Title:
ELECTROPHORETIC STEEL PIPE AND ITS ELECTROPHORETIC FINISHING METHOD AND THE WHOLE SET EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2008/144989
Kind Code:
A1
Abstract:
A steel pipe and its production method and equipment, in particularly, a electrophoretic
steel pipe and its electrophoretic finishing method and equipment includes
a steel pipe having electrophoretic coating on its inner wall and outer wall;
the method includes a cathode and an anode electrophoretic technique, in which,
when the cathode electrophoretic technique is used, an accessorial anode is
put in the deep hole of the steel pipe; when the anode electrophoretic technique
is used, an accessorial cathode is put in the deep hole of the steel pipe. The invention
solves the electrophoretic process problem on the inner wall and the outer wall
of the steel pipe, so the anticorrosion of the inner and outer wall of part is solved.
The invention can be used widely in chemical engineering, petroleum and natural
gas industry, and it has excellent anticorrosion function.
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Inventors:
LI ZAILIANG (CN)
Application Number:
PCT/CN2007/070945
Publication Date:
December 04, 2008
Filing Date:
October 24, 2007
Export Citation:
Assignee:
WUHAN LISHENG SUPER FILTRATION (CN)
LI ZAILIANG (CN)
LI ZAILIANG (CN)
International Classes:
C25D13/14
Foreign References:
| CN2061936U | 1990-09-12 | |||
| DE19641155A1 | 1998-04-16 | |||
| EP0432517A1 | 1991-06-19 | |||
| JPS6468491A | 1989-03-14 | |||
| CN101003908A | 2007-07-25 |
Other References:
MO J.: "Remark on the quality management of cathodic electrodeposition", MODERN COATING & FINISHING 2006, no. 6, May 2006 (2006-05-01), pages 25
Attorney, Agent or Firm:
WUHAN KAIYUAN PATENT AGENT LTD. (Jiefang Avenue, Wuhan Hubei 6, CN)
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