| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| SY 5426-1991 | English | 239 |
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Days<=2
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(Drillability Determination and Classification Methods)
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SY 5426-1991
| Obsolete |
SY 5426-1991
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