ClassID:

37828

B21B25/02 - CPC Classification

Classification description:

Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group ; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs Guides, supports, or abutments for mandrels, e.g. carriages or steadiers ; Adjusting devices for mandrels

Recent Application in this class:
#1
20230201900
2023-06-29

Device and method for handling mandrel rods in a tube rolling mill

#2
20220219213
2022-07-14

Guide device for guiding a driving bar of a mandrel or for guiding a mandrel in a rolling process of tubular bodies

#3
20200009625
2020-01-09

Rolling mill for rolling concave, rod-shaped bodies

#4
20190160501
2019-05-30

Cold pilger rolling mill and method for producing a pipe

#5
20180281037
2018-10-04

Plug and Method of Manufacturing the Same

#6
20170173650
2017-06-22

COMBINED APPARATUS FOR ROLLING SEAMLESS TUBES

#7
20160059284
2016-03-03

Mandrel conveying device for a tube rolling mill

#8
20150306646
2015-10-29

Manufacturing method and manufacturing apparatus of seamless metal pipe

#9
20150298185
2015-10-22

Method and device for producing seamless steel pipes having low eccentricity

#10
20150283592
2015-10-08

Multi-roll table ring-rolling mill as well as method for rolling rings in a multi-roll table ring-rolling mill

#11
20150121982
2015-05-07

Manufacturing method of seamless metal pipe, mandrel mill, and auxiliary tool

#12
20150082846
2015-03-26

Apparatus for forging a hollow body from a pre-perforated hollow block

#13
20130205851
2013-08-15

Method and apparatus for making cold-pilger-rolled tubes

#14
20130061646
2013-03-14

Process for rolling tubes in a continuous multi-stand rolling mill

#15
20130008219
2013-01-10

Mandrel conveying device for a tube rolling mill

#16
20120312062
2012-12-13

Device and method for rolling of pipe blanks

#17
20120103049
2012-05-03

Rolling process and relating longitudinal, multi-stand rolling mill of continuous, restrained type for hollow bodies

#18
20110277526
2011-11-17

Mandrel holder head with release device

#19
20100212387
2010-08-26

Method of and rolling mill for making seamless steel pipe

#20
20100107713
2010-05-06

METHOD AND DEVICE FOR ROLLING A ROLLING STOCK IN A ROLLING MILL WITH A CROSS-ROLLING MILL