GB/T 20475.1-2006
ActiveClassification for content of harmful elements in coal - Part 1:phosphorus
煤中有害元素含量分级 第1部分:磷
🔗 Related Standards / 同类标准
GB/T 15589-1995
Classification of microlithotype
GB/T 12937-1995
Terms relating to coal petrology
GB/T 16414-1996
Terms relating to coal mining--Rock mechanics
GB/T 189-1997
Classification standard for size fractions of coal
GB/T 9649.9-1998
The terminology classification codes of geology and mineral resources--The crystallography and mineralogy
GB/T 17607-1998
Chinese classification of seam coals
GB/T 17610-1998
Technical condition of coal for two-stage cyclic water gas gasifier
GB/T 7563-2000
Technical condition of coal for cement rotary kiln