| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| SY 5020-1980 | English | 199 |
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Days<=2
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(Mud pump piston, rod and crosshead mediated by cone with cone - cylindrical connecting thread)
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SY 5020-1980
| Obsolete |
SY 5020-1980
|