1、BSI Standards PublicationBS EN 10305-2:2016Steel tubes for precisionapplications Technicaldelivery conditionsPart 2: Welded cold drawn tubesBS EN 10305-2:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 10305-2:2016.It supersedes BS EN 10305-2:2010 which is
2、withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ISE/110, Steel Tubes, and Iron and Steel Fittings.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovi
3、sions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016. Published by BSI StandardsLimited 2016ISBN 978 0 580 90490 5ICS 77.140.75Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published
4、under the authority of theStandards Policy and Strategy Committee on 30 April 2016.Amendments issued since publicationDate Text affectedBS EN 10305-2:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10305-2 March 2016 ICS 77.140.75 Supersedes EN 10305-2:2010English Version Steel tubes for pr
5、ecision applications - Technical delivery conditions - Part 2: Welded cold drawn tubes Tubes de prcision en acier - Conditions techniques de livraison - Partie 2 : Tubes souds tirs froid Przisionsstahlrohre - Technische Lieferbedingungen -Teil 2: Geschweite kaltgezogene Rohre This European Standard
6、was approved by CEN on 18 January 2016. 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
7、 national standards may be obtained on application to the CEN-CENELEC 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
8、language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Gr
9、eece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG
10、 CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10305-2:2016 EBS EN 10305-2:2016EN 10305-2:2016 (E) 2 Contents Page European foreword . 4 1 Scope 5 2 Normative
11、references 5 3 Terms and definitions . 6 4 Symbols . 6 5 Classification and designation 7 5.1 Classification . 7 5.2 Designation 7 6 Information to be supplied by the purchaser . 7 6.1 Mandatory information 7 6.2 Options 7 6.3 Example of an order . 8 7 Manufacturing process 8 7.1 Steelmaking process
12、 8 7.2 Tube manufacture and delivery conditions 8 8 Requirements . 9 8.1 General 9 8.2 Chemical composition . 9 8.3 Mechanical properties 10 8.4 Appearance and internal soundness. 11 8.5 Dimensions and tolerances 12 8.5.1 Outside diameter, inside diameter, wall thickness and eccentricity 12 8.5.2 Le
13、ngths . 15 8.5.3 Straightness 16 8.5.4 Preparation of ends . 17 9 Inspection . 17 9.1 Types of inspection 17 9.2 Inspection documents 17 9.2.1 Types of inspection documents. 17 9.2.2 Content of inspection documents . 17 9.3 Summary of inspection and testing . 18 10 Sampling 18 10.1 Test unit . 18 10
14、.2 Preparation of samples and test pieces . 19 10.2.1 Location, orientation and preparation of samples and test pieces for mechanical tests . 19 10.2.2 Test pieces for roughness measurement . 19 11 Test methods . 19 11.1 Tensile test . 19 11.2 Flattening test 19 11.3 Drift expanding test . 20 11.4 D
15、imensional inspection . 20 11.5 Roughness measurement 20 BS EN 10305-2:2016EN 10305-2:2016 (E) 3 11.6 Visual examination 21 11.7 Non-destructive testing 21 11.7.1 Testing for longitudinal imperfections . 21 11.7.2 Leak tightness 21 11.8 Retests, sorting and reprocessing 21 12 Marking 21 13 Protectio
16、n and packaging 21 Bibliography . 23 BS EN 10305-2:2016EN 10305-2:2016 (E) 4 European foreword This document (EN 10305-2:2016) has been prepared by Technical Committee ECISS/TC 110 “Steel tubes and iron and steel fittings”, the secretariat of which is held by UNI. This European Standard shall be giv
17、en the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2016 and conflicting national standards shall be withdrawn at the latest by September 2016. Attention is drawn to the possibility that some of the elements of this document
18、may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 10305-2:2010. In comparison with the previous edition, the following technical changes have been made: a) References were adapted; b) The o
19、ptions were renumbered in such a way that now throughout all parts the number of options are the same; c) Editorial updates. EN 10305, Steel tubes for precision applications Technical delivery conditions, consists of the following parts: Part 1: Seamless cold drawn tubes Part 2: Welded cold drawn tu
20、bes Part 3: Welded cold sized tubes Part 4: Seamless cold drawn tubes for hydraulic and pneumatic power systems Part 5: Welded cold sized square and rectangular tubes Part 6: Welded cold drawn tubes for hydraulic and pneumatic power systems According to the CEN-CENELEC Internal Regulations, the nati
21、onal standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lit
22、huania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 10305-2:2016EN 10305-2:2016 (E) 5 1 Scope This European Standard specifies the technical delivery conditions for welded cold drawn steel tub
23、es of circular cross section for precision applications with specified outside diameter D 150 mm. This document may also be applied to other types of cross section. Tubes according to this document are characterized by having precisely defined tolerances on dimensions and a specified maximum surface
24、 roughness. Typical fields of application are in the automotive, furniture and general engineering industries. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the ed
25、ition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 10020:2000, Definition and classification of grades of steel EN 10021:2006, General technical delivery conditions for steel products EN 10027-1, Designation systems for s
