B21B17/08 - CPC Classification Index

ClassID:

37803 ⎘

B21B17/08 - CPC Classification

Classification description:

Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions, i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills

Sub-classes:

B21B17/10 » in a continuous process 2
B21B17/12 » in a discontinuous process, {e.g. plug-rolling mills} 0

Recent Application in this class:

20200109460

2020-04-09

Apparatus line for manufacturing seamless steel pipe and tube and method of manufacturing duplex seamless stainless steel pipe

20170335422

2017-11-23

Apparatus line for manufacturing seamless steel pipe and tube and method of manufacturing duplex seamless stainless steel pipe

20170333963

2017-11-23

Method of manufacturing piston of pump for brake system and pump for brake system including the piston

20160265076

2016-09-15

Equipment line for manufacturing seamless steel tube or pipe and method of manufacturing high-strength stainless steel seamless tube or pipe for oil wells using the equipment line

20150273548

2015-10-01

Method of manufacturing rectangular tube having stepped portion

20120285215

2012-11-15

Device and method to shape worked pieces