China Coal quality classif GB Standards Search Result |
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GB/T 15224.3-2022 Coal quality classification part 3: calorific value 煤炭质量分级 第3部分：发热量 - 中英文版 |
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GB/T 15224.2-2021 Classification for quality of coal—Part 2: Sulfur content 煤炭质量分级 第2部分：硫分 - 中英文版 |
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GB/T 15224.1-2018 Classification for quality of coal—Part 1: Ash 煤炭质量分级 第1部分：灰分 - 中英文版 |
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GB/T 15224.3-2010 Classification for quality of coal - Part 3: Calorific value 煤炭质量分级 第3部分：发热量 - 中英文版 |
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GB/T 15224.2-2010 Classification for quality of coal - Part 2: Sulfur content 煤炭质量分级 第2部分：硫分 - 中英文版 |
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GB/T 15224.1-2010 Classification for quality of coal - Part 1: Ash 煤炭质量分级 第1部分：灰分 - 中英文版 |
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