GB/T 12937-2008 English PDFUS$509.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 12937-2008: Terms relating to coal petrology Status: Valid GB/T 12937: Historical versions
Basic dataStandard ID: GB/T 12937-2008 (GB/T12937-2008)Description (Translated English): Terms relating to coal petrology Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: D26 Classification of International Standard: 73.040 Word Count Estimation: 22,216 Date of Issue: 2008-09-18 Date of Implementation: 2009-04-01 Older Standard (superseded by this standard): GB/T 12937-1995 Adopted Standard: ISO 7404-1-1994, MOD Regulation (derived from): National Standard Approval Announcement 2008 No.16 (Total No.129) Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies the macro study of coal humic coal and rock, relevant terminology and microscopic analysis methods. This standard applies to lignite, bituminous coal and anthracite. GB/T 12937-2008: Terms relating to coal petrology---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.Terms relating to coal petrology ICS 73.040 D26 National Standards of People's Republic of China Replacing GB/T 12937-1995 The term of coal (ISO 7404-1.1994, Methodsforthepetrographicanalysisof bituminouscoalandanthracite-Part 1. Vocabulary, MOD) Posted 2008-09-18 2009-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released Table of ContentsPreface Ⅰ 1 Scope 1 2 bituminous coal and anthracite coal rock 1 term The term lignite coal and rock 3 6 4 of coal microscopic test method terminology 8 Appendix A (informative) The standard entry number and ISO 7404-1.1994 entries Number Control 10 Annex B (informative) The standard entry number and ISO 7404-1.1994 technical differences and their reasons 11 Pinyin index 13 English equivalents index 15ForewordThis revised standard adopts ISO 7404-1.1994 "bituminous coal and anthracite coal and rock analysis methods --- Part 1. Terminology" (English Chinese Version). This standard replaces GB/T 12937-1995 "terms of coal and rock." The revised standard reads as follows. --- Cancel half term vitrinite and its components, inertinite increased secretion of body terms, microscopic mineral type added five new terminology, Test Methods term increase in fluorescence component terms. --- Increase in Appendix A, for the ISO 7404-1.1994 entries related to cross-reference number. --- Increase in Appendix B, for the ISO 7404-1.1994 about the technical differences between mutual controls. --- Increase in Chinese pinyin and English equivalents index. This standard is based on ISO 7404-1.1994 redrafted. For ease of comparison, in Appendix A lists the standard terms of the number and ISO 7404-1.1994 control list entries numbered. Consider China's national conditions, in the use of ISO 7404-1.1994 when you made some changes. These technical differences identified in it a single vertical line Margin were involved in terms of pages. List of technical differences and the reasons given in Appendix B for reference. For ease of use, this standard also made the following editorial changes. a) "this International Standard" be replaced by "this standard"; b) Remove the foreword and introduction of international standards. The Standard Appendix A, Appendix B is an informative annex. The standard proposed by China Coal Industry Association. This standard by the National Standardization Technical Committee of Coal. This standard was drafted. Coal Research Institute, Xi'an Institute. The main drafters of this standard. Qun, Li Xiaoyan. This standard replaces the standards previously issued as follows. --- GB/T 12937-1991, GB/T 12937-1995. The term of coal1 ScopeThis standard specifies the relevant terminology macro, micro and analytical methods of coal humic Studies coal rocks. This standard applies to lignite, bituminous coal and anthracite.2 bituminous coal and anthracite coal and rock term2.1 Visually identify the basic unit of humic coals. 2.1.1 Coal strongest luster, black, uniform, brittle, endogenous component of coal and rock fracture development. 2.1.2 Coal luster strong, bright views with constituents of coal texture. 2.1.3 Coal glossy dark, dense and hard, uneven coal and rock composition. 2.1.4 Coal silky luster, fibrous structure, brittle coal rock composition. 2.2 Based on overall strength and luster of coal relative to divide the light component content type, to a certain extent reflect the composition of coal composition. 2.2.1 Coal strongest overall relative luster macro type of coal, the light component content greater than 80%. 2.2.2 Overall coal relatively strong macro shiny coal and rock type, its light component content greater than 50% to 80%. 2.2.3 Overall coal relatively weak macro shiny coal and rock type, its light component content greater than 20% to 50%. 2.2.4 Coal weakest overall relative luster macro type of coal, the light component content is less than 20%. 2.3 An integral unit under the microscope discernible coal. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 12937-2008_English be delivered?Answer: Upon your order, we will start to translate GB/T 12937-2008_English as soon as possible, and keep you informed of the progress. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 12937-2008?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 12937-2008 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
