00575nam a2200193 4500 20260608203234.0 260224s2009 dcu CAJA 4 RP 7HU1 Safe use of 2-inch hammer unions for oilfield applications API Recommended practice 7HU1 API 7HU1 Washington American Petroleum Institute, API 2009 09/05/2013 ; 2010-11-18 12 p. NORMA American Petroleum Institute, API 105 171981 171981 0 0 0 0 239800 BAAB BAAB CAJA 4 2026-03-05 200049941 0 CAJA 4 200049941 2026-03-05 16:07:42 2026-03-05 Libro