, 2020
- NIPPON STEEL CORPORATION
- Yasuhiko DAIMON
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
DEVICE FOR PROCESSING CROSS SECTION OF PIPE
- Publication number 20190299264
- Publication date Oct 3, 2019
- DAIKI INDUSTRY CO., LTD.
- Dong Baek YOO
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
METHOD FOR PRODUCING A HOT-FORMED STEEL COMPONENT, AND HOT FORMED S...
- Publication number 20190085434
- Publication date Mar 21, 2019
- SALZGITTER FLACHSTAHL GMBH
- PETER PALZER
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
HIGH-STRENGTH WELDED STEEL PIPE FOR AIRBAG INFLATOR AND METHOD FOR...
- Publication number 20180023163
- Publication date Jan 25, 2018
- JFE STEEL CORPORATION
- Masatoshi Aratani
- B60 - VEHICLES IN GENERAL
Information Patent Application
HIGH STRENGTH THICK-WALLED ELECTRIC-RESISTANCE-WELDED STEEL PIPE FO...
- Publication number 20170362678
- Publication date Dec 21, 2017
- JFE STEEL CORPORATION
- Sota GOTO
- C21 - METALLURGY OF IRON
Information Patent Application
ELECTRIC RESISTANCE WELDED STEEL PIPE AND MANUFACTURING METHOD THER...
- Publication number 20170356071
- Publication date Dec 14, 2017
- JFE STEEL CORPORATION
- Shunsuke TOYODA
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Method of Roll-Forming With Gap Fillers For Solenoid Used for Trans...
- Publication number 20170309399
- Publication date Oct 26, 2017
- BORGWARNER, INC.
- Philip A. Ruehl
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
METHOD AND SYSTEM FOR THE PRODUCTION OF A SEAMLESS HOT-ROLLED TUBE...
- Publication number 20170283897
- Publication date Oct 5, 2017
- SMS Group GmbH
- Helge DAEHNDEL
- C21 - METALLURGY OF IRON
Information Patent Application
Method for Forming an End Part of a Tube, Respective Device for Per...
- Publication number 20170021401
- Publication date Jan 26, 2017
- EFS Euro Forming Service GmbH
- Manfred Klever
- B60 - VEHICLES IN GENERAL
Information Patent Application
ALPHA + BETA TITANIUM ALLOY WELDED PIPE EXCELLENT IN STRENGTH AND R...
- Publication number 20170014882
- Publication date Jan 19, 2017
- NIPPON STEEL & SUMITOMO METAL CORPORATION
- Akira KAWAKAMI
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
METHOD AND DEVICE FOR PRODUCING TAPERING PIPE SECTIONS ON GROUND SC...
- Publication number 20160318082
- Publication date Nov 3, 2016
- KRINNER INNOVATION GMBH
- Guenther THURNER
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
SPINNING METHOD AND SPINNING APPARATUS
- Publication number 20160059286
- Publication date Mar 3, 2016
- Toyota Jidosha Kabushiki Kaisha
- Yukitaka KUNIMOTO
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Apparatus for Working Tubes, Bars, Sections and Similar Blanks, Com...
- Publication number 20150314348
- Publication date Nov 5, 2015
- CTE SISTEMI S.r.l.
- Marco Dani
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
ELECTRIC RESISTANCE WELDED STEEL PIPE OR STEEL TUBE HAVING EXCELLEN...
- Publication number 20150251268
- Publication date Sep 10, 2015
- JFE STEEL CORPORATION
- Shunsuke Toyoda
- C21 - METALLURGY OF IRON
Information Patent Application
METHOD OF COLD ROLLING A SEAMLESS PIPE
- Publication number 20150101381
- Publication date Apr 16, 2015
- NIPPON STEEL & SUMITOMO METAL CORPORATION
- Osamu Miyahara
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
METHOD OF FORMING INTEGRATED DRIVE SHAFT AND YOKE
- Publication number 20150096344
- Publication date Apr 9, 2015
- SZUBA CONSULTING, INC.
- Joseph Szuba
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
METHOD FOR ROLLING/DRAWING NICKEL-FREE HIGH-NITROGEN STAINLESS STEE...
- Publication number 20150013820
- Publication date Jan 15, 2015
- NATIONAL INSTITUTE FOR MATERIALS SCIENCE
- Tetsushi Taguchi
- C21 - METALLURGY OF IRON
Information Patent Application
MANUFACTURE METHOD OF TUBULAR MEMBER AND TUBULAR MEMBER MANUFACTURE...
- Publication number 20140261840
- Publication date Sep 18, 2014
- Toyota Jidosha Kabushiki Kaisha
- Yoshiaki Kadoma
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Methods for Manufacture of Pipe Element Having Shoulder, Groove and...
- Publication number 20140260480
- Publication date Sep 18, 2014
- Victaulic Company
- Michael R. Novitsky
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
METHOD OF PRODUCING SEAMLESS METAL PIPE
- Publication number 20140250965
- Publication date Sep 11, 2014
- Kouji Yamane
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
METHOD OF PRODUCING SEAMLESS METAL PIPE
- Publication number 20140245806
- Publication date Sep 4, 2014
- NIPPON STEEL & SUMITOMO METAL CORPORATION
- Kouji Yamane
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Pipe Element Having Shoulder, Groove and Bead
- Publication number 20140210206
- Publication date Jul 31, 2014
- Douglas R. Dole
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
METHOD AND DEVICE FOR PRODUCING A HOLLOW METALLIC BILLET FROM A MET...
- Publication number 20140033781
- Publication date Feb 6, 2014
- Paul Stoll
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
METHOD FOR PRODUCING SEAMLESS HOT-ROLLED PIPES IN CONTINUOUS PIPE R...
- Publication number 20130333433
- Publication date Dec 19, 2013
- V & M DEUTSCHLAND GMBH
- Rolf Kümmerling
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
METHOD FOR STRAIGHTENING
- Publication number 20130327110
- Publication date Dec 12, 2013
- NIPPON STEEL & SUMITOMO METAL CORPORATION
- Kazuhiro Uchida
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Ni BASE ALLOY PIPE STOCK AND METHOD FOR MANUFACTURING THE SAME
- Publication number 20130283879
- Publication date Oct 31, 2013
- Masaaki IGARASHI
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHODS OF MANUFACTURING STEEL TUBES FOR DRILLING RODS WITH IMPROVE...
- Publication number 20130264123
- Publication date Oct 10, 2013
- Tenaris Connections Limited
- Eduardo Altschuler
- C21 - METALLURGY OF IRON
Information Patent Application
PRODUCTION METHOD OF ROUND BAR FOR SEAMLESS TUBE MADE OF HIGH Cr-HI...
- Publication number 20130263436
- Publication date Oct 10, 2013
- NIPPON STEEL & SUMITOMO METAL CORPORATION
- Naoya Hirase
- C21 - METALLURGY OF IRON

Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Method for piercing titanium alloy solid billet

Piercing machine, and method for producing seamless metal pipe usin...

Method of quenching steel pipe, apparatus for quenching steel pipe,...

High strength thick-walled electric-resistance-welded steel pipe fo...

Device for processing cross section of pipe

Process of producing a duplex stainless steel tube

Method for producing hot-rolled seamless pipes having thickened ends

Method and apparatus for making seamless pipe

Electric resistance welded steel pipe and manufacturing method ther...

Equipment line for manufacturing seamless steel tube or pipe and me...

Equipment line for manufacturing heavy-walled steel products

High-strength welded steel pipe for airbag inflator and method for...

Powder lubricant composition and method for manufacturing seamless...

Process for hot-rolling metallic hollow bodies and corresponding ho...

Integrated transverse rolling mill for seamless tubes

Spinning method and spinning apparatus

Device and method for forming pipe elements

Device and method to shape worked pieces

Method for producing a tempered seamlessly hot-fabricated steel pipe

Method of roll-forming with gap fillers for solenoid used for trans...

Method and device for producing tapering pipe sections on ground sc...

Electric resistance welded steel pipe or steel tube having excellen...

Deoxidation of cross-rolled hollow blocks

Method for producing seamless pipes

Descaling device for the interior of tubes and descaling process

Device and method for rolling of pipe blanks

Rolling stand with skewed working rolls and a roll preloading device

Production method of seamless tube using round bar made of high Cr-...

Method and device for producing conical pipe sections in helical fo...

Manufacture method of tubular member and tubular member manufacture...

Patents Applicationslast 30 patents

METHOD FOR PIERCING TITANIUM ALLOY SOLID BILLET

TUBULAR STRUCTURE REINFORCING

PIERCING MACHINE, AND METHOD FOR PRODUCING SEAMLESS METAL PIPE USIN...

DEVICE FOR PROCESSING CROSS SECTION OF PIPE

METHOD FOR PRODUCING A HOT-FORMED STEEL COMPONENT, AND HOT FORMED S...

HIGH-STRENGTH WELDED STEEL PIPE FOR AIRBAG INFLATOR AND METHOD FOR...

HIGH STRENGTH THICK-WALLED ELECTRIC-RESISTANCE-WELDED STEEL PIPE FO...

ELECTRIC RESISTANCE WELDED STEEL PIPE AND MANUFACTURING METHOD THER...

Method of Roll-Forming With Gap Fillers For Solenoid Used for Trans...

METHOD AND SYSTEM FOR THE PRODUCTION OF A SEAMLESS HOT-ROLLED TUBE...

Method for Forming an End Part of a Tube, Respective Device for Per...

ALPHA + BETA TITANIUM ALLOY WELDED PIPE EXCELLENT IN STRENGTH AND R...

METHOD AND DEVICE FOR PRODUCING TAPERING PIPE SECTIONS ON GROUND SC...

SPINNING METHOD AND SPINNING APPARATUS

Apparatus for Working Tubes, Bars, Sections and Similar Blanks, Com...

ELECTRIC RESISTANCE WELDED STEEL PIPE OR STEEL TUBE HAVING EXCELLEN...

METHOD OF COLD ROLLING A SEAMLESS PIPE

METHOD OF FORMING INTEGRATED DRIVE SHAFT AND YOKE

METHOD FOR ROLLING/DRAWING NICKEL-FREE HIGH-NITROGEN STAINLESS STEE...

MANUFACTURE METHOD OF TUBULAR MEMBER AND TUBULAR MEMBER MANUFACTURE...

Methods for Manufacture of Pipe Element Having Shoulder, Groove and...

METHOD OF PRODUCING SEAMLESS METAL PIPE

METHOD OF PRODUCING SEAMLESS METAL PIPE

Pipe Element Having Shoulder, Groove and Bead

METHOD AND DEVICE FOR PRODUCING A HOLLOW METALLIC BILLET FROM A MET...

METHOD FOR PRODUCING SEAMLESS HOT-ROLLED PIPES IN CONTINUOUS PIPE R...

METHOD FOR STRAIGHTENING

Ni BASE ALLOY PIPE STOCK AND METHOD FOR MANUFACTURING THE SAME

METHODS OF MANUFACTURING STEEL TUBES FOR DRILLING RODS WITH IMPROVE...

PRODUCTION METHOD OF ROUND BAR FOR SEAMLESS TUBE MADE OF HIGH Cr-HI...