ClassID:

38334

B21C37/154 - CPC Classification

Classification description:

Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes; Making tubes of special shape; Making tube fittings Making multi-wall tubes

Recent Application in this class:
#1
20240399440
2024-12-05

METHOD FOR MANUFACTURING A DOUBLE-WALL HEAT-EXCHANGER TUBE

#2
20240288099
2024-08-29

A METHOD OF MANUFACTURING A DOUBLE-WALLED ELBOW PIPE SEGMENT, A PIPE ASSEMBLY

#3
20220266323
2022-08-25

Double walled tube segment and method for producing said tube segment

#4
20220040744
2022-02-10

Forming process using an outer sacrificial layer

#5
20220040474
2022-02-10

RING ELECTRODE FOR A MEDICAL DEVICE

#6
20210245307
2021-08-12

ASSEMBLY AND WELDING UNIT FOR MANUFACTURING PIPES

#7
20210215516
2021-07-15

Tube portion

#8
20210197242
2021-07-01

Tubular element and assemblies

#9
20210146418
2021-05-20

Tube structure and a method for manufacturing a tube structure

#10
20210010619
2021-01-14

Long tubular pipe comprising a separating member and methods for mounting and bending such a pipe

#11
20200384518
2020-12-10

MANUFACTURING DEVICE AND METHOD FOR BIMETAL COMPOSITE HOLLOW BILLET

#12
20200370681
2020-11-26

Conduits for transporting fluids and methods of fabricating the same

#13
20200309310
2020-10-01

Method for producing a double-walled pipe and a double-walled pipe

#14
20200276627
2020-09-03

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

#15
20200263812
2020-08-20

HELICALLY WOUND TUBULAR STRUCTURES

#16
20200130035
2020-04-30

METHOD FOR PRODUCING A HIGH-PRESSURE PIPE

#17
20200025339
2020-01-23

Sensor for a high-pressure line, and method for producing same

#18
20190314877
2019-10-17

Connection tube and its method of manufacturing

#19
20190291155
2019-09-26

Tubular element to transfer abrasive materials, in particular concrete, and method to make it

#20
20190168274
2019-06-06

Bimetallic tube and method for manufacturing a bimetallic tube

#21
20190061044
2019-02-28

METHOD FOR MANUFACTURING DOUBLE PIPE

#22
20190032819
2019-01-31

Pipe body, pipe and method of making pipe

#23
20180356009
2018-12-13

Method for manufacturing a tube of metal as well as a tube of metal

#24
20180354063
2018-12-13

Ultrasonic welding of annular components

#25
20180320979
2018-11-08

REFRIGERANT TO WATER HEAT EXCHANGER

#26
20180313490
2018-11-01

Method for producing a double-walled pipe and a double-walled pipe

#27
20180313471
2018-11-01

COMPOSITE PIPE COMPRISED OF A CARRIER PIPE AND AT LEAST ONE PROTECTIVE PIPE, AND METHOD FOR THE PRODUCTION THEREOF

#28
20180112936
2018-04-26

System and method for additively manufacturing boiler tubes

#29
20180072513
2018-03-15

Pipe for conveying abrasive materials such as concrete, apparatus and method for producing said pipe

#30
20180050382
2018-02-22

Method and coating device for applying a cladding layer during the production of a multilayer heavy-duty pipe

#31
20170341119
2017-11-30

Improving the bending behaviour of mechanically-lined rigid pipe

#32
20170113257
2017-04-27

METHOD FOR PRODUCING A LARGE MULTILAYER PIPE

#33
20170095854
2017-04-06

Molding apparatus, method for replacing components of molding apparatus, and replacement unit for molding apparatus

#34
20160289812
2016-10-06

Process for manufacturing high-nitrogen stainless steel pipe with high strength, high ductility, and excellent corrosion and heat resistance

#35
20160273683
2016-09-22

Process for producing a multilayer pipe having a metallurgical bond by drawing, and multilayer pipe produced by this process

#36
20160207086
2016-07-21

Process for producing a multilayer pipe by expansion and multilayer pipe produced by said process

