Global Patent Index - EP 1018378 A1

EP 1018378 A1 2000-07-12 - PIPE AND MOLDING EQUIPMENT ARRAY AND PIPE MOLDING METHOD

Title (en)

PIPE AND MOLDING EQUIPMENT ARRAY AND PIPE MOLDING METHOD

Title (de)

VERFAHREN UND VORRICHTUNG ZUM GIESSEN VON ROHREN

Title (fr)

PROCEDE ET STRUCTURE DE MOULAGE DE TUYAUX

Publication

EP 1018378 A1 (EN)

Application

EP 98950499 A

Priority

  • JP 9804962 W
  • JP 10789798 A
  • JP 21432098 A

Abstract (en)

A pipe forming line that has breakdown and cluster forming sections and have rolls having flexible forming capability and compatibility with steel pipes of various sizes and is capable of conducting forming by continuous roll forming is provided together with a pipe production method. A pipe forming line comprising breakdown stands, cluster stands or cage roll stands, and fin-pass stands and a pipe forming method, the pipe forming line being characterized in that, in order to bend-form to a substantially semicircular shape or a substantially final product shape by upper and lower rolls of at least multiple stages of the break down stands, it uses as the roll caliber a curve whose curvature varies continuously or stepwise, and is directly installed with a fin-pass mill without installation of cage rolls. <IMAGE>

IPC 1-7 (main, further and additional classification)

B21C 37/08; B21C 37/083

IPC 8 full level (invention and additional information)

B21C 37/08 (2006.01); B21C 37/083 (2006.01); B21D 5/12 (2006.01)

CPC (invention and additional information)

B21C 37/083 (2013.01); B21C 37/08 (2013.01)

Designated contracting state (EPC)

AT DE DK FI FR GB IT SE

EPO simple patent family

EP 1018378 A1 20000712; EP 1018378 A4 20040623; CA 2276771 A1 19991017; JP 2000000616 A 20000107; WO 9954068 A1 19991028

INPADOC legal status


2007-07-11 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Effective date: 20070529

2004-06-23 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20040511

2004-06-23 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- IPC: 7B 21C 37/08 A

2004-06-23 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- IPC: 7B 21C 37/083 B

2000-07-12 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19990806

2000-07-12 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT DE DK FI FR GB IT SE