ISO 15546:2011 specifies the technical delivery conditions, manufacturing process, material requirements, configuration and dimensions, and verification and inspection procedures for aluminium alloy drill pipes with or without attached steel tool joints, for use in drilling and production operations in the petroleum and natural gas industries. A typical drill pipe configuration is provided, showing main elements and lengths. The main dimensions and masses of the grades of drill pipe are given in both SI units and USC units. ISO 15546:2011 does not consider performance properties.