26、teels - Part 1: Steel names EN 10027-2, Designation systems for steels - Part 2: Numerical system EN 10052:1993, Vocabulary of heat treatment terms for ferrous products EN 10168, Steel products - Inspection documents - List of information and description EN 10204, Metallic products - Types of inspec
27、tion documents EN 10266:2003, Steel tubes, fittings and structural hollow sections - Symbols and definitions of terms for use in product standards EN ISO 377, Steel and steel products - Location and preparation of samples and test pieces for mechanical testing (ISO 377) EN ISO 2566-1, Steel - Conver
28、sion of elongation values - Part 1: Carbon and low alloy steels (ISO 2566-1) EN ISO 4287, Geometrical product specifications (GPS) - Surface texture: Profile method - Terms, definitions and surface texture parameters (ISO 4287) EN ISO 6892-1, Metallic materials - Tensile testing - Part 1: Method of
29、test at room temperature (ISO 6892-1) EN ISO 8492, Metallic materials - Tube - Flattening test (ISO 8492) EN ISO 8493, Metallic materials - Tube - Drift-expanding test (ISO 8493) EN ISO 10893-1, Non-destructive testing of steel tubes - Part 1: Automated electromagnetic testing of seamless and welded
30、 (except submerged arc-welded) steel tubes for the verification of hydraulic leaktightness (ISO 10893-1) BS EN 10305-2:2016EN 10305-2:2016 (E) 6 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
31、tubes for the detection of imperfections (ISO 10893-2) 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 transverse im
32、perfections (ISO 10893-3) 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 transverse imperfections (ISO 10893-10) ISO 11484, Steel
33、 products - Employers qualification system for non-destructive testing (NDT) personnel 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
34、 a person works on a regular basis Note 1 to entry: The employer can be either the tube manufacturer or a third party organization providing services, such as non-destructive testing (NDT). 3.2 manufacturer party to produce and to deliver tubes in accordance with this document Note 1 to entry: Where
35、 tubes are delivered by an intermediary, 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 1 to entry: Imperfections with a size complying with the acceptance criteria specified in this document are c
36、onsidered 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 Note 1 to entry: Defects are considered to adversely affect or limit the intended use of the product. 3.5 parent coil
37、 coil originating from the hot rolling process prior to any further operation (pickling, slitting, cold rolling or coating) 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 specifi
38、ed or the calculated wall thickness in this document. BS EN 10305-2:2016EN 10305-2:2016 (E) 7 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 cov
39、ered 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 i
40、nformation 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
41、.5.2); g) type of inspection document (see 9.1). 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 acco
42、rdance with the basic specification (see 6.1). Option 1: specification of a steel grade not specified in this document (see 8.2); Option 3: suitability for hot-dip galvanizing (see 8.2); Option 4: surface condition for further processing (see 8.4.1); Option 8: measurement of surface roughness (see 8
43、.4.3); Option 9: specific surface roughness (see 8.4.3); Option 10: tube surfaces free from not easily removable substances (see 8.4.6); Option 12: non-destructive testing for the detection of longitudinal imperfections (see 8.4.7); BS EN 10305-2:2016EN 10305-2:2016 (E) 8 Option 13: non-destructive
44、testing for verification of leak-tightness (see 8.4.7); Option 15: specification of a cross section other than circular (see 8.5.1.1); Option 16: reduced diameter tolerances (see 8.5.1.2); Option 17: unilateral diameter tolerances (see 8.5.1.2); Option 18: reduced eccentricity (see 8.5.1.3); Option
45、19: reduced wall thickness tolerance (see 8.5.1.4); Option 20: unilateral wall thickness tolerance (see 8.5.1.4); Option 22: reduced maximum deviation from straightness (see 8.5.3); Option 23: specified end finishing (see 8.5.4); Option 25: flattening or drift expanding test for delivery condition +
46、A or +N (see Table 8); Option 26: test unit with tubes from one cast only (see 10.1); Option 28: alternative marking (see Clause 12); Option 29: delivery without corrosion protection (see Clause 13); Option 30: specified corrosion protection (see Clause 13); Option 38: unbundled tubes or specific me
47、thod of packaging (see Clause 13). 6.3 Example of an order 12 000 m tube with an outside diameter of D = 60 mm and an inside diameter of d = 56 mm in accordance with this document, made of steel grade E235 in the normalized condition, delivered in random lengths, with a 3.1 inspection certificate in
48、 accordance with EN 10204: 12 000 m tube D 60 x d 56 EN 10305-2 E235+N random length inspection certificate 3.1 7 Manufacturing process 7.1 Steelmaking process The steelmaking process is at the discretion of the manufacturer with the exception that the open hearth (Siemens-Martin) process shall not
49、be employed unless in combination with a secondary steelmaking or ladle refining process. Steels shall be fully killed. NOTE This excludes the use of rimming, balanced or semi-killed steel. 7.2 Tube manufacture and delivery conditions 7.2.1 The tubes shall be manufactured from electric welded hollows by cold drawing. The tubes shall not contain strip end welds. 7.2.2 The tubes shall be supplied in one of the delivery conditions given in Table 1. BS EN 10305-2:2016EN 10305-2:2016 (E) 9 7.2.3 All non-dest
