B21C37/15 - CPC Classification Index

ClassID:

38330 ⎘

B21C37/15 - 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

Sub-classes:

B21C37/151 » {Making tubes with multiple passages} 66
B21C37/152 » {Making rifle and gunbarrels} 7
B21C37/154 » {Making multi-wall tubes} 93
B21C37/155 » tubes with non circular section {Making} 58
B21C37/156 » {Making tubes with wall irregularities } 11
B21C37/16 » Making tubes with varying diameter in longitudinal direction 83
B21C37/20 » Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies; {Making tubes with angled walls, ribbed tubes and tubes with decorated walls} 17
B21C37/22 » Making finned or ribbed tubes by fixing strip or like material to tubes 19
B21C37/28 » Making tube fittings for connecting pipes, e.g. U-pieces 19

Recent Application in this class:

20260146310

2026-05-28

HOT-ROLLED STEEL SHEET, ELECTRIC RESISTANCE WELDED STEEL PIPE AND RECTANGULAR STEEL PIPE, AND LINE PIPE AND BUILDING STRUCTURE

20220193742

2022-06-23

Blank and component

20210187574

2021-06-24

Device for manufacturing bent pipe and method for manufacturing bent pipe

20210002749

2021-01-07

Pipe element for gas pressure vessel, and gas pressure vessel

20200361498

2020-11-19

Tube segment and tube for evacuated tube transport system

20200200319

2020-06-25

CONDUITS FOR TRANSPORTING FLUIDS AND METHODS OF FABRICATING THE SAME

20190126714

2019-05-02

Automotive component manufacturing method and automotive component

20190039108

2019-02-07

Apparatus that manufactures closed-structure part

20170320116

2017-11-09

Method of manufacturing flaring-processed metal pipe

#10

20170274434

2017-09-28

Method of producing shaped article, tooling, and tubular shaped article

#11

20160090136

2016-03-31

Method of manufacturing support structure for a pickup truck bed

#12

20160074917

2016-03-17

HOLLOW THREADED EXTRUSION SEGMENTS

#13

20150375794

2015-12-31

Gap joint for closed section load transfer

#14

20150151344

2015-06-04

Method for manufacturing curved hollow pipe

#15

20150101388

2015-04-16

Method of manufacturing closed-structure part and apparatus for the same

#16

20140158066

2014-06-12

METHOD FOR PROVIDING A THREADED FITTING IN A WATER TANK HEADER, HEADER PRODUCED BY THE METHOD AND WATER TANK INCLUDING THE HEADER

#17

20140047696

2014-02-20

Tower production method

#18

20120273556

2012-11-01

TOWER PRODUCTION METHOD

#19

20120244372

2012-09-27

Method for producing hot rolled hollow sections having a rectangular cross-section and small edge radii

#20

20120138185

2012-06-07

Method for producing a tube with a bent progression as a transverse progression

#21

20120097038

2012-04-26

Separator helix

#22

20120000565

2012-01-05

Barrel Form and Manufacturing Process for Same

#23

20110198873

2011-08-18

Energy absorber for a bumper assembly of a vehicle and method for the manufacture thereof

#24

20110162431

2011-07-07

Partially reinforced hollow profile

#25

20100287755

2010-11-18

Method for manufacturing a bendable tube

#26

20100209168

2010-08-19

Transport roller, transport unit, and printing apparatus

#27

20090021069

2009-01-22

Head rest carrying element

#28

20080311422

2008-12-18

Method for producing a heavy duty composite part

#29

20080134744

2008-06-12

METHOD AND PREPROCESSED TUBE FOR PRODUCING A TUBE WITH A BENT PROGRESSION OR A BEND EMBODIED AS A TRAVERSE PROGRESSION

#30

20080035628

2008-02-14

Production of Ihpf Components Having a Flange

#31

20080028609

2008-02-07

Hollow member, manufacturing method thereof, fluid distribution system using the hollow member, and forming apparatus of hollow material

#32

20080022526

2008-01-31

Undulating Pipe Manufacture

#33

20070261454

2007-11-15

Method for Producing a Double-Chamber Hollow Profile

#34

20070235163

2007-10-11

Indented tube for a heat exchanger

#35

20070144394

2007-06-28

Partitioning method for pipe material, pipe material manufactured by the method, and gas generator

#36

20060197919

2006-09-07

Manufacturing method for cooling unit having a pair of tabular members, cooling unit, optical device, and projector

#37

20060076147

2006-04-13

Method of completing a well

#38

20050244666

2005-11-03

Tubular blank

#39

20050089707

2005-04-28

Shaped contoured crushable structural members and methods for making the same

#40

20050019597

2005-01-27

Coated contoured crushable structural members and methods for making the same

#41

20050014015

2005-01-20

Sheet-metal elements made of flexibly rolled material strip