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Title:
METALLIC TUBULAR MEMBER AND METHOD FOR MANUFACTURING METALLIC TUBULAR MEMBER
Document Type and Number:
Japanese Patent JP2003136142
Kind Code:
A
Abstract:

To provide a metallic tubular member of small-diameter and having a smooth inner surface and a method for manufacturing the same.

There is provided a method for manufacturing a metallic tubular member characterized in that a maximum height difference (Rf) at a surface roughness of an inner surface is less than 3 μm and its inner diameter is less than 1.0 mm and a metallic thin plate 4 having the tubular member developed in its shape is press worked to make a tubular member. Accordingly, irrespective of a small diameter of a metallic tubular member, the inner surface of the tubular member is kept at a smooth state, a resistance is low when the fluid flows in the tubular member, and either a stain or a foreign material is hardly adhered to the member. Due to this fact, the tubular member is preferentially machined into a small-diameter tubular member such as a stinge needle, for example, and preferably used.


Inventors:
Ooyanai, Tetsuya
Okano, Masayuki
Application Number:
JP2001000334143
Publication Date:
May 14, 2003
Filing Date:
October 31, 2001
Export Citation:
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Assignee:
TERUMO CORP
OKANO KOGYO KK
International Classes:
F16L9/02; B21C37/06; B21C37/08; B21C37/083; B21D5/01; B21D51/18; B21G1/08; (IPC1-7): B21D5/01; B21C37/08; B21D51/18; F16L9/02