MT/T 375.1-1994 Mining magnesium-lime concrete products general technical specification

MT/T 375.2-1994 Mining magnesium cement concrete product trapezoidal bracket technical specification MT/T 375.3-1994 Mining magnesium cement concrete products narrow-gauge rail sleeper MT/T 375.4-1994 Mining magnesium cement concrete products backboard, gutter cover board and coal stop board technical specification

GBJ 81 GB/T 176-1996 Method for chemical analysis of cement GB/T 176-2008 Methods for chemical analysis of cement GB/T 176-2017 Methods for chemical analysis of cement GB/T 177-1985 Test method for strength of hydraulic cement mortar GB/T 1345-1991 Test method for fineness of cement—The 80μm sieve GB/T 1345-2005 The test sieving method for fineness of cement GB/T 1346-2001 Test methods for water requirement of normal consistency,setting time and soundness of the portland cements GB/T 1346-2011 Test methods for water requirement of normal consistency,setting time and soundness of the portland cement GB/T 13041-1991 Packaging containers—Magnesium oxychloride concrete case GB/T 13041-2005 Packaging containers—Magnesium oxychloride concrete case GB/T 1346-2024 Test methods for water requirement of standard consistency,setting time and soundness of the portland cement GB/T 176-2025 Methods for chemical analysis of cement GB/Z 177.1-2026 Intelli gencegrading of artificial intelligence terminal—Part 1:Reference framework GB/Z 177.2-2026 Intelligence grading of artificial intelligence terminal—Part2:General requirements GB/Z 177.3-2026 Intelligence grading of artificial intelligence terminal—Part3:Mobile terminal GB/Z 177.4-2026 Intelligence grading of artificial intelligence terminal—Part 4:Microcomputer GB/Z 177.7-2026 Intelligence grading of artificial intelligence terminal—Part 7:Cockpit GB/Z 177.8-2026 Intelligence grading of artificial intelligence terminal—Part 8:Speaker GB/Z 177.9-2026 Intelligence grading of artificial intelligence terminal—Part 9:Earphone