This Part of EN 10217 specifies the technical delivery conditions for qualities TR1, TR2A and TR2B of electric welded and submerged arc welded tubes of circular cross section, with specified room temperature properties, made from non-alloy quality steel. Qualities TR2A and TR2B are intended to support the essential requirements of EU Directive 97/23/EC in respect of pressure equipment with specified room temperature properties (see Tables 5 & 6). NOTE Once this standard is published in the Official Journal of the European Union (OJEU), presumption of conformity to the Essential Safety Requirements (ESR) of Directive 97/23/EC is limited to the technical data for the materials in this standard and does not presume adequacy of the material for a specific item of pressure equipment. Consequently, the assessment of the technical data stated in this material standard against the design requirements of this specific item of equipment to verify that the ESRs of the Pressure Equipment Directive are satisfied, needs to be done by the designer or manufacturer of the pressure equipment, taking also into account the subsequent manufacturing processes which may affect properties of the base materials. NOTE For further information see the guideline of European Commission and the Member State for the Interpretation of Directive 97/23/EC, Annex I