EP 1375019 B1 20051214 - THICK-WALLED SMALL DIAMETER PIPE PRODUCING METHOD
Title (en)
THICK-WALLED SMALL DIAMETER PIPE PRODUCING METHOD
Title (de)
HERSTELLUNGSVERFAHREN FÜR DICKWANDIGE ROHRE MIT KLEINEM DURCHMESSER
Title (fr)
PROCEDE DE FABRICATION DE TUYAU DE FAIBLE DIAMETRE A PAROI EPAISSE
Publication
Application
Priority
- JP 0202349 W 20020313
- JP 2001080073 A 20010321
Abstract (en)
[origin: EP1375019A1] A method of efficiently producing a thick-walled small diameter pipe having a smooth flawless inner peripheral surface, which can be suitably used for a fuel injection pipe for diesel engines, is provided. In producing a thick-walled small diameter pipe by applying a plurality of times of stretching to a seamless raw pipe, the method comprises the steps of cutting the work pipe into lengths for which the product size is taken into consideration, prior to the final stretching, applying cutting or grinding to the inner peripheral surface of such length, and effecting the final stretching by forging utilizing a pressing force provided by a press. <IMAGE>
IPC 1-7
IPC 8 full level
B23D 21/00 (2006.01); B21C 1/22 (2006.01); B21C 1/24 (2006.01); B21C 1/26 (2006.01); B21C 37/06 (2006.01); B21C 37/30 (2006.01); B24C 3/32 (2006.01); F02M 55/02 (2006.01)
CPC (source: EP)
B21C 1/24 (2013.01); B21C 1/26 (2013.01); B21C 37/06 (2013.01); B21C 37/30 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1375019 A1 20040102; EP 1375019 A4 20040602; EP 1375019 B1 20051214; DE 60208011 D1 20060119; DE 60208011 T2 20060713; JP 2002273512 A 20020925; JP 3920581 B2 20070530; WO 02074462 A1 20020926
DOCDB simple family (application)
EP 02705123 A 20020313; DE 60208011 T 20020313; JP 0202349 W 20020313; JP 2001080073 A 20010321