| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| JJG 149-1991 | English | 239 |
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Days<=2
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Verification Regulation of Standard Superficial Rockwell Hardness Test Block
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JJG 149-1991
| Obsolete |
JJG 149-1991
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