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Drilling rotors and for oil and gas wells repair. Basis parameters and dimensions
STANDARD published on 1.1.1980
Designation standards: GOST 4938-78
Note: WITHDRAWN
Publication date standards: 1.1.1980
SKU: NS-394583
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: Russian technical standard
Category: Technical standards GOST
Implemented changes and corrections:
Amd. 2.85
Amd. 11.86
Amd. 11.90
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Latest update: 2024-12-22 (Number of items: 2 217 000)
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