Patents-Review.com
ClassID:

37811 ⎘

B21B19/04 - CPC Classification

Classification description:

Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling Diescher mills, Stiefel disc piercers, Stiefel rotary piercers Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills

Recent Application in this class:
#1
20240247350
2024-07-25

SEAMLESS STEEL TUBE RESISTANT TO CARBON DIOXIDE CORROSION AND MANUFACTURING METHOD THEREFOR

 #2
20230339006
2023-10-26

High performance alloy for corrosion resistance

 #3
20230304118
2023-09-28

Method for Preparing Stainless Steel Seamless Tube with Ultra-High Cleanliness for Integrated Circuit and IC Industry Preparation Device, and Stainless Steel Seamless Tube

 #4
20230265947
2023-08-24

SEAMLESS STEEL PIPE AND METHOD OF MANUFACTURE THEREOF

 #5
20230211396
2023-07-06

Anti-Collapse Oil Casing with High Strength and Manufacturing Method Therefor

 #6
20230182185
2023-06-15

Skew rolling apparatus, method for manufacturing seamless pipe shell, and method for manufacturing seamless steel pipe

 #7
20230054014
2023-02-23

Method for producing seamless metal tube

 #8
20220297172
2022-09-22

High performance alloy for corrosion resistance

 #9
20220226870
2022-07-21

METHOD AND APPARATUS FOR DETERMINATION OF TWIST ANGLE DURING A ROLLING OPERATION

 #10
20220040742
2022-02-10

Method for preparing high-performance difficult-to-deform metal precision seamless pipe

 #11
20220008975
2022-01-13

Method for piercing titanium alloy solid billet

 #12
20210229147
2021-07-29

Cross-rolling mill with hydraulic roller actuator

 #13
20210178442
2021-06-17

Piercing machine, mandrel bar, and method for producing seamless metal pipe using the same

 #14
20210101194
2021-04-08

PIERCER PLUG

 #15
20200384514
2020-12-10

Production method of seamless steel pipe

 #16
20200276625
2020-09-03

Piercing machine, and method for producing seamless metal pipe using the same

 #17
20200188973
2020-06-18

Cross-rolling mill

 #18
20200156132
2020-05-21

Method for producing seamless metal pipe

 #19
20200109460
2020-04-09

Apparatus line for manufacturing seamless steel pipe and tube and method of manufacturing duplex seamless stainless steel pipe

 #20
20190300979
2019-10-03

Seamless steel pipe and method for producing the seamless steel pipe

 #21
20190151917
2019-05-23

Method of manufacturing piercer plug

 #22
20180282833
2018-10-04

Method for manufacturing bainite high-strength seamless steel tube, and bainite high-strength seamless steel tube

 #23
20180274054
2018-09-27

Seamless steel tube with high strength and toughness and manufacturing method therefor

 #24
20180265941
2018-09-20

Process for on-line quenching of seamless steel tube using residual heat and manufacturing method

 #25
20180154410
2018-06-07

Method for producing seamless metal tube

 #26
20180023158
2018-01-25

High-strength heavy-walled stainless steel seamless tube or pipe and method of manufacturing the same

 #27
20170335422
2017-11-23

Apparatus line for manufacturing seamless steel pipe and tube and method of manufacturing duplex seamless stainless steel pipe

 #28
20170333964
2017-11-23

HOT FORMING TOOL

 #29
20170274433
2017-09-28

Method for Transverse Rolling

 #30
20170173650
2017-06-22

COMBINED APPARATUS FOR ROLLING SEAMLESS TUBES

 #31
20170165729
2017-06-15

COMPACT PLANT FOR ROLLING SEAMLESS TUBES

 #32
20170001226
2017-01-05

PROCESS FOR MANUFACTURING SEAMLESS STEEL PIPE, HOLLOW SPRING UTILIZING SEAMLESS STEEL PIPE

 #33
20170001225
2017-01-05

Method for producing seamless metal pipe

 #34
20160265076
2016-09-15

Equipment line for manufacturing seamless steel tube or pipe and method of manufacturing high-strength stainless steel seamless tube or pipe for oil wells using the equipment line

