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BSI Standards Publication BS EN 10305-42016 Steel tubes for precision applications Technical delivery conditions Part 4 Seamless cold drawn tubes for hydraulic and pneumatic power systemsBS EN 10305-42016 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN 10305-42016. It supersedes BS EN 10305-42011 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ISE/110, Steel Tubes, and Iron and Steel Fittings. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016 ISBN 978 0 580 90488 2 ICS 77.140.75 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2016. Amendments issued since publication Date Text affectedBS EN 10305-42016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10305-4 March 2016 ICS 77.140.75 Supersedes EN 10305-42011 English Version Steel tubes for precision applications - Technical delivery conditions - Part 4 Seamless cold drawn tubes for hydraulic and pneumatic power systems Tubes de prcision en acier - Conditions techniques de livraison - Partie 4 Tubes sans soudure tirs froid pour circuits hydrauliques et pneumatiques Przisionsstahlrohre - Technische Lieferbedingungen - Teil 4 Nahtlose kaltgezogene Rohre fr Hydraulik- und Pneumatik-Druckleitungen This European Standard 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 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 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, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG 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 10305-42016 EBS EN 10305-42016 EN 10305-42016 E 2 Contents Page European foreword . 4 1 Scope 5 2 Normative references 5 3 Terms and definitions . 6 4 Symbols . 7 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 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 soundness 10 8.5 Dimensions and tolerances 11 8.5.1 Outside diameter, inside diameter, wall thickness and eccentricity 11 8.5.2 Lengths . 11 8.5.3 Straightness 15 8.5.4 Preparation of ends . 15 9 Inspection . 15 9.1 Type of inspection 15 9.2 Inspection documents 15 9.2.1 Type of inspection documents . 15 9.2.2 Content of inspection documents . 15 9.3 Summary of inspection and testing . 16 10 Sampling 17 10.1 Test unit . 17 10.2 Preparation of samples and test pieces . 17 10.2.1 General . 17 10.2.2 Test pieces for the tensile test . 17 10.2.3 Test pieces for drift expanding test . 17 10.2.4 Test pieces for roughness measurement . 17 11 Test methods . 17 11.1 Tensile test . 17 11.2 Drift expanding test . 17 BS EN 10305-42016 EN 10305-42016 E 3 11.3 Dimensional inspection 18 11.4 Roughness measurement 18 11.5 Visual examination 18 11.6 Non-destructive testing 18 11.6.1 Testing on longitudinal imperfections 18 11.6.2 Leak tightness test 18 11.7 Retests, sorting and reprocessing. 18 12 Marking 18 13 Protection and packaging 19 13.1 Protection 19 13.2 Packaging . 19 Annex ZA informative Relationship between this European Standard and the Essential Requirements of Directive 2014/68/EU aimed to be covered . 20 Bibliography . 21 BS EN 10305-42016 EN 10305-42016 E 4 European foreword This document EN 10305-42016 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 given 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 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 10305-42011. In comparison with the previous edition, the following technical changes have been made a References were adapted; b The options were renumbered in such a way that now throughout all parts the number of options are the same; c Precision tubes will now be preferably ordered according to outer diameter and wall thickness; d The drift expanding test is now beside the tensile test the second test for the verification of the mechanical properties; e Editorial updates. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of Directive 2014/68/EU. For relationship with Directive 2014/68/EU, see informative Annex ZA, which is an integral part of this document. 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 tubes; 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 national 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, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 10305-42016 EN 10305-42016 E 5 1 Scope This European Standard specifies the technical delivery conditions for seamless cold drawn steel tubes of circular cross section used in hydraulic and pneumatic power systems. Tubes according to this document are characterized by having precisely defined tolerances on dimensions and a specified maximum surface roughness. The allowed pressure rates and upper temperatures are the responsibility of the customer in accordance with the state of the art and in application of the safety coefficients specified in the applicable regulations, codes or standards. Concerning the lower temperature range applicability the impact energy requirements are given at 0 C. NOTE Once this standard is published in the Official Journal of the European Union OJEU under Directive 2014/68/EU, presumption of conformity to the Essential Safety Requirements ESRs of Directive 2014/68/EU is limited to technical data of materials in this standard and does not presume adequacy of the material to a specific item of 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. 