B21B25/00 - CPC Classification Index

ClassID:

37827 ⎘

B21B25/00 - 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

Sub-classes:

B21B25/02 » Guides, supports, or abutments for mandrels, e.g. carriages {or steadiers} ; Adjusting devices for mandrels 20
B21B25/04 » Cooling or lubricating mandrels during operation 23
B21B25/06 » Interchanging mandrels, {fixing plugs on mandrel rods or cooling during interchanging mandrels } 9

Recent Application in this class:

20240009722

2024-01-11

HIGH-TEMPERATURE FORMING TOOL

20220040745

2022-02-10

Method for preparing multilayer metal composite pipe

20210101194

2021-04-08

PIERCER PLUG

20200276625

2020-09-03

Piercing machine, and method for producing seamless metal pipe using the same

20200156127

2020-05-21

Continuous tube rolling method and mandrel assembly for the implementation thereof

20190151917

2019-05-23

Method of manufacturing piercer plug

20180354008

2018-12-13

Piercer plug and method of manufacturing the same

20180154410

2018-06-07

Method for producing seamless metal tube

20180023179

2018-01-25

Method for Producing Plug

#10

20170333964

2017-11-23

HOT FORMING TOOL

#11

20170298997

2017-10-19

Method of producing a sliding sleeve for a synchronous manual transmission assembly and sliding sleeve produced by means of the method

#12

20170008066

2017-01-12

Ring rolling device

#13

20160346820

2016-12-01

Piercing mandrel having an improved service life for producing seamless tubes

#14

20160325325

2016-11-10

Rolling rod as an inner tool in the production of seamless metal hollow bodies and method for producing a metal hollow body

#15

20160256909

2016-09-08

Mandrel

#16

20160053358

2016-02-25

Piercing plug and manufacturing method of piercing plug

#17

20150321233

2015-11-12

Piercing plug

#18

20150314346

2015-11-05

Inner surface regulation tool, plug, mandrel, hot rolling mill, press piercing machine, and drawing machine

#19

20150306646

2015-10-29

Manufacturing method and manufacturing apparatus of seamless metal pipe

#20

20150298185

2015-10-22

Method and device for producing seamless steel pipes having low eccentricity

#21

20150258591

2015-09-17

Plug for hot tube-making

#22

20150239025

2015-08-27

Cladding tube for nuclear fuel rod, method and apparatus for manufacturing a cladding

#23

20150217349

2015-08-06

Plug for rolling of seamless steel pipe, method for manufacturing the same and method for manufacturing seamless steel pipe using the same

#24

20150196942

2015-07-16

Deoxidation of cross-rolled hollow blocks

#25

20150183010

2015-07-02

Plug for hot pipe making

#26

20150176107

2015-06-25

Tool for piercing mill

#27

20150140208

2015-05-21

Method for regenerating a plug for use in a piercing machine

#28

20150135513

2015-05-21

Method for producing plug for piercing-rolling

#29

20150132501

2015-05-14

METHOD OF PRODUCING PLUG FOR PIERCING-ROLLING

#30

20150125630

2015-05-07

METHOD FOR PRODUCING A PLUG FOR HOT TUBE-MAKING

#31

20150075243

2015-03-19

Plug used in piercing machine

#32

20150075241

2015-03-19

Equipment system for producing piercing-rolling plug

#33

20140260494

2014-09-18

Piercing apparatus, plug used for piercing apparatus, and method for producing seamless steel pipe

#34

20140223984

2014-08-14

Rolling mill and rolling method

#35

20130327107

2013-12-12

HOT WORK TOOL AND METHOD FOR PRODUCING SAME

#36

20130255342

2013-10-03

Method for producing seamless tube/pipe

#37

20130091916

2013-04-18

Method for producing seamless pipes

#38

20120312062

2012-12-13

Device and method for rolling of pipe blanks

#39

20120272704

2012-11-01

Method and device for the optimized circulation of rods in the production of a seamlessly hot-fabricated steel pipe according to the continuous pipe method

#40

20120210761

2012-08-23

Plug, piercing-rolling mill, and method of producing seamless tube by using the same

#41

20120137745

2012-06-07

Tube rolling plant

#42

20120103049

2012-05-03

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

#43

20110222643

2011-09-15

CLADDING TUBE FOR NUCLEAR FUEL ROD, METHOD AND APPARATUS FOR MANUFACTURING A CLADDING TUBE

#44

20110154876

2011-06-30

Rolling mill of rotating expander type for tubular bodies with tip-stabilizing system

#45

20110023569

2011-02-03

Method for Producing Seamless Pipe

#46

20100269868

2010-10-28

MANDREL BAR CLEANING FACILITY

#47

20100139352

2010-06-10

Method for Cr-plating of mandrel bars, the mandrel bar, and process for producing seamless tubes using the method and the mandrel bar

#48

20100107713

2010-05-06

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

#49

20100050723

2010-03-04

Piercing and rolling plug, method of regenerating such piercing and rolling plug, and equipment line for regenerating such piercing and rolling plug

#50

20100018281

2010-01-28

Method of manufacturing plug used to pierce and roll metal material, method of manufacturing metal pipe and plug used to pierce and roll metal material

#51

20090301155

2009-12-10

Method of manufacturing seamless pipes

#52

20090071221

2009-03-19

Mandrel bar for high-alloy rolling, method for surface treating a mandrel bar, method for producing mandrel bar, and method for operating seamless pipe mill

#53