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Keyword:
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| SY/T 6509-2012 |
Kellys 方钻杆 |
China Oil & Gas Industry
Standards Kellys |
 English PDF |
| SN/T 0822-2011 |
Rules for the inspection of drill collars and square-hexagon Kellys for import and export 进出口石油钻铤、方钻杆检验规程 |
China Import Export Inspection
Standards Kellys |
English PDF |
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