ClassID:

43342

B23K31/027 - CPC Classification

Classification description:

Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding Making tubes with soldering or welding

Recent Application in this class:
#1
20260145278
2026-05-28

SULFUR-RESISTANT AND CORROSION-RESISTANT LOW-CARBON ALLOY-BASED COILED TUBING AND PREPARATION METHOD THEREOF

#2
20250304291
2025-10-02

SYSTEMS AND METHODS FOR DEPLOYABLE LINEAR STRUCTURES WITH DOUBLERS

#3
20250253450
2025-08-07

ENCLOSURE FOR BATTERY CELL INCLUDING QUENCH HARDENED STEEL

#4
20250178116
2025-06-05

ELECTRIC RESISTANCE WELDED PIPE OR TUBE AND METHOD OF PRODUCING SAME

#5
20250073824
2025-03-06

MANUFACTURING METHOD FOR WELDED STEEL PIPE HAVING SUPERIOR WEAR RESISTANCE

#6
20250060054
2025-02-20

AUSTENITIC WELDED STEEL TUBE HAVING WEAR RESISTANCE AND MANUFACTURING METHOD FOR SAME

#7
20240326180
2024-10-03

METHOD OF MAKING A WELD CONNECTION FOR A FLUID LINE, METHOD OF DISCONNECTING IT, WELDED FLUID LINE CONNECTION, AND MOUNTING TOOL

#8
20240316699
2024-09-26

APPARATUS, SYSTEMS AND METHODS FOR A BRAZED JOINT

#9
20240316613
2024-09-26

STEEL PIPE OUT-OF-ROUNDNESS PREDICTION METHOD, STEEL PIPE OUT-OF-ROUNDNESS CONTROL METHOD, STEEL PIPE MANUFACTURING METHOD, STEEL PIPE OUT-OF-ROUNDNESS PREDICTION MODEL GENERATION METHOD, AND STEEL PIPE OUT-OF-ROUNDNESS PREDICTION DEVICE

#10
20240255076
2024-08-01

Method for producing a steel underwater pipe that is able to carry a corrosive fluid

#11
20240183467
2024-06-06

LARGE-DIAMETER THIN-WALL SPIRAL WELDED PIPE AND METHOD FOR MANUFACTURING SAME

#12
20240175113
2024-05-30

DUPLEX STAINLESS STEEL WELDED JOINT

#13
20240173786
2024-05-30

Material deposition for fuel nozzle joint

#14
20240024988
2024-01-25

Automatic weldding method and device for prestressed tubular piles

#15
20240017358
2024-01-18

POSITION DETECTION APPARATUS FOR SEAM PORTION AND HEATING PORTION OF WELDED STEEL PIPE, MANUFACTURING EQUIPMENT FOR WELDED STEEL PIPE, POSITION DETECTION METHOD FOR SEAM PORTION AND HEATING PORTION OF WELDED STEEL PIPE, MANUFACTURING METHOD FOR WELDED STEEL PIPE, AND QUALITY CONTROL METHOD FOR WELDED STEEL PIPE

#16
20230381895
2023-11-30

FABRICATING PIPE-IN-PIPE (PIP) PIPELINES

#17
20230201974
2023-06-29

Method for attaching a tube to a workpiece

#18
20230201901
2023-06-29

Sheet transitioning in spiral formed structures

#19
20230151450
2023-05-18

INTEGRATED WELDING AND THERMAL PROCESSING JOINING METHOD FOR CREEP STRENGTH ENHANCED FERRITIC STEELS

#20
20230129303
2023-04-27

Hot-rolled steel sheet having excellent expandability and method for manufacturing same

