Title:
CLAD WELDED PIPE AND METHOD OF MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2018/047723
Kind Code:
A1
Abstract:
The present invention provides a clad welded pipe with which the mechanical properties of the pipe itself are improved by reducing the width of a welded portion, and the function of which as a clad pipe is not compromised. The present invention provides a clad welded pipe including a first layer comprising a base material, and a second layer which is laminated onto one surface of the first layer and comprises a first cladding material of a material different from the base material, characterized in that a length L1, in the circumferential direction of the pipe, of the welded metal in a welded portion on an inner surface of the pipe, and a length L2, in the circumferential direction of the pipe, of the welded metal in the welded portion on an outer surface of the pipe are both at least equal to 0.0010 mm and at most equal to 1.0 mm, and in the welded portion, the base material is not exposed at the surface on the first cladding material side of the clad welded pipe.
Inventors:
OKABE TAKATOSHI (JP)
MATSUMOTO ATSUSHI (JP)
IDE SHINSUKE (JP)
MATSUMOTO AKIHIDE (JP)
MATSUMOTO ATSUSHI (JP)
IDE SHINSUKE (JP)
MATSUMOTO AKIHIDE (JP)
Application Number:
PCT/JP2017/031490
Publication Date:
March 15, 2018
Filing Date:
August 31, 2017
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B21C37/08; B23K13/00; B23K13/06; C21D9/08; C21D9/50; C22C38/00; C22C38/06; C22C38/38
Domestic Patent References:
| WO2016143271A1 | 2016-09-15 |
Foreign References:
| JPS61172684A | 1986-08-04 | |||
| JPS6380993A | 1988-04-11 | |||
| JPS60221173A | 1985-11-05 | |||
| JPS62156087A | 1987-07-11 | |||
| JPH05154545A | 1993-06-22 |
Other References:
See also references of EP 3511082A4
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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