Title:
HIGH-PERFORMANCE, CORROSION-RESISTANT AND ECONOMICAL COMPOSITE STEEL COILED TUBING AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/196622
Kind Code:
A1
Abstract:
A high-performance, corrosion-resistant and economical composite steel coiled tubing and a manufacturing method therefor, the composite steel coiled tubing comprising: a metallurgically bonded base layer (1) and composite layer (2); the base layer (1) is a carbon steel or low alloy steel layer; the composite layer (2) is a corrosion-resistant alloy, such as stainless steel or a titanium alloy, the composite layer (2) being disposed at an inner surface or outer surface of the base layer (1). The manufacturing method therefor comprises: the processing of the base layer (1) and the composite layer (2), using high-temperature rolling to achieve the tight bonding of metallurgical layers of the base layer (1) and the composite layer (2), and using straight seam welding to form the composite steel coiled tubing. The manufactured composite steel coiled tubing is strong, has good plastic toughness, is corrosion resistant and is economical.
Inventors:
CAI XIAOJING (CN)
CHEN HUASHUN (CN)
REN CHENGJUN (CN)
LIN XU (CN)
YAN GUANG (CN)
CHEN HUASHUN (CN)
REN CHENGJUN (CN)
LIN XU (CN)
YAN GUANG (CN)
Application Number:
PCT/CN2018/082784
Publication Date:
November 01, 2018
Filing Date:
April 12, 2018
Export Citation:
Assignee:
JASON ENERGY TECH CO LTD (CN)
International Classes:
F16L9/02; B21C37/15; B23K33/00; C22C38/18; C22C38/50; F16L9/04; F16L58/08
Domestic Patent References:
| WO2014169365A2 | 2014-10-23 |
Foreign References:
| CN105921545A | 2016-09-07 | |||
| CN102962563A | 2013-03-13 | |||
| CN102899581A | 2013-01-30 | |||
| CN104455761A | 2015-03-25 | |||
| CN107143702A | 2017-09-08 |
Attorney, Agent or Firm:
YANTAI BINGCHENG PATENT AGENCY(GENERAL PARTNERSHIP) (CN)
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