NA 109

DIN Standards Committee Petroleum and Natural Gas Industries

DIN EN ISO 11961 [Withdrawn] references following documents:

Document number Edition Title
API RP 7G 1998-08 Recommended Practice for Drill Stem Design and Operating Limits More 
ISO 10424-2 2007-11 Petroleum and natural gas industries - Rotary drilling equipment - Part 2: Threading and gauging of rotary shouldered thread connections More