#21
20230104816
2023-04-06

Material deposition for fluid nozzle joints

#22
20220373109
2022-11-24

Double-wall spiral welded pipe and manufacturing method thereof

#23
20220314374
2022-10-06

PURGE WALL SYSTEM FOR WELDING

#24
20220268360
2022-08-25

Metal bellows for downhole use

#25
20220266323
2022-08-25

Double walled tube segment and method for producing said tube segment

#26
20220235814
2022-07-28

Buckling-resistant thin-wall drive shafts

#27
20220220987
2022-07-14

PROTECTIVE TUBE FOR INSERTION INTO A PIPE OR VESSEL WITH REDUCED SENSITIVITY TO VORTEX INDUCED VIBRATIONS

#28
20220106136
2022-04-07

Transportation system

#29
20220105456
2022-04-07

Devices, systems and methods for a filter

#30
20220057129
2022-02-24

Method for manufacturing evaporator for ice-making and evaporator for ice-making

#31
20220049800
2022-02-17

Method for producing a steel underwater pipe that is able to carry a corrosive fluid

#32
20220016684
2022-01-20

Method for manufacturing torsion beam

#33
20210299797
2021-09-30

SYSTEM AND METHOD FOR CARRYING OUT OPERATIONS ALONG AN ANNULAR JUNCTION PORTION OF A PIPELINE AND LAYING VESSEL COMPRISING SAID SYSTEM

#34
20210299796
2021-09-30

Device for preheating before welding and post-welding heat treatment of tank

#35
20210293359
2021-09-23

Work hardened welds and methods for same

#36
20210292107
2021-09-23

Wear resistant granular direction altering device

#37
20210268612
2021-09-02

Repair welding method

#38
20210268563
2021-09-02

Systems and methods for production of metallurgically bonded clad billet and products thereof, and metallurgically bonded clad billet

#39
20210262594
2021-08-26

Method for producing a number of pipes having a predefined pipe diameter, pipe, and piping system

#40
20210253379
2021-08-19

TRANSPORTATION SYSTEM

#41
20210252649
2021-08-19

Boiler tube panel installation device and method of aligning

#42
20210245307
2021-08-12

ASSEMBLY AND WELDING UNIT FOR MANUFACTURING PIPES

#43
20210187671
2021-06-24

System of elongated tubes and a joint

#44
20210180729
2021-06-17

Dual metal adapter

#45
20210138881
2021-05-13

High strength aluminum alloy door beam

#46
20210129234
2021-05-06

Core Bit Having a Spiral-Tube-Shaped Drill Shaft, and Method for Producing a Spiral-Tube-Shaped Drill Shaft for a Core Bit

#47
20210108743
2021-04-15

Method for attaching an anchorage element to an element of the armor of a flexible pipe, associated pipe and associated fitting method

#48
20210087647
2021-03-25

Hot-rolled steel sheet having excellent expandability and method for manufacturing same

#49
20210071783
2021-03-11

METHOD OF PREPARING A PIPE-SECTION

#50
20210023598
2021-01-28

Sheet transitioning in spiral formed structures

#51
20200338670
2020-10-29

Method of manufacturing a pipe having a connecting flange

#52
20200324329
2020-10-15

Cylindrical tube formation

#53
20200246906
2020-08-06

Welding operation monitoring system and welding operation monitoring method

#54
20200224813
2020-07-16

Electric-resistance-welded stainless clad steel pipe or tube

#55
20200171558
2020-06-04

Sheet transitioning in spiral formed structures

#56
20200124129
2020-04-23

Damper with two-piece shell

#57
20200055150
2020-02-20

ULTRA HIGH VACUUM LASER WELDER SYSTEM

#58
20200055108
2020-02-20

Method and device for roll seam welding container shells

#59
20200038929
2020-02-06

APPARATUS, METHOD, AND PROGRAM FOR MONITORING OPERATION OF HIGH FREQUENCY RESISTANCE WELDING AND INDUCTION HEATING WELDING OF ELECTRIC RESISTANCE WELDED STEEL PIPE