 #35
20160256909
2016-09-08

Mandrel

 #36
20160236249
2016-08-18

Equipment line for manufacturing heavy-walled steel products

 #37
20160215359
2016-07-28

High-strength stainless steel pipe

 #38
20160160307
2016-06-09

Low alloy oil well steel pipe and method for manufacturing same

 #39
20160059285
2016-03-03

Integrated transverse rolling mill for seamless tubes

 #40
20150321233
2015-11-12

Piercing plug

 #41
20150314346
2015-11-05

Inner surface regulation tool, plug, mandrel, hot rolling mill, press piercing machine, and drawing machine

 #42
20150306646
2015-10-29

Manufacturing method and manufacturing apparatus of seamless metal pipe

 #43
20150298185
2015-10-22

Method and device for producing seamless steel pipes having low eccentricity

 #44
20150258591
2015-09-17

Plug for hot tube-making

 #45
20150246381
2015-09-03

Rolling plant, rolling mill and rolling method

 #46
20150217349
2015-08-06

Plug for rolling of seamless steel pipe, method for manufacturing the same and method for manufacturing seamless steel pipe using the same

 #47
20150196942
2015-07-16

Deoxidation of cross-rolled hollow blocks

 #48
20150191670
2015-07-09

Powder lubricant composition and method for manufacturing seamless steel pipe

 #49
20150183010
2015-07-02

Plug for hot pipe making

 #50
20150140208
2015-05-21

Method for regenerating a plug for use in a piercing machine

 #51
20150135513
2015-05-21

Method for producing plug for piercing-rolling

 #52
20150107322
2015-04-23

ROUND BILLET FOR SEAMLESS METAL TUBE AND METHOD FOR PRODUCING SEAMLESS METAL TUBE

 #53
20150075243
2015-03-19

Plug used in piercing machine

 #54
20150075241
2015-03-19

Equipment system for producing piercing-rolling plug

 #55
20150000363
2015-01-01

Rolling stand with skewed working rolls and a roll preloading device

 #56
20140346721
2014-11-27

Hollow spring utilizing seamless steel pipe

 #57
20140260494
2014-09-18

Piercing apparatus, plug used for piercing apparatus, and method for producing seamless steel pipe

 #58
20140250965
2014-09-11

Method of producing seamless metal pipe

 #59
20140245806
2014-09-04

Method of producing seamless metal pipe

 #60
20140033781
2014-02-06

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

 #61
20130333433
2013-12-19

Method for producing seamless hot-rolled pipes in continuous pipe rolling mills

 #62
20130327107
2013-12-12

HOT WORK TOOL AND METHOD FOR PRODUCING SAME

 #63
20130283879
2013-10-31

Method for manufacturing Ni base alloy pipe stock

 #64
20130276498
2013-10-24

Method of detecting fault in piercing-rolling and method of producing seamless pipe or tube

 #65
20130269407
2013-10-17

METHOD FOR PRODUCING SEAMLESS STEEL TUBE/PIPE

 #66
20130263436
2013-10-10

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

 #67
20130255342
2013-10-03

Method for producing seamless tube/pipe

 #68
20130239637
2013-09-19

Process for manufacturing seamless steel pipe, hollow spring utilizing seamless steel pipe

 #69
20130091916
2013-04-18

Method for producing seamless pipes

 #70
20130074563
2013-03-28

TUBE ROLLING PLANT

 #71
20120210761
2012-08-23

Plug, piercing-rolling mill, and method of producing seamless tube by using the same

 #72
20120137745
2012-06-07

Tube rolling plant

 #73
20110239720
2011-10-06

Production method of seamless pipe or tube, and oxidizing gas supply unit

 #74
20110056263
2011-03-10

Method for producing seamless pipe and method for determining length of billet for use in producing seamless pipe

