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| International Standard Category: Measuring instruments |
GB 50493-2009 Specification for Design of Combustible Gas and Toxic Gas Detection and Alarm for Petrochemical Industry
石油化工可燃气体和有毒气体检测报警设计规范;
| Category No.: | 17.040.30 | Valid Status: | superseded |
| Issued Organization: | AQSIQ; MOC | Issued Date: | 2009-03-19 |
| Implemented Date: | 2009-10-1 | Abolished Date: | |
| Superseded Standard.: | GB/T 50493-2019 Standard for design of combustible gas and toxic gas detection and alarm for petrochemical industry |
Superseded Date: | 2020-1-1 |
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