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| Chinese National Standard Category: Basic standards and general methods |
| English Title: | Mechanical drawings-Surface roughness symbols and methods of indicating |
| Chinese Title: | 机械制图 表面粗糙度符号、代号及其注法 |
| Standard No.: | GB/T 131-1993 |
| Category No.: | J04 |
| Issued by: | State Qualtiy Technical Supervision Bureau |
| Issued on: | 1993-01-01 |
| Implemented on: | 1994-7-1 |
| Status: | superseded |
| Superseded by: | GB/T 131-2006 Geometrical Product Specifications (GPS) - Indication of surface texture in technical Product documentation |
| Superseded on: | 2007-2-1 |
| Abolished on: | 2007-02-01 |
| Superseding: | GB 131-1983 Mechanical drawings - Surface roughness symbols and methods of indicating |
| Word Count: | 11000 words |
| Similar Standards: | GB/T 9239.11-2025 GB/T 7031-2025 GB/T 20921-2025 GB/T 11349.2-2025 GB/T 9239.2-2025 GB/T 33218-2025 GB/T 33208-2025 GB/T 33213-2025 GB/T 9144-2025 GB/T 192-2025 GB/T 196-2025 GB/T 35351-2025 GB/T 33523.700-2025 GB/T 26958.30-2025 GB/T 26958.20-2025 GB/T 26958.1-2025 GB/T 23904-2025 GB/T 19348.2-2025 GB/T 15754-2025 DB32/T 5134-2025 |
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