SIST EN 10255:2004+A1:2007
(Main)Non-Alloy steel tubes suitable for welding and threading - Technical delivery conditions
Non-Alloy steel tubes suitable for welding and threading - Technical delivery conditions
This document specifies the requirements for circular non-alloy steel tubes suitable for welding and threading and provides a number of options for the finish of tube ends and coatings. This document covers tubes of specified outside diameter 10,2 mm to 165,1 mm (thread size 1/8 to 6) in two series, medium and heavy, and three types of designated thicknesses.
NOTE Tubes manufactured according to this document can be used for the conveyance of fluids as well as for other applications.
Rohre aus unlegiertem Stahl mit Eignung zum Schweissen und Gewindeschneiden - Technische Lieferbedingungen
Dieses Dokument legt die Anforderungen an kreisförmige Rohre aus unlegiertem Stahl mit Eignung zum Schweißen und Gewindeschneiden fest und sieht eine Reihe von Optionen für die Rohrendenbeschaffenheit und für Beschichtungen und Überzüge vor. Dieses Dokument gilt für Rohre mit 10,2 mm bis 165,1 mm Nenn-Außendurchmesser (Gewindegröße 1/8 bis 6) für zwei Reihen, mittlere und schwere Reihe, und drei weitere Rohrarten mit festgelegter Wanddicke.
ANMERKUNG Nach diesem Dokument gefertigte Rohre können für den Transport von flüssigen und gasförmigen Medien und für andere Anwendungsgebiete verwendet werden.
Tubes en acier non-allié filetables et soudables - Conditions techniques de livraison
Le présent document spécifie les prescriptions relatives aux tubes ronds en acier non allié soudables et filetables et fournit un certain nombre d’options relatives à la finition des extrémités des tubes et à leurs revêtements. Le présent document s'applique aux tubes dont le diamètre extérieur spécifié est compris entre 10,2 mm et 165,1 mm (dimension de filetage 1/8 à 6), appartenant à deux séries, moyenne et forte et trois types d'épaisseurs données.
NOTE Les tubes fabriqués conformément au présent document peuvent être utilisés pour le transport de fluides de même que pour d’autres applications
Nelegirane jeklene cevi za varjenje in vrezovanje navojev – Tehnični dobavni pogoji
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Non-Alloy steel tubes suitable for welding and threading - Technical delivery conditionsSRJRMLTubes en acier non-allié filetables et soudables - Conditions techniques de livraisonRohre aus unlegiertem Stahl mit Eignung zum Schweissen und Gewindeschneiden - Technische LieferbedingungenTa slovenski standard je istoveten z:EN 10255:2004+A1:2007SIST EN 10255:2004+A1:2007en;fr;de23.040.10Železne in jeklene ceviIron and steel pipesICS:SIST EN 10255:20041DGRPHãþDSLOVENSKI
STANDARDSIST EN 10255:2004+A1:200701-junij-2007
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 10255:2004+A1
April 2007 ICS 23.040.10
Supersedes EN 10255:2004English Version
Non-Alloy steel tubes suitable for welding and threading - Technical delivery conditions
Tubes en acier non-allié filetables et soudables - Conditions techniques de livraison
Rohre aus unlegiertem Stahl mit Eignung zum Schweißen und Gewindeschneiden - Technische Lieferbedingungen This European Standard was approved by CEN on 27 May 2004 and includes Amendment 1 approved by CEN on on 5 March 2007.
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.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10255:2004+A1:2007: E
EN 10255:2004+A1:2007 (E) 2 Contents page Foreword.4 1 Scope.5 2 Normative references.5 3 Terms and definitions.6 4 Classification and designation.6 5 Information to be !!!!obtained from"""" the purchaser.6 5.1 Mandatory information.6 5.2 Options.6 5.3 Examples of ordering.7 5.3.1 By outside diameter and thickness.7 5.3.2 By thread size and series.7 6 Manufacturing process.7 6.1 Steelmaking process.7 6.2 Tube manufacturing process.7 7 Delivery conditions.8 7.1 General.8 7.2 Alternative finishes and protection of the tube ends.8 7.3 Suitability for hot dip galvanizing.8 7.4 Hot dip galvanized condition.8 8 Requirements.8 8.1 General.8 8.2 Chemical composition and mechanical properties.9 8.3 Appearance.9 8.4 Dimensions, masses and tolerances.9 8.5 !!!!Leak tightness.11 8.6 Dangerous substances.11 8.7 Reaction to fire.12 9 Inspection.12 9.1 Type of inspection.12 9.2 Inspection documents.12 9.3 Tensile test.12 9.4 Bend test.12 9.5 Flattening test.13 9.6 Leak tightness test.13 9.7 Dimensional inspection.13 9.8 Visual examination.13 10 Marking.13 11 Temporary protective coating.14 12 !!!!Evaluation of conformity.14 12.1 General.14 12.2 Initial type testing (ITT).14 12.2.1 General.14 12.2.2 Characteristics.15 12.2.3 Product families.15 12.2.4 Use of historical data.15 12.2.5 Deemed to satisfy’ provisions and use of reference tabulated data.15
EN 10255:2004+A1:2007 (E) 3 12.2.6 Sampling.15 12.3 Factory production control (FPC).15 12.3.1 General.15 12.3.2 Equipment.16 12.3.3 Raw materials and components.16 12.3.4 Product testing and evaluation.16 12.3.5 Inspection.16 12.3.6 Non-conforming products.16 Annex A (informative)
