Changyi Su

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Wuhan, CN

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Patents Grantslast 30 patents

Information Patent Grant
Rapid construction method for secondary lining of small-section tunnel
- Patent number 11,480,054
- Issue date Oct 25, 2022
- CCTEB INFRASTRUCTURE CONSTRUCTION INVESTMENT CO., LTD.
- Xiaosong Dai
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Full-circle secondary lining inverted arch construction formwork sy...
- Publication number 20210231014
- Publication date Jul 29, 2021
- CCTEB INFRASTRUCTURE CONSTRUCTION INVESTMENT CO., LTD.
- Xiaosong Dai
- E21 - EARTH DRILLING MINING
Information Patent Application
Rapid construction method for secondary lining of small-section tunnel
- Publication number 20210231015
- Publication date Jul 29, 2021
- CCTEB INFRASTRUCTURE CONSTRUCTION INVESTMENT CO., LTD.
- Xiaosong Dai
- E21 - EARTH DRILLING MINING