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| International Standard Category: Abrasives |
GB/T 21944.4-2009 Special products of silicon carbide - Kiln furniture of reaction bonded silicon carbide - Part 4：Burner nozzle
碳化硅特种制品 反应烧结碳化硅窑具 第4部分：烧嘴套;
| Category No.: | 25.100.70 | Valid Status: | superseded |
| Issued Organization: | AQSIQ; SAC | Issued Date: | 2009-4-23 |
| Implemented Date: | 2009-12-1 | Abolished Date: | |
| Superseded Standard.: | GB/T 21944.4-2022 Special products of silicon carbide—Kiln furniture of reaction bonded silicon carbide—Part 4: Burner nozzles |
Superseded Date: | 2023-2-1 |
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