Correlation between specified outside diameter, thread size, and nominal diameter.17 Annex B (normative)
Types of tubes with wall thickness different from medium and heavy series.18 B.1 General.18 B.2 Requirements.18 B.3 Marking.18 Annex ZA (informative)
!!!!Clauses of this European Standard addressing the provisions of the EC Construction Products Directive for applications covered by Mandate M/131.20 ZA.1 Scope and relevant characteristics.20 ZA.2 Procedure for attestation of conformity of pipes.21 ZA.2.2 Declaration of conformity.22 ZA.3 CE marking and labelling.23
EN 10255:2004+A1:2007 (E) 4 Foreword This document (EN 10255:2004+A1:2007) has been prepared by Technical Committee ECISS/TC 29 “Steel tubes and fittings for steel tubes”, the secretariat of which is held by UNI. This document shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2007 and conflicting national standards shall be withdrawn at the latest by October 2007. This document includes Amendment 1, approved by CEN on 2007-03-05. This document supersedes EN 10255:2004. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ". 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 EU Directive 89/106/EEC. For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. This European Standard has been derived, with modifications, from ISO 65 “Carbon steel tube suitable for screwing in accordance with ISO 7/1”. 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EN 10255:2004+A1:2007 (E) 5
1 Scope This document specifies the requirements for circular non-alloy steel tubes suitable for welding and threading and provides a number of options for the finish of tube ends and coatings.
This document covers tubes of specified outside diameter 10,2 mm to 165,1 mm (thread size 1/8 to 6) in two series, medium and heavy, and three types of designated thicknesses. NOTE Tubes manufactured according to this document can be used for the conveyance of fluids as well as for other applications. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. The requirements of this European Standard rule when they differ from those in the standards and documents referred to below: EN 10002-1, Metallic materials - Tensile testing - Part 1: Method of test at ambient temperature EN 10020, Definition and classification of grades of steel EN 10021, !General technical delivery for steel products" EN 10027-1, Designation systems for steel - !Part 1: Steel names" EN 10027-2, Designation systems for steels - Part 2: Numerical system EN 10204, Metallic products - Types of inspection documents !deleted text" EN 10240, Internal and/or external protective coatings for steel tubes - Specification for hot dip galvanized coatings applied in automatic plants EN 10241, Steel threaded pipe fittings EN 10242, Threaded pipe fittings in malleable cast iron EN 10246-1, Non destructive testing of steel tubes - Part 1: Automatic electromagnetic testing of seamless and welded (except submerged arc welded) ferromagnetic steel tubes for verification of hydraulic leak-tightness EN 10226-1 Pipe threads where pressure-tight joints are made on the threads - Part 1: Taper external threads and parallel internal threads - Dimensions, tolerances and designation !EN 10226-2", Pipe threads where pressure-tight joints are made on the threads - Part 2: Taper external threads and taper internal threads - Dimensions, tolerances and designation EN 10266:2003, Steel tubes, fittings and structural hollow sections - Symbols and definitions of terms for use in product standards EN ISO 1461, Hot dip galvanized coatings on fabricated iron and steel articles - Specifications and test methods (ISO 1461:1999)
EN 10255:2004+A1:2007 (E) 6 EN ISO 2566-1, Steel - Conversion of elongation values - Part 1: Carbon and low alloy steels (ISO 2566-1:1984) !EN ISO 8491, Metallic materials - Tube (in full section) - Bend test (ISO 8491:1998) EN ISO 8492, Metallic materials - Tube - Flattening test (ISO 8492:1998) EN ISO 9001, Quality management systems - Requirements (ISO 9001:2000)" 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 10020:2000, EN 10021:1993,
EN 10266:2003 and the following apply. 3.1 Series and Types
designation used in conjunction with the diameter to define the thickness and the mass per unit length of the tube 3.2 Bare tube tube whose surface is as manufactured without subsequent coating 4 Classification and designation The steel specified in this document is classified as a non-alloy quality steel in accordance with EN 10020. The steel name S195 T has been established in accordance with EN 10027-1. The steel number 1.0026… has been established in accordance with EN 10027-2. 5 Information to be !!!!obtained from"""" the purchaser 5.1 Mandatory information The following information shall be !obtained from" the purchaser at the time of enquiry and order: a) Quantity (mass or total length or number of tubes); b) Seamless or Welded tube manufacturing process (S or W); c) The term “tube”; d) The number of this European Standard (EN 10255); e) Specified outside diameter (D) in millimetres or thread size (R) (see Table 2 or Annex B); f) Wall thickness (T) in millimetres or series (M or H) (see Table 2) or type (L or L1 or L2) (see Annex B). 5.2 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 5.1). 1) Threaded ends (see 7.2); 2) Tube with socket (see 7.2);
