ClassID:

38195

B21C1/24 - CPC Classification

Classification description:

Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing; Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels

Sub-classes:
Recent Application in this class:
#1
20260124051
2026-05-07

PROCESS AND APPARATUS FOR PRODUCING A HOLLOW CYLINDER FOR A MEDICAL APPLICATION

#2
20260061470
2026-03-05

METHOD AND MECHANICAL ARRANGEMENT FOR PRODUCING A WALL PROFILE ON A PLASTICALLY DEFORMABLE HOLLOW BODY WALL

#3
20250065384
2025-02-27

DEVICES AND METHOD FOR SHAPING A TUBULAR HOLLOW ELEMENT

#4
20240261119
2024-08-08

Lumen Stent and Preform thereof, and Methods for Preparing the Lumen Stent and Preform thereof

#5
20230130543
2023-04-27

DRAWING MACHINE, DRAWING METHOD AND DRAWING MANDREL

#6
20220339012
2022-10-27

Lumen stent and preform thereof, and methods for preparing the lumen stent and preform thereof

#7
20210146418
2021-05-20

Tube structure and a method for manufacturing a tube structure

#8
20200290113
2020-09-17

Shaft for steering device, method of manufacturing shaft for steering device, and electric power steering device

#9
20200277002
2020-09-03

Manufacturing method for hollow rack bar and hollow rack bar manufacturing apparatus

#10
20200094773
2020-03-26

Tubular element for gas pressure vessel, gas pressure vessel and method of manufacturing a tubular element

#11
20200038927
2020-02-06

A MANDREL ADJUSTMENT ASSEMBLY FOR A MULTI-WALL PIPE PRODUCTION MADE OF COATED METAL SHEET

#12
20190274851
2019-09-12

Thin, narrow tube and drawing apparatus and drawing method for manufacturing the same

#13
20190255646
2019-08-22

Electric resistance welded steel pipe having identifiable seam portion and method for manufacturing the same

#14
20190201956
2019-07-04

Drawing machine for drawing tubes

#15
20190193131
2019-06-27

Method for forming a hollow of a ferritic FeCrAl alloy into a tube

#16
20190076902
2019-03-14

Method of manufacturing variable wall thickness steel pipe and variable wall thickness steel pipe

#17
20180229566
2018-08-16

Twist-axle with longitudinally-varying wall thickness

#18
20180147505
2018-05-31

Composite column for use in high pressure liquid chromatography

#19
20180036830
2018-02-08

Electric resistance welded steel pipe having identifiable seam portion and method for manufacturing the same

#20
20180021826
2018-01-25

Preparing a tube end for rod drawing

#21
20170361246
2017-12-21

Composite column for use in high pressure liquid chromatography

#22
20170320124
2017-11-09

Method for producing a rifled tube

#23
20170312101
2017-11-02

Lumen stent and preform thereof, and methods for preparing lumen stent and preform thereof

#24
20170173999
2017-06-22

Variable-wall light-weight axle shaft with an integral flange member and method for making the same

#25
20170128993
2017-05-11

Floating Draw Plug and Method of Drawing Tube

#26
20160279689
2016-09-29

Drawing machine for drawing tubes

#27
20160273683
2016-09-22

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

#28
20160146250
2016-05-26

Method for producing an internally structured slide bearing bushing

#29
20160084433
2016-03-24

Tubular structure support with variable dimensions and mechanical properties

#30
20160008862
2016-01-14

Method for manufacturing drive shaft

#31
20160001351
2016-01-07

HOLLOW DRIVE SHAFT WITH FLANGE AND METHOD FOR THE PRODUCTION THEREOF

#32
20150377315
2015-12-31

Cylinder Tube Closed At The End So As To Be Fluid-Tight And Method For Production Thereof

#33
20150297370
2015-10-22

Thin, narrow tube and drawing apparatus and drawing method for manufacturing the same

#34
20150285297
2015-10-08

Method for forming a variable wall light weight axle shaft with friction welded flange

