一种带有复合螺旋耐磨层的抽油杆及制备装置和制备方法
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Title:一种带有复合螺旋耐磨层的抽油杆及制备装置和制备方法
Institution:材料科学与工程学院
Type of Patent:Invent
Application Number:201510431844.6
Number of Inventors:1
Service Invention or Not:No
Application Date:2015-07-21
Publication Date:2018-03-02
Authorization Date:2018-03-02
Release Time:2019-04-15