ONORM EN ISO 11961:2009被替代
Petroleum And Natural Gas Industries - Steel Drill Pipe
出版：Osterreichisches Normungsinstitut
专家解读视频
Describes the technical delivery conditions for steel drill pipes with upset pipe body ends and weld-on tool joints for use in drilling and production operations in petroleum and natural gas industries for three Product Specification Levels (PSL-1, PSL-2 and PSL-3).
NF EN ISO 11961:1997 - Identical
NBN EN ISO 11961:2009 - Identical
SN EN ISO 11961:2009 - Identical
NS EN ISO 11961:2008 - Identical
UNI EN ISO 11961:2009 - Identical
SS EN ISO 11961 Ed. 2 (2008) - Identical
NEN EN ISO 11961:2008 - Identical
