| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 1149.12-2013 | English | 599 |
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Days<=3
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Internal combustion engines -- Piston rings -- Part 12: Half keystone rings made of steel
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GB/T 1149.12-2013
| Obsolete |
GB/T 1149.12-2013
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