#60
20200030926
2020-01-30

Manufacturing method for cylindrical parts

#61
20200001339
2020-01-02

Method for manufacturing clad steel pipe

#62
20190381685
2019-12-19

Pipe Drilling Tool And Method For Joining Pipes Using The Same

#63
20190300301
2019-10-03

TRANSPORTATION SYSTEM

#64
20190299322
2019-10-03

Method of producing endless metal ring

#65
20190226610
2019-07-25

Apparatus and method for strengthening welded-lap joints for steel pipeline

#66
20190224786
2019-07-25

Position adjustable grapple attachment

#67
20190219218
2019-07-18

Method of producing electric-resistance-welded stainless clad steel pipe or tube

#68
20190201221
2019-07-04

Systems and method for stent manufacturing using protective shields

#69
20190184445
2019-06-20

System, method and apparatus for manipulating a workpiece

#70
20190151920
2019-05-23

Sheet transitioning in spiral formed structures

#71
20190099821
2019-04-04

Method for welding steel pipe in steel pipe structure and joint

#72
20190076901
2019-03-14

Cylindrical tube formation

#73
20190063030
2019-02-28

Foundation pile for a wind turbine

#74
20190022801
2019-01-24

METHOD OF MAKING A CORROSION RESISTANT TUBE

#75
20180363809
2018-12-20

Methods for manufacturing metal-resin composite pipe that can be easily wound into ring shape

#76
20180354080
2018-12-13

Method of manufacturing a welded tube

#77
20180313625
2018-11-01

APPARATUS AND METHOD FOR CONNECTING COMPONENTS OF A FIREARM SUPPRESSOR

#78
20180281117
2018-10-04

Thick, long seam welding system and method for distortion control and non post weld heat treatment of pipeline hot tap fittings

#79
20180221979
2018-08-09

Method and system for welding conduits

#80
20180193893
2018-07-12

Cylindrical tube formation

#81
20180111233
2018-04-26

Welding positioning tool with internal gas ports

#82
20180104731
2018-04-19

Steel pipe, steel pipe structure, method of manufacturing steel pipe, and method of designing steel pipe

#83
20180066781
2018-03-08

Triple-weld fitting

#84
20180056354
2018-03-01

Sheet transitioning in spiral formed structures

#85
20180051363
2018-02-22

Thick steel plate for structural pipes or tubes, method of producing thick steel plate for structural pipes or tubes, and structural pipes and tubes

#86
20180023163
2018-01-25

High-strength welded steel pipe for airbag inflator and method for manufacturing the same

#87
20180021891
2018-01-25

Near-weld purge gas delivery system

#88
20180009067
2018-01-11

Rollout wheel

#89
20170348803
2017-12-07

Method for forming a brazed joint

#90
20170334312
2017-11-23

Station with loop configuration for hyperloop transportation system

#91
20170312854
2017-11-02

Method for producing a tube from metal

#92
20170304927
2017-10-26

System and method for venting air in a welding system

#93
20170239988
2017-08-24

Axle suspension system having an axle wrap and method of manufacture

#94
20170234463
2017-08-17

Apparatus and method for strengthening welded-lap joints for steel pipeline

#95
20170226604
2017-08-10

Method for producing a retort for a nitriding furnace and retort

#96
20170152668
2017-06-01

Distribution boom for stationary or mobile viscous material pumps

#97
20170100765
2017-04-13

METHOD OF FORMING A TUBULAR MEMBER

#98
20170089649
2017-03-30

HEAT TRANSFER TUBE CONSTRUCTED OF TIN BRASS ALLOY

#99
20170066299
2017-03-09

Stabilizer bar and process of producing a stabilizer bar

#100
20170051384
2017-02-23

APPARATUS, MANUFACTURE, COMPOSITION AND METHOD FOR PRODUCING LONG LENGTH TUBING AND USES THEREOF

#101
20170029918
2017-02-02

Method for manufacturing a strip having a variable thickness and associated strip

