GB/T 4270-1999
ActiveGraphical symbols and letter codes for thermal engineering in the technical documentation
技术文件用热工图形符号与文字代号
Application Summary AI generated
This standard provides a unified set of graphical symbols and letter codes specifically for thermal engineering, covering components like heat exchangers, boilers, and piping systems. It is applied in technical documentation, including design drawings, schematics, and manuals, within industries such as power generation, HVAC, and process engineering. The standard ensures clear communication and consistency in representing thermal systems across engineering documents and procurement specifications.
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