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GB/T 4270-1999 English PDF

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GB/T 4270-1999: Graphical symbols and letter codes for thermal engineering in the technical documentation

GB/T 4270: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 4270-1999English979 Add to Cart 5 days [Need to translate] Graphical symbols and letter codes for thermal engineering in the technical documentation   GB/T 4270-1999
GB/T 4270-1984EnglishRFQ ASK 3 days [Need to translate] Graphical and letter symbols for thermal engineering Obsolete GB/T 4270-1984

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Basic data

Standard ID GB/T 4270-1999 (GB/T4270-1999)
Description (Translated English) Graphical symbols and letter codes for thermal engineering in the technical documentation
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard F04
Classification of International Standard 01.080.20
Word Count Estimation 28,299
Date of Issue 11/23/1999
Date of Implementation 5/1/2000
Older Standard (superseded by this standard) GB/T 4270-1984
Issuing agency(ies) State Quality and Technical Supervision
Summary This standard specifies the technical documentation thermal graphic symbols and text code. This standard applies to workers involved in the field of technical documentation thermal design, research, production and other aspects of teaching.

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Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 4270-1999 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.