#102
20170022590
2017-01-26

Steel material for highly deformable line pipes having superior strain aging resistance and superior HIC resistance, method for manufacturing same, and welded steel pipe

#103
20170022583
2017-01-26

Steel material for highly deformable line pipes having superior strain aging resistance and superior HIC resistance, method for manufacturing same, and welded steel pipe

#104
20170021445
2017-01-26

METHOD AND APPARATUS FOR FORMING CLAD METAL PRODUCTS

#105
20160368034
2016-12-22

Method of manufacturing a welded tubular section using in-line notching and trimming initiated after roll-forming and welding

#106
20160362759
2016-12-15

METHOD FOR PRODUCING HOT-ROLLED SEAMLESS PIPES FROM TRANSFORMABLE STEEL, IN PARTICULAR FOR PIPELINES FOR DEEP-WATER APPLICATIONS, AND CORRESPONDING PIPES

#107
20160354875
2016-12-08

Position adjustable grapple attachment

#108
20160327188
2016-11-10

Dual walled titanium tubing and methods of manufacturing the tubing

#109
20160305194
2016-10-20

Heat treated heavy weight drill pipe

#110
20160264811
2016-09-15

Container coating compositions

#111
20160258035
2016-09-08

Method for producing a hot-formed and quench-hardened motor vehicle component formed by internal high-pressure forming

#112
20160256961
2016-09-08

Near-weld purge gas delivery system

#113
20160230350
2016-08-11

Transportation system

#114
20160229646
2016-08-11

Transportation system

#115
20160229419
2016-08-11

Transportation system

#116
20160229418
2016-08-11

Transportation system

#117
20160229417
2016-08-11

Transportation system

#118
20160229416
2016-08-11

Transportation system

#119
20160228997
2016-08-11

Dual walled titanium tubing and methods of manufacturing the tubing

#120
20160193784
2016-07-07

3D PRINTER AND SCANNER FRAME

#121
20160186530
2016-06-30

METHOD FOR IN-WELLBORE WELDING

#122
20160184532
2016-06-30

Medical hollow needle assembly and method of manufacturing hollow needle

#123
20160114366
2016-04-28

Apparatus and method for the continuous and progressive shaping of metal strips to give a profile with longitudinally varying cross section

#124
20160109052
2016-04-21

High temperature field joints

#125
20160096240
2016-04-07

Subterranean screen assembly manufacturing method

#126
20160089742
2016-03-31

Method and system for welding conduits

#127
20160085023
2016-03-24

Optical fiber coating to reduce friction and static charge

#128
20160082492
2016-03-24

Method for producing a multi-layer large pipe

#129
20160033059
2016-02-04

FLOWFORMING CORROSION RESISTANT ALLOY TUBES

#130
20160018049
2016-01-21

High temperature insulated pipelines

#131
20150361518
2015-12-17

500 MPA grade longitudinally-welded steel pipe with low yield ratio and manufacturing method therefor

#132
20150345876
2015-12-03

Heat exchanger

#133
20150336612
2015-11-26

Lightweight vehicle beam

#134
20150299902
2015-10-22

QUENCH TUBE FOR POLYMER FIBER EXTRUSION

#135
20150298451
2015-10-22

GRAPHIC ARTS SLEEVE AND SUPPORT MANDREL

#136
20150239032
2015-08-27

Methods for forming an orthogonal end on a helical stent

#137
20150233500
2015-08-20

Connection method for a braided hose

#138
20150217352
2015-08-06

Method and device for separating wound tubes having welded parts

#139
20150170801
2015-06-18

SYSTEM FOR MANUFACTURING A COIL TUBING WITH THE TUBING ENCAPSULATED CABLE INCORPORATED INTO THE COIL TUBING

#140
20150165567
2015-06-18

Adjustable roller carrier

#141
20150159787
2015-06-11

Thin wall welding

#142
20150158099
2015-06-11

Cutting-off machine

#143
20150144681
2015-05-28

Method for making corrosion resistant fluid conducting parts

#144
20150129556
2015-05-14

Device and method for producing at least partially closed profiles or tubular components from metal sheet

