| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 18691.4-2011 | English | 559 |
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Days<=3
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Agricultural irrigation equipment -- Irrigation valves -- Part 5: Air valves
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GB/T 18691.4-2011
| Obsolete |
GB/T 18691.4-2011
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