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Patent Searching and Data


Title:
PRODUCTION OF PIPE
Document Type and Number:
Japanese Patent JPH071037
Kind Code:
A
Abstract:

PURPOSE: To manufacture a pipe with an excellent chemical resistance by forming an anodically oxidized film on a bar-like surface, forming the main body material of the pipe whose surface of the anodically oxidized film, is covered, and removing this bar-like part which is not anodized.

CONSTITUTION: A first intermediate body 3 manufactured by forming the anodically oxidized film 2 of oxidized aluminum on the surface of a bar-like body 1a made of aluminum, is formed. A second intermediate body is formed by covering the surface of this anodically oxidized film 2 by an epoxy resin. Next, the bar-like body 1a made of aluminum, is removed by immersing it in diluted hydrochloric acid. A hydrochloric acid component on a two-layer structure body manufactured by covering the surface of the anodically oxidized film 2 by an epoxy resin of a main body material 4, is removed in running water, and the pipe 6 of the epoxy resin, whose sectional shape is like a doughnut, is formed. Consequently, the manufacture of the excellent pipe with a good chemical resistance, which is suitable for the transportation of corrosive fluid, is realized.


Inventors:
OSHIO SHOZO
MATSUOKA TOMIZO
Application Number:
JP14922793A
Publication Date:
January 06, 1995
Filing Date:
June 21, 1993
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
B21C37/06; F16L9/02; (IPC1-7): B21C37/06; F16L9/02
Attorney, Agent or Firm:
Awano Shigetaka