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Title:
METAL PIPE CONNECTING STRUCTURE HAVING HIGH-STRENGTH ANTI-CORROSION COATING
Document Type and Number:
WIPO Patent Application WO/2019/080896
Kind Code:
A1
Abstract:
A metal pipe connecting structure having a high-strength anti-corrosion coating, comprising: a snap ring type pipe fitting (1), wherein a sealing groove (2) and a snap ring groove (3) are disposed on an inner circumferential surface of a socket end thereof; a sealing ring (4), disposed in the sealing groove (2); and a metal snap ring (6), which has a notched annular shape, is disposed in the snap ring groove (3) and facilitates deformation, wherein the snap ring type pipe fitting (1) is formed by a metal pipe fitting base body (101) and a high-strength anti-corrosion coating (102) that covers the inner wall of the pipe fitting base body. When a metal pipe (7) is inserted into a socket of the snap ring type pipe fitting (1), the sealing groove (2) and the snap ring groove (3) of the snap ring type pipe fitting (1) are compressed using a crimping tool so that the sealing groove (2) and the snap ring groove (3) deform, thereby achieving a sealed connection between the snap ring type metal pipe fitting (1) and the metal pipe. Since the inner wall of the pipe fitting base body has a high-strength anti-corrosion coating, the connecting pipe fitting in the connection structure may have a thin wall thickness, and the pipe fitting is high strength and has better corrosion resistance. Thus, ordinary metal materials may be used to achieve good crimp deformation properties, thereby improving the sealing performance and reducing the cost of materials.

Inventors:
ZHOU, Qingnian (No. 37, Xialingyan Road Yandang Town, Yueqing Cit, Wenzhou Zhejiang 4, 325614, CN)
YU, Zhangfa (No. 160, Yangqingxiang Chengguan, Zhugang Town, Yuhuan Count, Taizhou Zhejiang 0, 317600, CN)
Application Number:
CN2018/111857
Publication Date:
May 02, 2019
Filing Date:
October 25, 2018
Export Citation:
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Assignee:
ZHOU, Qingnian (No. 37, Xialingyan Road Yandang Town, Yueqing Cit, Wenzhou Zhejiang 4, 325614, CN)
YU, Zhangfa (No. 160, Yangqingxiang Chengguan, Zhugang Town, Yuhuan Count, Taizhou Zhejiang 0, 317600, CN)
International Classes:
F16L21/03
Foreign References:
CN207599202U2018-07-10
CN205136880U2016-04-06
CN2185359Y1994-12-14
AU2014201808B22016-02-04
CN201621393U2010-11-03
Attorney, Agent or Firm:
GE CHENG & CO., LTD. (CHENG, David W.Level 19,Tower E3, The Towers, Oriental Plaza, No.1,East Chang An Avenue, Dongcheng District, Beijing 8, 100738, CN)
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