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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 39382-2020 |
Thermoplastics piping systems for soil and waste discharge inside buildings—Test method for airtightness of joints 建筑内排水排污用热塑性塑料管道系统 接头气密性试验方法 |
China National Standards airtightness |
 English PDF |
| GB/T 25229-2010 |
Grain and oils storage － Requirement of airtightness of warehouse 粮油储藏 平房仓气密性要求 |
China National Standards airtightness |
English PDF |
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