China Railway No.3 Engineering Group Co.Ltd

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for automatically polishing butt weld of ultralong large-...
- Patent number 12,350,786
- Issue date Jul 8, 2025
- CHINA RAILWAY NO. 3 ENGINEERING GROUP CO., LTD.
- Depeng Sun
- B24 - GRINDING POLISHING
Information Patent Grant
Method for installing steel tube arches
- Patent number 11,655,600
- Issue date May 23, 2023
- China Railway No.3 Engineering Group Co.Ltd
- Yugen Zhang
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES

Patents Applicationslast 30 patents

Information Patent Application
APPARATUS FOR AUTOMATICALLY POLISHING BUTT WELD OF ULTRALONG LARGE-...
- Publication number 20250121473
- Publication date Apr 17, 2025
- China Railway No. 3 Engineering Group Co., Ltd.
- Depeng SUN
- B24 - GRINDING POLISHING
Information Patent Application
CONSTRUCTION METHOD FOR MAKING WATER-RICH SAND LAYER SHIELD OVER CR...
- Publication number 20210301660
- Publication date Sep 30, 2021
- Bridge & Tunnel Engineering Company of the Third Engineering Group Co. Ltd. o...
- Gangzhu LI
- E21 - EARTH DRILLING MINING
Information Patent Application
Method For Installing Steel Tube Arches
- Publication number 20210164176
- Publication date Jun 3, 2021
- China Railway No.3 Engineering Group Co.Ltd
- YUGEN Zhang
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES

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