#145
20150122376
2015-05-07

Site conditions thick-wall P92 pipe local heat treatment method

#146
20150102088
2015-04-16

Method of producing metallic composite pipes

#147
20150094979
2015-04-02

Misalignment calculation system

#148
20150090370
2015-04-02

High strength steel plate having low yield ratio excellent in terms of strain ageing resistance, method of manufacturing the same and high strength welded steel pipe made of the same

#149
20150086440
2015-03-26

Method for manufacturing a tube sheet and heat exchanger assembly for a pool reactor or pool condenser; corresponding tube sheet and heat exchanger assembly

#150
20150076117
2015-03-19

METHOD AND DEVICE FOR LONGITUDINAL SEAM WELDING OF PROFILED TUBES ON A TUBE WELDING SYSTEM

#151
20150060436
2015-03-05

Device for connecting the ends of pipes made of steel by means of an orbital welding process

#152
20150059912
2015-03-05

High strength steel plate having low yield ratio excellent in terms of strain ageing resistance, method of manufacturing the same and high strength welded steel pipe made of the same

#153
20150048146
2015-02-19

Method for producing welded tubes from steel

#154
20150041017
2015-02-12

High temperature field joints

#155
20150003191
2015-01-01

STIRRER SHAFT PIPE AND METHOD FOR PRODUCING SAME

#156
20140346761
2014-11-27

Steering shaft bearing unit

#157
20140345742
2014-11-27

Coiled tubing with heat resistant conduit

#158
20140262337
2014-09-18

Fatigue resistant coiled tubing

#159
20140246482
2014-09-04

Forming body for sealing an object to be welded, more particularly a pipe

#160
20140202576
2014-07-24

Method for producing welded steel pipe and welded steel pipe

#161
20140110593
2014-04-24

Method and Apparatus for Fabricating Boron Coated Straws for Neutron Detectors

#162
20140054358
2014-02-27

Coiled tubing with retainer for conduit

#163
20140047725
2014-02-20

Pipe fitting layout system

#164
20140042740
2014-02-13

METHODS AND SYSTEMS FOR CLADDING SURFACES OF COMPONENTS USING HOT WIRE LASER WELDING

#165
20140042211
2014-02-13

METHOD AND SYSTEM FOR WELDING CONDUITS

#166
20140042210
2014-02-13

ROUNDING SYSTEM AND METHOD USED IN THE MANUFACTURE OF CONICAL OR CYLINDRICAL STRUCTURES

#167
20140027497
2014-01-30

Method of manufacturing coiled tubing using multi-pass friction stir welding

#168
20140004270
2014-01-02

Method and apparatus for forming clad metal products

#169
20130334751
2013-12-19

Apparatus for guiding tube processing devices

#170
20130319375
2013-12-05

Tubular pressure accumulator, in particular for mixture-compressing, spark-ignited internal combustion engines

#171
20130263796
2013-10-10

High-temperature piping product and method for producing same

#172
20130180472
2013-07-18

DOUBLE-WALLED TUBE, METHOD OF MANUFACTURING DOUBLE-WALLED TUBE AND STEAM GENERATOR

#173
20130140850
2013-06-06

Lightweight vehicle beam

#174
20130068387
2013-03-21

Position adjustable grapple attachment

#175
20130008218
2013-01-10

Method of forming a tubular member

#176
20120291907
2012-11-22

High-strength welded steel pipe and method for producing the same

#177
20120267320
2012-10-25

Subsea contaminate remediation apparatus and methods

#178
20120261387
2012-10-18

Method for producing welded helical-seam tubes having optimized tube geometry

#179
20120231168
2012-09-13

Apparatus and method for coating pipes or pipe sections

#180
20120213937
2012-08-23

Position adjustable grapple attachment

#181
20120160361
2012-06-28

Construction and Manufacturing of Long Tubes with Embedded Corrosion- and Wear-Resistant Coatings Applied Directly to the Interior Surfaces

