Specifies requirements and gives recommendations for the performance, dimensional and functional interchangeability, design, materials, testing, inspection, welding, marking, handling, storing, shipment, purchasing, repair and remanufacture of wellhead and christmas tree equipment for use in the petroleum and natural gas industries. Defines service conditions, in terms of pressure, temperature and material class for the well-bore constituents, and operating conditions. Establishes requirements for five product specification levels. Applicable to wellhead equipment; connectors and fittings; casing and tubing hangers; valves and chokes; loose connectors (flanged, threaded, other end connectors (OEC), and welded); other equipments.

NBN EN ISO 10423:2005

NEN EN ISO 10423:2010 - Identical

ONORM EN ISO 10423:2010 - Identical

SS EN ISO 10423 Ed. 3 (2009) - Identical

BS EN ISO 10423:2009 - Identical

UNI EN ISO 10423:2012 - Identical

ONORM EN ISO 10423:2005 - Identical

SS EN ISO 10423 Ed. 1 (2002) - Identical

NS EN ISO 10423 Ed. 3 (2004) - Identical

UNI EN ISO 10423:2005 - Identical

BS EN ISO 10423:2004 - Identical

I.S. EN ISO 10423:2009 - Identical

EN ISO 10423:2009 - Identical

NS EN ISO 10423:2009 - Identical

DIN EN ISO 10423 (2010-05) - Identical