TC 67/SC 5 - Casing, tubing and drill pipe
- Participating countries: 19
- Observing countries: 8
Secretariat:
Participating Countries
- Argentina ( IRAM )
- Brazil ( ABNT )
- Canada ( SCC )
- China ( SAC )
- France ( AFNOR )
- Germany ( DIN )
- India ( BIS )
- Indonesia ( BSN )
- Italy ( UNI )
- Korea, Republic of ( KATS )
- Mexico ( DGN )
- Netherlands ( NEN )
- Norway ( SN )
- Romania ( ASRO )
- Russian Federation ( GOST R )
- South Africa ( SABS )
- USA ( ANSI )
- United Kingdom ( BSI )