#35
20150285296
2015-10-08

Variable-wall light-weight axle shaft with an integral flange member and method for making the same

#36
20150114073
2015-04-30

Tube expanding method for manufacturing metal tube

#37
20150082851
2015-03-26

Precursor detection method and precursor detection device of stick-slip phenomenon, and method for cold-drawing pipe or tube using precursor detection method

#38
20140190586
2014-07-10

Tubular support structure with variable wall thickness

#39
20130269406
2013-10-17

Linear drawing machine and method for linear drawing of a workpiece through a drawing ring

#40
20130264789
2013-10-10

Twist-axle with longitudinally-varying wall thickness

#41
20130126119
2013-05-23

Manufacturing method for a multi-channel copper tube, and manufacturing apparatus for the tube

#42
20130056114
2013-03-07

Twist-axle with longitudinally-varying wall thickness

#43
20120263967
2012-10-18

Methods for producing blank tube for cold drawing and for producing cold drawn tube

#44
20120198901
2012-08-09

APPARATUS AND METHOD FOR DRAWING METAL TUBE

#45
20120125070
2012-05-24

Method for producing a small thin-walled tube from a magnesium alloy

#46
20110296890
2011-12-08

Device for drawing tubular workpiece

#47
20110260423
2011-10-27

Twist-axle with longitudinally-varying wall thickness

#48
20110232352
2011-09-29

Method of producing ultrathin-wall seamless metal tube using floating plug

#49
20110048089
2011-03-03

Steel pipe drawing apparatus and drawn steel pipe manufacturing method

#50
20100319425
2010-12-23

Production method of internally ribbed steel tube and drawing plug for use therein

#51
20100193171
2010-08-05

Production method of internally ribbed steel tube

#52
20100170316
2010-07-08

Plug for cold drawing and method for manufacturing of metal pipe

#53
20100064750
2010-03-18

Linear drawing machine and method for linear drawing of a workpiece through a drawing ring

#54
20100021755
2010-01-28

Manufacturing method for a multi-channel copper tube, and manufacturing apparatus for the tube

#55
20090193868
2009-08-06

Method of producing ultra thin wall metallic tube by cold drawing process

#56
20090158799
2009-06-25

Metal Pipe and Manufacturing Method Thereof

#57
20090056405
2009-03-05

METHOD OF MACHINING METALLIC TUBES

#58
20090038360
2009-02-12

Method for producing ultra thin wall metallic tube with cold working process

#59
20090032151
2009-02-05

MAGNESIUM BASE ALLOY PIPES AND METHOD OF MANUFACTURING THE SAME

#60
20080148795
2008-06-26

Method for producing ultra thin wall metallic tube with cold working process

#61
20080115553
2008-05-22

Reducing tubes over a stepped mandrel to manufacture tubular shafts having an undercut in one operation

#62
20080007088
2008-01-10

Vehicle Frame Having Energy Management System And Method For Making Same

#63
20070227224
2007-10-04

Variable curvature tube and draw die therefor

#64
20070199720
2007-08-30

Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe

#65
20070175260
2007-08-02

Method for repairing metal pipe

#66
20070062241
2007-03-22

Unitary rear axle housing and method for manufacturing same

#67
20070039369
2007-02-22

Aluminum pipe having excellent surface quality, method and apparatus for manufacturing the aluminum pipe, and photosensitive drum base body

#68
20060201227
2006-09-14

Vehicle structural components made from tubular members and method therefor

#69
20060112751
2006-06-01

Method for manufacture of a metal shell, and a cup designed to serve as a blank

#70
20060112558
2006-06-01

Process of making variable wall thickness tubing

#71
20060076147
2006-04-13

Method of completing a well

#72
20050229667
2005-10-20

Apparatus and method for forming internally ribbed or rifled tubes

#73
20050208324
2005-09-22

Manesium base alloy tube and method for manufacture thereof

#74
20050145002
2005-07-07

Apparatus and method for the noncircular bending of tubes

#75
20050000261
2005-01-06

Variable curvature tube and draw die therefor