国家/地区 中国（2）
IPC部 C（2）
IPC大类 C09（2）
IPC小类 C09D（2）
IPC C09D005/08（2）
发明人
公开年 2022（2）
申请年
专利权人

Corrosion-resistant and erosion-resistant surface protection for use in oil well packer, involves superimposing orderly phosphate ceramic membrane protective layer, epoxy-organosilicon modified anti-corrosion coating and fluorocarbon anti-corrosion coating, and coating on surface of metal component.

ZHONG X, YAN Y, WANG Y, ZHANG X, HU L, CHENG F, GONG N, MA Y, ZHANG M

Composite aluminum pipe with G-shaped pipe comprises a steel pipe and an aluminum pipe combined by cold drawing, and a fin connected with aluminum pipe by a groove outside aluminum pipe and a coating layer provided at outer part of G-shaped pipe.

LU Y