Title:
STEEL CASING STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2023/179562
Kind Code:
A1
Abstract:
Disclosed in the present utility model is a steel casing structure, comprising: a tubular body, an inner wall of the tubular body having formed thereon a plurality of protrusion groups, each protrusion group consisting of a plurality of protrusions; the plurality of protrusion groups are distributed at intervals along the axial direction of the tubular body, and the plurality of protrusions in each protrusion group are helically distributed at intervals in the circumferential direction of the tubular body. The present utility model achieves an adjustable connection length between the steel casing structure and a threaded pipe, improves the stability of connection between the steel casing structure and the threaded pipe, and avoids slipping and thread stripping situations.
Inventors:
HONG QIUYAO (CN)
SU YONGRUN (CN)
SU YONGRUN (CN)
Application Number:
PCT/CN2023/082583
Publication Date:
September 28, 2023
Filing Date:
March 20, 2023
Export Citation:
Assignee:
HAOHENG FUJIAN BUILDING MATERIALS TECH CO LTD (CN)
International Classes:
E02D5/52; E02D5/28
Domestic Patent References:
| WO2014080824A1 | 2014-05-30 |
Foreign References:
| CN219240518U | 2023-06-23 | |||
| TW202117138A | 2021-05-01 | |||
| CN209652948U | 2019-11-19 | |||
| CN210194608U | 2020-03-27 | |||
| KR20180135273A | 2018-12-20 |
Attorney, Agent or Firm:
SUZHOU KEXU INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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