EN 10305-2:2010

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Präzisionsstahlrohre - Technische Lieferbedingungen - Teil 2: Geschweißte kaltgezogene RohreTubes de précision en acier - Conditions techniques de livraison - Partie 2: Tubes soudés étirés à froidSteel tubes for precision applications - Technical delivery conditions - Part 2: Welded cold drawn tubes77.140.75Jeklene cevi in cevni profili za posebne nameneSteel pipes and tubes for specific useICS:Ta slovenski standard je istoveten z:EN 10305-2:2009SIST EN 10305-2:2010en01-marec-2010SIST EN 10305-2:2010SLOVENSKI
STANDARDSIST EN 10305-2:20031DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 10305-2
January 2010 ICS 77.140.75 Supersedes EN 10305-2:2002English Version
Steel tubes for precision applications - Technical delivery conditions - Part 2: Welded cold drawn tubes
Tubes de précision en acier - Conditions techniques de livraison - Partie 2: Tubes soudés étirés à froid
Präzisionsstahlrohre - Technische Lieferbedingungen -Teil 2: Geschweißte kaltgezogene Rohre This European Standard was approved by CEN on 22 November 2009.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
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1) Under revision to become EN ISO 10893-1, Non-destructive testing of steel tubes
Part 1: Automated electromagnetic testing of seamless and welded (except submerged arc-welded) steel tubes for the verification of hydraulic leak-tightness instead of the hydrostatic test (ISO/DIS 10893-1:2009). 2) Under revision to become EN ISO 10893-2, Non-destructive testing of steel tubes
Part 2: Automated eddy current testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of imperfections (ISO/DIS 10893-2:2009). 3) Under revision to become EN ISO 10893-3, Non-destructive testing of steel tubes
Part 3: Automated full peripheral flux leakage testing of seamless and welded (except submerged arc-welded) ferromagnetic steel tubes for the detection of longitudinal and/or transversal imperfections (ISO/DIS 10893-3:2009). SIST EN 10305-2:2010

(ISO 6892-1:2009) EN ISO 8492, Metallic materials — Tube — Flattening test (ISO 8492:1998) EN ISO 8493, Metallic materials — Tube — Drift expanding test (ISO 8493:1998) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 10020:2000, EN 10021:2006,
EN 10052:1993, EN 10266:2003 and the following apply. 3.1 employer organization for which a person works on a regular basis NOTE The employer can be either the tube manufacturer or a third party organization providing non-destructive testing (NDT) services. 3.2 manufacturer party to produce and to deliver tubes in accordance with this document NOTE Where tubes are delivered by a supplier, see EN 10021:2006, Clause 6. 3.3 imperfection discontinuity in the wall or on the pipe surfaces detectable by methods described in this document NOTE Imperfections with a size complying with the acceptance criteria specified in this document are considered to have no practical implication on the intended use of the product. 3.4 defect imperfection of a size not complying with the acceptance criteria specified in this document
4) Under revision to become EN ISO 10893-10, Non-destructive testing of steel tubes
Part 10: Automated full peripheral ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of longitudinal and/or transversal imperfections (ISO/DIS 10893-10:2009). SIST EN 10305-2:2010

4 Symbols For the purposes of this document, the symbols in EN 10266:2003 apply. NOTE For tubes specified by the outside diameter and by the inside diameter, "T" is the specified or the calculated wall thickness in this document. 5 Classification and designation 5.1 Classification In accordance with the classification system in EN 10020 the steel grades given in Table 2 are non-alloy quality steels. 5.2 Designation For the tubes covered by this document the steel designation consists of the number of this document (EN 10305-2) plus either: a) the steel name in accordance with EN 10027-1; or b) the steel number in accordance with EN 10027-2. 6 Information to be supplied by the purchaser 6.1 Mandatory information The following information shall be obtained by the manufacturer at the time of enquiry and order: a) quantity (mass or total length or number); b) term "tube"; c) dimensions (see 8.5); d) steel designation (see 5.2); e) delivery condition (see 7.2.2); f) type of tube length and, where applicable, the length (see 8.5.2). 6.2 Options A number of options are specified in this document and these are listed below. In the event that the purchaser does not indicate a wish to implement any of these options at the time of enquiry and order, the tubes shall be supplied in accordance with the basic specification (see 6.1). SIST EN 10305-2:2010

7.2.2 The tubes shall be supplied in one of the delivery conditions given in Table 1. 7.2.3 All non-destructive testing (NDT) activities shall be carried out by qualified and competent level 1, 2 and/or 3 personnel authorized to operate by the employer. The qualification shall be in accordance with EN 10256 or, at least, an equivalent to it. It is recommended that the level 3 personnel be certified in accordance with EN 473 or, at least, an equivalent to it. The operating authorization issued by the employer shall be in accordance with a written procedure. NDT operations shall be authorized by a 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 473 and EN 10256. Table 1 — Delivery conditions Designation Symbola
Description Cold drawn / hard +C No final heat treatment after final cold drawing. Cold drawn / soft +LC Final heat treatment is followed by a suitable drawing pass (limited
reduction of area). Cold drawn and stress relieved +SR After final cold drawing the tubes are stress relieved in a controlled atmosphere. Soft annealed +A After final cold drawing the tubes are annealed in a controlled atmosphere. Normalized +N After final cold drawing the tubes are normalized in a controlled atmosphere. a In accordance with EN 10027-1. 8 Requirements 8.1 General The tubes, when supplied in a delivery condition indicated in Table 1 and inspected in accordance with Clauses 9, 10 and 11, shall comply with the requirements of this document. SIST EN 10305-2:2010

Option 1: A steel grade not specified in this document with a maximum total content of alloying elements of
5 % and agreed chemical composition, mechanical properties and delivery condition, is specified. NOTE When subsequently welding tubes produced in accordance with this document account should be taken of the fact that the behaviour of the steel during and after welding is dependent not only on the steel composition and the delivery condition but also on the conditions of preparing for and carrying out the welding. Table 2 — Chemical composition (cast analysis)a Steel grade % by mass Steel name Steel number C max. Si max. Mn max. P max. S max. Altotal bmin. E155 1.0033 0,11 0,35 0,70 0,025 0,025 0,015 E195 1.0034 0,15 0,35 0,70 0,025 0,025 0,015 E235 1.0308 0,17 0,35 1,20 0,025 0,025 0,015 E275 1.0225 0,21 0,35 1,40 0,025 0,025 0,015 E355 1.0580 0,22 0,55 1,60 0,025 0,025 0,020 a Elements not included in this table (but see footnote b) shall not be intentionally added to the steel without the agreement of the purchaser, except for elements which may be added for the purposes of deoxidation and/or nitrogen binding. All appropriate measures shall be taken to prevent the addition of undesirable elements from scrap or other materials used in the steel making process. b This requirement is not applicable provided the steel contains a sufficient amount of other nitrogen binding elements, such as Ti, Nb or V. When using titanium, the manufacturer shall verify that (Al + Ti/2) ≥ 0,020. Additions of Nb, Ti and V are permitted at the discretion of the manufacturer. The content of these elements shall be reported. Option 2: The composition of the specified steel grade shall be such that it is suitable for hot-dip galvanizing (see e.g. EN ISO 1461 for guidance). Table 3 specifies the permissible deviation of product analysis from the specified limits on cast analysis given in Table 2.
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