GB 40881-2021

Code for security system design of low concentration gas pipeline transportation of coal mine

NORMA vydána dne 11.10.2021

Anglicky a čínsky -
Elektronické PDF (4088.30 CZK)

The information about the standard:

Designation standards: GB 40881-2021
Publication date standards: 11.10.2021
Country: Chinese technical standard
Kategorie: Technické normy GB