Title:
EQUIPMENT AND METHOD FOR MANUFACTURING STEEL-PLASTIC COMPOSITE PIPE
Document Type and Number:
WIPO Patent Application WO/2009/018721
Kind Code:
A1
Abstract:
Method and equipment for manufacturing steel-plastic composite pipe involve
the steel-plastic composite pipe is heated using steam as heating medium. Said
equipment involves multifunctional composite workroom, multifunctional
pipe transfer car (39), steam circulating device and refrigerant forming device
(11,12,17,22,23,42), also involves control device and circulating device
which can provide reusable steam continuously. The steam circulating device
comprises double heating furnace and adding steam device. This method has lower
production cost and fewer labor intensity.
Inventors:
ZHANG MINGWEI (CN)
Application Number:
PCT/CN2008/001438
Publication Date:
February 12, 2009
Filing Date:
August 07, 2008
Export Citation:
Assignee:
ZHANG MINGWEI (CN)
International Classes:
F16L9/147; B21C37/06; B29C65/10
Domestic Patent References:
| WO2004011231A1 | 2004-02-05 |
Foreign References:
| CN1435312A | 2003-08-13 | |||
| CN86105672A | 1988-04-20 | |||
| CN1663778A | 2005-09-07 | |||
| EP0531790A2 | 1993-03-17 | |||
| CN1134528A | 1996-10-30 | |||
| JP2001219463A | 2001-08-14 |
Other References:
See also references of EP 2116751A4
Attorney, Agent or Firm:
BEIJING HUAJIN PATENT AGENCY (Suite 2312 The Spaces International Center,No.8 Dongdaqiao Roa, Chaoyang District Beijing 0, CN)
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