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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 39187-2020 |
Jack up conductor/blow out preventer tension compensation system 自升式平台隔水管/防喷器张力补偿系统 |
China National Standards preventer |
 English PDF |
| GB/T 25178-2020 |
Reduced-pressure type backflow preventer 减压型倒流防止器 |
China National Standards preventer |
English PDF |
| GB/T 25178-2010 |
Reduced-pressure type backflow preventer 减压型倒流防止器 |
China National Standards preventer |
English PDF |
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