- Standard No.
- GB 7957-2023
- Language
- Chinese, Available in English version
- Release Date
- 2023
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
-
GB 7957-2023
- Replace
-
GB/T 7957-2017
GB 7957-2023 history
- 2023 GB 7957-2023 Safety technical requirements for miner's lamps used in coal mines
- 2017 GB/T 7957-2017 General requirements for construction,performance and explosion protected testing of caplights for use in mines susceptible to firedamp
- 2003 GB 7957-2003 General requirements for safety of cap lamp
- 0000 GB/T 7957-1987
GB 7957-2023 Safety technical requirements for miner's lamps used in coal mines has been changed from GB/T 7957-2017 General requirements for construction,performance and explosion protected testing of caplights for use in mines susceptible to firedamp.