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 edition cited applies. For undated references, the latest edition of the referenced document including any amendments applies. EN 100202000, Definition and classification of grades of steel EN 100212006, General technical delivery conditions for steel products EN 10027-1, Designation systems for steels - Part 1 Steel names EN 10027-2, Designation systems for steels - Part 2 Numerical system EN 100521993, Vocabulary of heat treatment terms for ferrous products EN 101682004, Steel products - Inspection documents - List of information and description EN 102042004, Metallic products - Types of inspection documents EN 102662003, 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 - Conversion 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 6892-12016, Metallic materials - Tensile testing - Part 1 Method of test at room temperature ISO 6892-12016 BS EN 10305-42016 EN 10305-42016 E 6 EN ISO 8492, Metallic materials - Tube - Flattening test ISO 8492 EN ISO 84932004, Metallic materials - Tube - Drift-expanding test ISO 84931998 EN ISO 10893-12011, 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 leaktightness ISO 10893-12011 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 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 imperfections 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 114842009, Steel 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 100202000, EN 100212006, EN 100521993, EN 102662003 and the following apply. 3.1 employer organization for which 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 tubes are delivered by an intermediary, see EN 100212006, 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 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 Note 1 to entry Defects are considered to adversely affect or limit the intended use of the product. BS EN 10305-42016 EN 10305-42016 E 7 3.5 mother tube length of tube produced in the final cold drawing process 4 Symbols For the purposes of this document, the symbols in EN 102662003 apply. 5 Classification and designation 5.1 Classification In accordance with the classification system in EN 100202000, the steel grades given in Table 1 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 10305-4 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, preferably by outside diameter D and wall thickness T or other pair of dimensions, see 8.5.1.1 and Table 4; d steel designation see 5.2; e type of tube length see 8.5.2; f type of inspection certificate 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 his 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. Option 4 Surface condition for further processing see 8.4.1; Option 7 Reduced internal roughness of ≤ 2 μm see 8.4.2; BS EN 10305-42016 EN 10305-42016 E 8 Option 8 Measurement of surface roughness see 8.4.3; Option 12 Non-destructive testing for the detection of longitudinal imperfections see 8.4.6; Option 21 another specified length and/or tolerance see 8.5.2; Option 22 Reduced maximum deviation from straightness see 8.5.3; Option 28 Alternative marking see Clause 12; Option 31 Protection by phosphatization see 13.1; Option 33 Protection by galvanization and chromatization, type blue-white see 13.1; Option 34 Protection by galvanization and chromatization, type yellow see 13.1; Option 35 Protection by galvanization and chromatization, type olive green see 13.1; Option 36 Protection by galvanization and passivation type Cr VI free see 13.1; Option 37 Protection of tube ends see 13.1; Option 38 Unbundled tubes or specific method of packaging see 13.2. 6.3 Example of an order 1 000 m tubes
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BSEN10305 2016
BSI Standards Publication BS EN 10305-4:2016 Steel tubes for precision applications — Technical delivery conditions Part 4: Seamless cold drawn tubes for hydraulic and pneumatic power systemsBS EN 10305-4:2016 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN 10305-4:2016. It supersedes BS EN 10305-4:2011 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ISE/110, Steel Tubes, and Iron and Steel Fittings. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. © The British Standards Institution 2016. Published by BSI Standards Limited 2016 ISBN 978 0 580 90488 2 ICS 77.140.75 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2016. Amendments issued since publication Date Text affectedBS EN 10305-4:2016EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 10305-4 March 2016 ICS 77.140.75 Supersedes EN 10305-4:2011 English Version Steel tubes for precision applications - Technical delivery conditions - Part 4: Seamless cold drawn tubes for hydraulic and pneumatic power systems Tubes de précision en acier - Conditions techniques de livraison - Partie 4 : Tubes sans soudure étirés à froid pour circuits hydrauliques et pneumatiques Präzisionsstahlrohre - Technische Lieferbedingungen - Teil 4: Nahtlose kaltgezogene Rohre für Hydraulik- und Pneumatik-Druckleitungen This European Standard 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 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 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, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG 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 10305-4:2016 EBS EN 10305-4:2016 EN 10305-4:2016 (E) 2 Contents Page European foreword . 4 1 Scope 5 2 Normative references 5 3 Terms and definitions . 6 4 Symbols . 7 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 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 soundness 10 8.5 Dimensions and tolerances 11 8.5.1 Outside diameter, inside diameter, wall thickness and eccentricity 11 8.5.2 Lengths . 11 8.5.3 Straightness 15 8.5.4 Preparation of ends . 15 9 Inspection . 15 9.1 Type of inspection 15 9.2 Inspection documents 15 9.2.1 Type of inspection documents . 15 9.2.2 Content of inspection documents . 15 9.3 Summary of inspection and testing . 16 10 Sampling 17 10.1 Test unit . 17 10.2 Preparation of samples and test pieces . 17 10.2.1 General . 17 10.2.2 Test pieces for the tensile test . 17 10.2.3 Test pieces for drift expanding test . 17 10.2.4 Test pieces for roughness measurement . 17 11 Test methods . 17 11.1 Tensile test . 17 11.2 Drift expanding test . 17 BS EN 10305-4:2016 EN 10305-4:2016 (E) 3 11.3 Dimensional inspection 18 11.4 Roughness measurement 18 11.5 Visual examination 18 11.6 Non-destructive testing 18 11.6.1 Testing on longitudinal imperfections 18 11.6.2 Leak tightness test 18 11.7 Retests, sorting and reprocessing. 