#37
20160131282
2016-05-12

Multi-walled pipe and manufacture thereof

#38
20160082492
2016-03-24

Method for producing a multi-layer large pipe

#39
20150273548
2015-10-01

Method of manufacturing rectangular tube having stepped portion

#40
20150240970
2015-08-27

Friction stir welded pipes

#41
20150114064
2015-04-30

Water pipe for which hydroforming is employed, and a production method therefor

#42
20140318752
2014-10-30

Refrigerant to water heat exchanger

#43
20140230248
2014-08-21

Method of making lightweight heat pipe

#44
20140150263
2014-06-05

Manufacturing method of thin heat pipe

#45
20130282104
2013-10-24

Implant and method for producing the same

#46
20130205861
2013-08-15

Method for producing double-wall tube with braided wires at its interface

#47
20130195557
2013-08-01

Method of manufacturing a mechanically lined pipe

#48
20130153076
2013-06-20

Durable semi-rigid single-layer flexible duct

#49
20130070889
2013-03-21

Double-walled tube with interface gap and production method therefor

#50
20130048248
2013-02-28

HEAT PIPE MANUFACTURING METHOD AND HEAT PIPE THEREOF

#51
20130048247
2013-02-28

HEAT PIPE MANUFACTURING METHOD AND HEAT PIPE THEREOF

#52
20130043004
2013-02-21

LIGHTWEIGHT HEAT PIPE AND METHOD OF MAKING THE SAME

#53
20130008083
2013-01-10

TOMATO CAGE FORMED OF HOLLOW WIRE

#54
20130004883
2013-01-03

High-nitrogen stainless-steel pipe with high strength high ductility, and excellent corrosion and heat resistance

#55
20120273604
2012-11-01

Spring tube winding machine

#56
20120216395
2012-08-30

APPARATUS FOR MANUFACTURING A MULTILAYER TUBE FOR THE HYDRAULIC CONNECTION AND WIRING OF SOLAR PANELS

#57
20120204992
2012-08-16

Water pipe for which hydroforming is employed, and a production method therefor

#58
20120180541
2012-07-19

Method and device for manufacturing bimetallic pipes

#59
20120160360
2012-06-28

Flexible fluid conduit

#60
20120073348
2012-03-29

METHOD FOR PRODUCING SEALING ELEMENTS

#61
20110268566
2011-11-03

METHOD FOR THE MANUFACTURE OF A CIRCULAR REVOLUTION THERMOMECHANICAL PART INCLUDING A TITANIUM-BASED LOAD-BEARING SUBSTRATE LINED WITH STEEL OR SUPERALLOY, A TURBOMACHINE COMPRESSOR HOUSING WHICH IS RESISTANT TO TITANIUM FIRE OBTAINED USING THIS METHOD

#62
20110220237
2011-09-15

BIMETALLIC TUBE

#63
20110146366
2011-06-23

PRODUCTION-OPTIMIZED PROCESS FOR PRODUCING A MULTILAYER PIPE

#64
20110041946
2011-02-24

Method for the production of a high-pressure accumulator pipe of steel for fuel injection systems and high-pressure accumulator pipe produced according to this method

#65
20110031296
2011-02-10

Method of producing tubes and a rolling mill train for producing tubes

#66
20110017807
2011-01-27

METHOD FOR ROLLED SEAMLESS CLAD PIPES

#67
20110017339
2011-01-27

METHOD FOR ROLLED SEAMLESS CLAD PIPES

#68
20110017338
2011-01-27

Aluminum foil based hose

#69
20110011144
2011-01-20

Method and device for manufacturing bimetallic pipes

#70
20100229996
2010-09-16

METHOD AND APPARATUS FOR FORMING A LINED CONDUIT

#71
20100139801
2010-06-10

Durable semi-rigid flexible duct

#72
20100089517
2010-04-15

Equipment and method for manufacturing steel-plastic composite pipe

#73
20100065141
2010-03-18

Tubing and method for manufacture

#74
20100012217
2010-01-21

Embedded metallic tubes with compression fit and method for manufacturing the same

#75
20090304967
2009-12-10

Making an elongated product

#76
20080030023
2008-02-07

Compound tube and method of producing the same

#77
20080005887
2008-01-10

Elongated member/radially expandable member assembly and methods of assembling the same

#78
20070132228
2007-06-14

Production of clad pipes

#79
20070082215
2007-04-12

Double walled metal tube, metal band and strip, and method of coating a metal strip

#80
20070022800
2007-02-01

Method for forming a lined conduit

#81
20060230617
2006-10-19

Fabricated, brazed metal heat exchanger tube manufacture

#82
20060208031
2006-09-21

Concentric, insulated tubular conduits and method for assembly

#83
20060191311
2006-08-31

Flexible pipe and method of manufacturing same

#84
20060037660
2006-02-23

Hydrogen conduit and process for producing same

#85
20050251987
2005-11-17

Method for producing bimetallic line pipe

#86
20050166987
2005-08-04

Clad pipe

#87
20050155785
2005-07-21

Method of producing a sheath for a multifilament superconducting cable and sheath thus produced

#88
20050089707
2005-04-28

Shaped contoured crushable structural members and methods for making the same

#89
20050058851
2005-03-17

Composite tube for ethylene pyrolysis furnace and methods of manufacture and joining same

#90
20050034306
2005-02-17

Method for producing a sectionally-reinforced tubular member of metal, in particular for supporting structures in motor vehicles

#91
20050019597
2005-01-27

Coated contoured crushable structural members and methods for making the same

#92
20050006900
2005-01-13

System and method for coupling conduit

#93
20050006899
2005-01-13

Weldable conduit and method

#94
20050005983
2005-01-13

Weldable conduit method of forming

#95
20050005449
2005-01-13

Method for manufacturing articless of jewellery