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6 Information to be supplied by the purchaser6.1 Mandatory informationThe following information shall be supplied by the purchaser at the time of enquiry and order: the quantity (mass or total length or number); the term “tube”; the dimensions (outside diameter D and wall thickness T) (see Table 7); the designation of the steel grade in accordance with this Part of EN 10216 (see 5.2).6.2 OptionsA number of options are specified in this Part of EN 10216 and these are listed below. In the event that thepurchaser does not indicate a wish to implement any of these options at the time of enquiry and order, thetubes shall be supplied in accordance with the basic specification (see 6.1).1) Delivery condition normalized or normalizing-formed for TR1 (see 7.2.2);2) restriction on copper and tin contents (see Table 2 and Table 3);3) product analysis (see 8.2.2);4) verification of longitudinal impact testing at −10 °C for quality TR2 (see Table 5 and Table 6);5) selection of method for verification of leak-tightness (see 8.4.2.1);6) Non-Destructive Testing for quality TR2 (see 8.4.2.2); the test method shall be specified by thepurchaser;7) special end preparation (see 8.6);8) exact lengths (see 8.7.3);9) inspection document 3.2 other than the standard document (see 9.2.1);BS EN 10216-1:2013EN 10216-1:2013 (E)810) test unit restriction for tubes with D ≤ 76,1 mm of quality TR2 (see 10.1.1);11) wall thickness measurement away from the ends (see 11.5);12) additional marking (see 12.2);13) protection (see 13).6.3 Example of an order100 t of seamless tube with an outside diameter of 168.3 mm, a wall thickness of 4,5 mm, in accordance withEN 10216-1, made of steel grade P235TR2 with a 3.2 inspection certificate in accordance with EN 10204.EXAMPLE 100 t - Tube – 168,3 × 4,5 - EN 10216-1 - P235TR2 - 3.2.7 Manufacturing process7.1 Steelmaking processThe steelmaking process is at the discretion of the manufacturer with the exception that the open hearth(Siemens-Martin) process shall not be employed unless in combination with a secondary steelmaking or ladlerefining process.Steels shall be fully killed.NOTE This excludes the use of rimming, balanced or semi-killed steel.7.2 Tube manufacture and delivery conditions7.2.1 All NDT activities shall be carried out by qualified and competent level 1,2 and/or 3 personnelauthorized to operate by the employer.The qualification shall be in accordance with ISO 11484 or, at least, an equivalent to it.It is recommended that the level 3 personnel be certified in accordance with EN ISO 9712 or, at least, anequivalent to it.The operating authorization issued by the employer shall be in accordance with a written procedure.NDT operations shall be authorized by level 3 NDT individual approved by the employer.NOTE The definition of level 1, 2 and 3 can be found in appropriate standards, e.g. EN ISO 9712 and ISO 11484.7.2.2 The tubes shall be manufactured by a seamless process. The forming operations and deliveryconditions are shown in Table 1.