18 12 Marking 18 13 Protection and packaging 19 13.1 Protection 19 13.2 Packaging . 19 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of Directive 2014/68/EU aimed to be covered . 20 Bibliography . 21 BS EN 10305-4:2016 EN 10305-4:2016 (E) 4 European foreword This document (EN 10305-4:2016) 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 given 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 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 10305-4:2011. In comparison with the previous edition, the following technical changes have been made: a) References were adapted; b) The options were renumbered in such a way that now throughout all parts the number of options are the same; c) Precision tubes will now be preferably ordered according to outer diameter and wall thickness; d) The drift expanding test is now beside the tensile test the second test for the verification of the mechanical properties; e) Editorial updates. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of Directive 2014/68/EU. For relationship with Directive 2014/68/EU, see informative Annex ZA, which is an integral part of this document. 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 tubes; — 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 national 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, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 10305-4:2016 EN 10305-4:2016 (E) 5 1 Scope This European Standard specifies the technical delivery conditions for seamless cold drawn steel tubes of circular cross section used in hydraulic and pneumatic power systems. Tubes according to this document are characterized by having precisely defined tolerances on dimensions and a specified maximum surface roughness. The allowed pressure rates and upper temperatures are the responsibility of the customer in accordance with the state of the art and in application of the safety coefficients specified in the applicable regulations, codes or standards. Concerning the lower temperature range applicability the impact energy requirements are given at 0 °C. NOTE Once this standard is published in the Official Journal of the European Union (OJEU) under Directive 2014/68/EU, presumption of conformity to the Essential Safety Requirements (ESRs) of Directive 2014/68/EU is limited to technical data of materials in this standard and does not presume adequacy of the material to a specific item of 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. 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 edition 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 steels - 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 10168:2004, Steel products - Inspection documents - List of information and description EN 10204:2004, Metallic products - Types of inspection 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 - Conversion 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 6892-1:2016, Metallic materials - Tensile testing - Part 1: Method of test at room temperature (ISO 6892-1:2016) BS EN 10305-4:2016 EN 10305-4:2016 (E) 6 EN ISO 8492, Metallic materials - Tube - Flattening test (ISO 8492) EN ISO 8493:2004, Metallic materials - Tube - Drift-expanding test (ISO 8493:1998) EN ISO 10893-1:2011, 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 leaktightness (ISO 10893-1:2011) 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 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 imperfections (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 11484:2009, Steel products - Employer's 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 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 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 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 Note 1 to entry: Defects are considered to adversely affect or limit the intended use of the product. BS EN 10305-4:2016 EN 10305-4:2016 (E) 7 3.5 mother tube length of tube produced in the final cold drawing process 4 Symbols For the purposes of this document, the symbols in EN 10266:2003 apply. 5 Classification and designation 5.1 Classification In accordance with the classification system in EN 10020:2000, the steel grades given in Table 1 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 10305-4) 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, preferably by outside diameter D and wall thickness T (or other pair of dimensions), (see 8.5.1.1 and Table 4); d) steel designation (see 5.2); e) type of tube length (see 8.5.2); f) type of inspection certificate (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 his 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). • Option 4: Surface condition for further processing (see 8.4.1); • Option 7: Reduced internal roughness of ≤ 2 μm (see 8.4.2); BS EN 10305-4:2016 EN 10305-4:2016 (E) 8 • Option 8: Measurement of surface roughness (see 8.4.3); • Option 12: Non-destructive testing for the detection of longitudinal imperfections (see 8.4.6); • Option 21: another specified length and/or tolerance (see 8.5.2); • Option 22: Reduced maximum deviation from straightness (see 8.5.3); • Option 28: Alternative marking (see Clause 12); • Option 31: Protection by phosphatization (see 13.1); • Option 33: Protection by galvanization and chromatization, type blue-white (see 13.1); • Option 34: Protection by galvanization and chromatization, type yellow (see 13.1); • Option 35: Protection by galvanization and chromatization, type olive green (see 13.1); • Option 36: Protection by galvanization and passivation (type Cr (VI) free) (see 13.1); • Option 37: Protection of tube ends (see 13.1); • Option 38: Unbundled tubes or specific method of packaging (see 13.2). 6.3 Example of an order 1 000 m tubes
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