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Standard Insuued on: 2005-07 |
Category No.: | SY | Valid Status: | superseded |
Issued Organization: | NDRC | Issued Date: | 2005-07-26 |
Implemented Date: | 2005-10-1 | Abolished Date: | |
Superseded Standard.: | SY/T 6640-2012 The calibration methodology of the down hole electronic pressure gauge |
Superseded Date: | 2012-3-1 |
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