Title:
A THIN WALL STAINLESS-STEEL PIPE WITH THREAD ENDS AND THE METHOD OF MAKING THE SAME
Document Type and Number:
WIPO Patent Application WO/2005/085695
Kind Code:
A1
Abstract:
The invention relates to a thin wall stainless-steel pipe with threads ends, the thread ends are formed by a rolling wheel which engages into the pipe, the pipe wall are caused plastic deformation by thread of a die, the thread on the both pipe ends can screw with the thread on the other pipe ends, characterizing is that the pipe wall thick at threaded groove plus the high of thread is larger than the pipe wall thick of the pipe body. The invention also relates to a making method of the pipe.
Inventors:
CHENG JINXU (CN)
Application Number:
PCT/CN2005/000233
Publication Date:
September 15, 2005
Filing Date:
February 25, 2005
Export Citation:
Assignee:
CHENG YUMING (CN)
CHENG JINXU (CN)
CHENG JINXU (CN)
International Classes:
B21H3/00; B23G7/00; F16L9/02; F16L15/00; (IPC1-7): F16L15/00; B21H3/00; B23G7/00
Foreign References:
| CN2481432Y | 2002-03-13 | |||
| JP2002130554A | 2002-05-09 | |||
| CN1453493A | 2003-11-05 | |||
| CN2189255Y | 1995-02-08 |
Attorney, Agent or Firm:
GUANGZHOU SINO PATENT & TRADEMARK AGENCY CO., LTD. (No. 87 Cangbian Road, Guangdong 0, CN)
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