ClassID:

38428

B21D3/04 - CPC Classification

Classification description:

Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers arranged on axes skew to the path of the work

Sub-classes:
Recent Application in this class:
#1
20210016336
2021-01-21

Transport system for a wire or a sheet and method for delivering a wire or a sheet

#2
20200206801
2020-07-02

System for cleaning, protecting and lubricating hyperbolic rollers and bearings placed in a rotating rotor which is used for straightening wire, rod or reinforcing bar, using air and oil

#3
20180299121
2018-10-18

Method for producing a heat transfer tube for steam generator using drawing, solution heat treatment, and straightening

#4
20180029093
2018-02-01

Roll straightening machine and method for producing an elongated string member

#5
20150107724
2015-04-23

Dual phase stainless steel pipe and manufacturing method thereof

#6
20140150512
2014-06-05

Pipe straightening apparatus and a method of straightening a pipe

#7
20120304724
2012-12-06

Method for straightening tube and straightening roll

#8
20100193171
2010-08-05

Production method of internally ribbed steel tube

#9
20100005848
2010-01-14

Method for producing duplex stainless steel pipe, method for straightening, method for regulating strength, and method for operating straightener

#10
20090064752
2009-03-12

Process for straightening a tube

#11
20080184766
2008-08-07

Straightening rotor, rotor straightener and straightening method

#12
20070227219
2007-10-04

Straightener

#13
20070039369
2007-02-22

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

#14
20060174669
2006-08-10

Apparatus for rectifying round pipe and tubing

#15
20050191509
2005-09-01

Cold finished seamless steel tubes