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Chinese National Standard Category: Basic standards and general method |
English Title: | Graphical symbols and letter codes for thermal engineering in the technical documentation |
Chinese Title: | 技术文件用热工图形符号与文字代号 |
Standard No.: | GB/T 4270-1999 |
Category No.: | F04 |
Issued by: | AQSIQ |
Issued on: | 1999-11-23 |
Implemented on: | 2000-5-1 |
Status: | valid |
Superseded by: | |
Superseded on: | |
Abolished on: | |
Superseding: | GB/T 4270-1984 Graphical and letter symbols for thermal engineering |
Word Count: | 12000 words |
Similar Standards: | GB 12021.5-1989 GB/T 4960.7-1996 T/CNESA 1203-2021 GB 12021.8-1989 GB 12021.4-1989 GB/T 16615-1996 GB/T 43033-2023 GB/T 42680-2023 GB/T 4960.2-2023 GB/T 43025-2023 GB/T 41717-2022 GB/T 42031-2022 GB/T 41770-2022 GB/T 41038-2021 GB/T 21534-2021 GB/T 30887-2021 GB/T 39776-2021 GB/T 38678-2020 GB/T 38680-2020 GB/T 13234-2018 |
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