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GB/T 23561.3-2009 Methods for determining the physical and mechanical properties of coal and rock - Part 3: Methods for determining the block density of coal and rock $260.00 via email in 1~3 business day valid
GB/T 23561.4-2009 Methods for determining the physical and mechanical properties of coal and rock - Part 4: Methods for calculating the porosity of coal and rock $144.00 via email in 1~3 business day valid
GB/T 23561.5-2009 Methods for determining the physical and mechanical properties of coal and rock - Part 5: Methods for determining the water absorbability of coal and rock $144.00 via email in 1~3 business day valid
GB/T 23561.6-2009 Methods for determining the physical and mechanical properties of coal and rock - Part 6: Methods for determining the moisture content of coal and rock $144.00 via email in 1~3 business day valid
GB/T 23561.7-2009 Methods for determining the physical and mechanical properties of coal and rock - Part 7: Methods for determining the uniaxial compressive strength and counting softening coefficient $180.00 via email in 1~3 business day valid
GB/T 23561.8-2009 Methods for determining the physical and mechanical properties of coal and rock - Part 8: Methods for determining the deformation parameters of coal and rock $180.00 via email in 1~3 business day abolished
GB/T 23561.8-2024 Methods for determining the physical and mechanical properties of coal and rock—Part 8: Methods for determining the deformation parameters of coal and rock $210.00 via email in 1~3 business day valid
GB/T 23561.9-2009 Methods for determining the physical and mechanical properties of coal and rock - Part 9: Methods for determining the triaxial strength and deformation parameters of coal and rock $240.00 via email in 1~3 business day valid
GB/T 24506-2009 Type and specification and model number of powered support $240.00 via email in 1~3 business day valid
GB/T 25217.1-2010 Methods for test monitoring and prevention of rock burst—Part 1:Classification and laboratory test method on bursting liability of roof strata $100.00 via email in 1~3 business day valid
GB/T 25217.14-2020 Methods for test,monitoring and prevention of rock burst—Part 14:Prevention method of roof hydraulic fracturing $190.00 via email in 1~3 business day valid
GB/T 25217.2-2010 Methods for test monitoring and prevention of rock burst—Part 2:Classification and laboratory test method on bursting liability of coal $360.00 via email in 1~3 business day valid
GB/T 31392-2015 Technical guidance for the utilization of coal mine water $70.00 via email in 1~3 business day superseded
GB/T 31537-2015 Terms relating to coalbed methane(coal mine gas) $930.00 via email in 1~10 business day valid
GB/T 31862-2015 Commercial coal quality―Lignite $60.00 via email in 1~3 business day valid
GB/T 38110-2019 Graphical symbols for the technical documentation of coal mining $750.00 via email in 1~5 business day valid
GB/T 42249-2022 Codes for comprehensive utilization of mineral resources $165.00 via email in 1~3 business day valid
GB/T 44823-2024 General principles for assessment of green mine $315.00 via email in 1~5 business day valid
KA/T 1086-2011 Drawings method on coal mine gas-geology map via email in business day valid
MT 286-1992 Model Compilation Method and Management Method for Automotive Product of Coal Mine Communication $90.00 via email in 1~3 business day valid
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