#182
20120048913
2012-03-01

Welding alignment and spacing article

#183
20120048459
2012-03-01

Method for eliminating carbon contamination of platinum-containing components for a glass making apparatus

#184
20120018436
2012-01-26

Tank container, tank body and processing method of tank body

#185
20110291407
2011-12-01

Joint for tubular materials

#186
20110271519
2011-11-10

Method for manufacturing a rotor for a generator

#187
20110244265
2011-10-06

Welding alignment and spacing article

#188
20110131775
2011-06-09

Device for preparing the end faces of thin-walled jackets for welding

#189
20110107574
2011-05-12

Pipe adjustment tool

#190
20110076113
2011-03-31

Method for producing a fastening device

#191
20110071620
2011-03-24

Methods for forming an orthogonal end on a helical stent

#192
20110071619
2011-03-24

Stent with constant stiffness along the length of the stent

#193
20110071618
2011-03-24

Helical stent with connections

#194
20110071617
2011-03-24

Stent With Improved Flexibility

#195
20110071615
2011-03-24

Methods for forming an orthogonal end on a helical stent

#196
20110067471
2011-03-24

Method and Apparatus for Creating Formed Elements Used to Make Wound Stents

#197
20110005631
2011-01-13

Method for airtightly joining reinforced platinum hollow tube with platinum flange

#198
20100326974
2010-12-30

Method for improving residual stress in tubular body

#199
20100285327
2010-11-11

Corrosion resistant fluid conducting parts, methods of making corrosion resistant fluid conducting parts and equipment and parts replacement methods utilizing corrosion resistant fluid conducting parts

#200
20100096046
2010-04-22

Method of improving formability of magnesium tubes

#201
20100095729
2010-04-22

Rounding system and method used in the manufacture of wind towers

#202
20100059491
2010-03-11

APPARATUS FOR IMPROVING RESIDUAL STRESS IN TUBULAR BODY

#203
20100050410
2010-03-04

Method of joining articles using adjustment features

#204
20100040408
2010-02-18

Connection between a tubular member of steel and a structure of aluminum

#205
20090230104
2009-09-17

Laser shock peening

#206
20090188206
2009-07-30

SYSTEM AND METHOD FOR JOINING DISSIMILAR MATERIALS

#207
20090004040
2009-01-01

Ferritic stainless steel sheet for raw material pipe for bellows pipe

#208
20080283581
2008-11-20

Apparatus and method for connecting copper tubes

#209
20080263848
2008-10-30

Coiled tubing with retainer for conduit

#210
20080257008
2008-10-23

High strength welded steel tube superior in hydrogen embrittlement cracking resistance of weld metal and method of production of same

#211
20080149688
2008-06-26

System and method for forming a continuous strip/plate from a plurality of strips/plates and for forming a pipe from the continuous strip/plate

#212
20080006610
2008-01-10

Method for airtightly joining reinforced platinum hollow tube with platinum flange

#213
20060231596
2006-10-19

Process for making a welded steel tubular having a weld zone free of untempered martensite

#214
20060027628
2006-02-09

Corrosion resistant fluid conducting parts, methods of making corrosion resistant fluid conducting parts and equipment and parts replacement methods utilizing corrosion resistant fluid conducting parts

#215
20050247380
2005-11-10

Heat transfer tube constructed of tin brass alloy

#216
18654487
2025-06-24

Heat pipe wick formation

#217
17216398
2024-06-11

Heat pipe wick formation

#218
15425446
2019-04-30

Fabricating conduits

#219
14103483
2018-11-06

Corrosion resistant bimetallic tube manufactured by a two-step process