Title:
CONNECTING STRUCTURE OF STEEL PIPE
Document Type and Number:
Japanese Patent JP2019163781
Kind Code:
A
Abstract:
To provide a connecting structure of a steel pipe which can suppress the loosening of a screw point.SOLUTION: A connecting structure of a steel pipe comprises a first connecting part 20a, a second connecting part 20b, and a joint part 3. The first connecting part 20a has a first male screw part 21a provided at an outer surface and including a thread in a first winding direction L, and a first female screw part 22a provided at an inner surface and including a thread in a second winding direction R. The second connecting part 20b has a second male screw part 21b provided at an outer surface and including a thread in the first winding direction L, and a tip part 20c integrally provided at a portion at which the second male screw part 21b is provided. The tip part 20c has a tip male screw part 22c provided at an outer surface, including a thread in the second winding direction R, and screwed with the first form screw part 22a. The joint part 3 has a joint female screw part 31 provided at an inner surface, including a thread in the first winding direction L, and screwed with the first male screw part 21a and the second male screw part 21b.SELECTED DRAWING: Figure 1
Inventors:
MYONAKA SHINJI
AGATA ATSUSHI
AGATA ATSUSHI
Application Number:
JP2018050634A
Publication Date:
September 26, 2019
Filing Date:
March 19, 2018
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
F16B7/18; E02D5/24; E02D5/28
Domestic Patent References:
| JPH02236013A | 1990-09-18 | |||
| JP4728041B2 | 2011-07-20 | |||
| JPH0612254Y2 | 1994-03-30 | |||
| JPH10315159A | 1998-12-02 | |||
| JPH08261216A | 1996-10-08 | |||
| JP2016125619A | 2016-07-11 |
Foreign References:
| US20160376851A1 | 2016-12-29 |
Attorney, Agent or Firm:
Yasuhiko