| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 6138.2-1997 | English | 199 |
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Days<=2
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Subland twist drills for holes prior to tapping screw threads. Part 1: The types and dimensions for subland twist drills with Morse shanks
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GB/T 6138.2-1997
| Obsolete |
GB/T 6138.2-1997
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