Lili Zhang

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Hebei, CN

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Patents Grantslast 30 patents

Information Patent Grant
Rolling-bulging forming hydraulic machine for tubular products
- Patent number 11,679,426
- Issue date Jun 20, 2023
- Yanshan University
- Junting Luo
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Device and method for strengthening thin-walled straight pipe
- Patent number 11,141,773
- Issue date Oct 12, 2021
- YANSHAN UNIVERSITY
- Yongfei Gu
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method of forming thick-walled cylinder by spinning
- Patent number 11,110,504
- Issue date Sep 7, 2021
- YANSHAN UNIVERSITY
- Lili Zhang
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
ROLLING-BULGING FORMING HYDRAULIC MACHINE FOR TUBULAR PRODUCTS
- Publication number 20210299720
- Publication date Sep 30, 2021
- Yanshan University
- Junting LUO
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
DEVICE AND METHOD FOR STRENGTHENING THIN-WALLED STRAIGHT PIPE
- Publication number 20210299728
- Publication date Sep 30, 2021
- Yanshan University
- Yongfei GU
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
METHOD OF FORMING THICK-WALLED CYLINDER BY SPINNING
- Publication number 20210299727
- Publication date Sep 30, 2021
- Yanshan University
- Lili ZHANG
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...