ISO 2290:1972
Rotary drilling equipment — Upper and lower Kelly cocks
Rotary drilling equipment — Upper and lower Kelly cocks
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Rotary drilling equipment — Upper and lower Kelly cocks
ISO 2290:1972
Rotary drilling equipment — Upper and lower Kelly cocks
| Edition | 1972 |
|---|---|
| Published Date | 1972 |
| Published By | International Standardization Organisation |
| Page Count | 5 |