GB 5751-1986
Replaced
NB/T 11941-2025
Active
Industry standards-Energy
NB/T 11941-2025 The technical requirements for the entire well screen pipe process of gas extraction for soft coal seams include: installing screens at the bottom of the well drilled for gas extraction, and ensuring that the screens are securely fixed in place
NB/T 11941-2025 The technical requirements for the entire well screen pipe process of gas extraction for soft coal seams include: installing screens at the bottom of the well drilled for gas extraction, and ensuring that the screens are securely fixed in place
Basic Information
Standard Code:
NB/T 11941-2025
Standard Type:
Industry standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Mining
ICS Name:
\nCoal
Publish Date:
2025-12-18
Implement Date:
2026-06-18
Publisher:
国家能源局
Technical Committee:
能源行业煤矿瓦斯治理与利用标准化技术委员会
Development Information
Related Standards
GB 481-1993
abolished_transferred
GB 481-1993 Sampling method of coal sample for production
GB/T 15223-1994
Replaced
GB/T 15223-1994 Plastics—Liquid resins—Determination of density by the pyknometer method
GB/T 15224.1-1994
Replaced
GB/T 15224.1-1994 Classification for quality of coal—Classification for ash yield of coal
GB/T 15224.2-1994
Replaced
GB/T 15224.2-1994 Classification for quality of coal—Classification for sulphur content of coal
GB/T 15224.3-1994
Replaced