Fangfang Zhang

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Guanghan, CN

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Patents Applicationslast 30 patents

Information Patent Application
Efficient five-cylinder drilling pump system, solids control system...
- Publication number 20240183344
- Publication date Jun 6, 2024
- SICHUAN HONGHUA PETROLEUM EQUIPMENT CO., LTD
- Fangfang Zhang
- E21 - EARTH DRILLING MINING
Information Patent Application
High-power five-cylinder drilling pump set, solid control system an...
- Publication number 20240125320
- Publication date Apr 18, 2024
- SICHUAN HONGHUA PETROLEUM EQUIPMENT CO., LTD.
- Fangfang Zhang
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Crosshead part and crosshead system for drilling pumps and the dril...
- Publication number 20230213065
- Publication date Jul 6, 2023
- SICHUAN HONGHUA PETROLEUM EQUIPMENT CO., LTD.
- Fangfang Zhang
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...