 #75
20110023570
2011-02-03

Method for Producing High-Alloy Seamless Steel Pipe

 #76
20110023569
2011-02-03

Method for Producing Seamless Pipe

 #77
20100236670
2010-09-23

HEAVY WALL SEAMLESS STEEL PIPE FOR LINE PIPE AND A MANUFACTURING METHOD THEREOF

 #78
20100212387
2010-08-26

Method of and rolling mill for making seamless steel pipe

 #79
20100175450
2010-07-15

Method of producing seamless metal tube and punch for use therein

 #80
20100107714
2010-05-06

Pusher device for piercing and rolling and method of manufacturing seamless pipe or tube using the same

 #81
20100089111
2010-04-15

Piercer, plug and method of manufacturing seamless pipe or tube

 #82
20100058824
2010-03-11

Monitoring apparatus and monitoring method of seamless pipe or tube production conditions and manufacturing facilities of seamless pipe or tube

 #83
20100037976
2010-02-18

SEAMLESS STEEL PIPE, HOLLOW SPRING UTILIZING SEAMLESS STEEL PIPE, AND PROCESS FOR MANUFACTURING THE SAME

 #84
20100018281
2010-01-28

Method of manufacturing plug used to pierce and roll metal material, method of manufacturing metal pipe and plug used to pierce and roll metal material

 #85
20100011831
2010-01-21

Piercing mill

 #86
20100000281
2010-01-07

Method for manufacturing seamless steel pipe made of high Cr-high Ni alloy steel

 #87
20090301155
2009-12-10

Method of manufacturing seamless pipes

 #88
20090301151
2009-12-10

Lubricant composition for hot metal working and method of hot metal working using the same

 #89
20090293569
2009-12-03

Method for applying lubricant onto mandrel bar, method for controlling thickness of lubricant film on mandrel bar, and method for manufacturing seamless steel pipe

 #90
20090218014
2009-09-03

Method for producing duplex stainless steel seamless pipe

 #91
20090215655
2009-08-27

Lubricant for a hot plastic working

 #92
20090113970
2009-05-07

Method of making a seamless hollow body from steel

 #93
20090064749
2009-03-12

Process for producing stainless steel pipe

 #94
20090064748
2009-03-12

Process for manufacturing a seamless tube

 #95
20090044883
2009-02-19

Method of making a seamless hot-finished steel pipe, and device for carrying out the method

 #96
20090038359
2009-02-12

Method of manufacturing seamless pipe or tube

 #97
20090038358
2009-02-12

Method of manufacturing seamless pipe and tube

 #98
20090013750
2009-01-15

Application method of Cr-plated mandrel bar for hot rolling

 #99
20090000709
2009-01-01

Method for producing high chromium seamless pipe or tube

 #100
20080314109
2008-12-25

Plug for use in piercing mill

 #101
20080289388
2008-11-27

Piercing-rolling method and piercing-rolling apparatus for seamless tubes

 #102
20080047635
2008-02-28

Heavy wall seamless steel pipe for line pipe and a manufacturing method thereof

 #103
20080011037
2008-01-17

Process for manufacturing a seamless tube

 #104
20070251611
2007-11-01

Method for producing martensitic stainless steel tubes

 #105
20070214855
2007-09-20

System for supplying lubricant, apparatus for manufacturing seamless pipes or tubes, and method of manufacturing seamless pipes or tubes

 #106
20070181225
2007-08-09

Ni base alloy pipe stock and method for manufacturing the same

 #107
20070157691
2007-07-12

Process for producing seamless steel pipe

 #108
20070062238
2007-03-22

Method for manufacturing seamless steel pipe or tube

 #109
20070022796
2007-02-01

Method for manufacturing seamless pipes or tubes

 #110
20060283225
2006-12-21

Tube shell for manufacturing a seamless steel pipe and a method for its manufacture

 #111
20060174670
2006-08-10

Piercing method for manufacturing of seamless pipe

 #112
20060065032
2006-03-30

Method of manufacturing seamless tube

 #113
20050266927
2005-12-01

Seamless steel tube for drive shaft and method for manufacturing the same

 #114
20050210944
2005-09-29

Making method for seamless metallic tube