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Petroleum and natural gas industries - Rotary drilling equipment - Part 1Rotary drill stem elements
Automatically translated name:
Petroleum and natural gas industries - Rotary drilling equipment - Part 1,?otary drill stem elements
STANDARD published on 9.3.2012
Designation standards: GB/T 22512.1-2012
Publication date standards: 9.3.2012
SKU: NS-358251
Country: Chinese technical standard
Category: Technical standards GB
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