EN 10255:2004+A1:2007 (E) 7 3) Socket type to be specified (see 7.2); 4) Closed ends to prevent ingress of foreign matter (see 7.2); 5) Thread varnish or thread protection (see 7.2); 6) Suitable for galvanizing to EN ISO 1461, or to EN 10240 coating quality other than A.1 (see 7.3); 7) Suitable for galvanizing to EN 10240 coating quality A.1 (see 7.3); 8) Hot dip galvanized to EN ISO 1461 (see 7.4); 9) Hot dip galvanized to EN 10240, coating quality to be specified (see 7.4); 10) Delivery length (see 8.4.10); 11) Inspection document type 2.2 (see 9.2); 12) Temporary protective coating (see Clause 11). 5.3 Examples of ordering 5.3.1 By outside diameter and thickness To order 6000 metres of seamless tubes in accordance with EN 10255, with 26.9 mm outside diameter, 2.6 mm wall thickness, galvanized according to EN 10240 - coating quality A.1, threaded. EXAMPLE 6000 m - S tubes - 26,9 x 2,6 - EN 10255 - Options 1 and 9: A.1. 5.3.2 By thread size and series To order 80 tonnes of welded tubes in accordance with EN 10255, with thread size 2, series medium, in standard length of 6,4 m with caps or plugs fitted to the ends. EXAMPLE 80 t – W tubes – 2 – M - EN 10255 - Options 4 and 10: 6.4 m. 6 Manufacturing process 6.1 Steelmaking process The steelmaking process is at the discretion of the manufacturer. The steel shall be fully killed. 6.2 Tube manufacturing process The tubes shall be manufactured by a seamless (S) or longitudinally welded (W) process, as specified (see 5.1 b). Cold formed tubes of Type L shall be heat treated (see B.2). The other series and types of tubes may be heat treated at the discretion of the manufacturer Tubes shall not include welds used to join lengths of strip prior to forming the tube.
EN 10255:2004+A1:2007 (E) 8 7 Delivery conditions 7.1 General Unless otherwise specified (see 7.2 to 7.4) the tubes shall be supplied bare with plain ends.
The tube ends shall be cut nominally square to the axis of the tube and shall be free from excessive burrs. 7.2 Alternative finishes and protection of the tube ends Alternative types of end finish may be obtained by selecting from the following options: Option 1: Tube ends shall be supplied with external taper threads in accordance with EN 10226-1 / EN 10226-2. Option 2: Tube shall be supplied with one socket per tube.
The socket shall be in accordance with EN 10241 or EN 10242 and unless Option 3 is requested the choice of standard and the socket type shall be at the discretion of the manufacturer.
The purchaser shall be informed to which standard and of which type of socket is to be supplied. Option 3: The purchaser shall specify the standard, and which type of socket is to be supplied in accordance with Option 2. NOTE Purchasers who require tubes to be threaded and supplied with a socket should specify either Options 1 and 2 or Options 1 and 3. Protection, to prevent ingress of foreign matter or physical damage or rusting of the threads, may be obtained by selecting from the following options: Option 4: One cap or plug fitted to each tube end to prevent ingress of foreign matter; the type is at the discretion of the manufacturer. Option 5: The tube shall be supplied with the thread varnished or with thread protection. The type of protection is at the discretion of the manufacturer. 7.3 Suitability for hot dip galvanizing Option 6: The tubes shall be suitable for galvanizing to EN ISO 1461 or to EN 10240 coating quality A.2, A.3, B.1, B.2 or B.3. Option 7: The tubes shall be suitable for galvanizing to EN 10240 coating quality A.1 (see 8.4.9). 7.4 Hot dip galvanized condition Option 8: The tubes shall be supplied galvanized according to EN ISO 1461. Option 9: The tubes shall be supplied galvanized according to EN 10240; the coating quality shall be specified by the purchaser at the time of enquiry and order. 8 Requirements 8.1 General The tubes when inspected in accordance with Clause 9 shall conform to the requirements of this document. In addition to the requirements of this document, the general technical delivery requirements specified in EN 10021 shall apply.
EN 10255:2004+A1:2007 (E) 9 8.2 Chemical composition and mechanical properties 8.2.1 The chemical composition and the mechanical properties shall conform to the requirements of Table 1. Table 1 — Chemical composition (cast analysis) and mechanical properties Mechanical Properties Steel Grade Chemical composition % Upper Yield strength Tensile strength Elongation C Mn P S ReH min. Rm A min. Steel Name Steel Number max max max max (MPa) (MPa) % S 195T 1.0026 0,20 1,40 0,035 0,030 195 320 to 520 20
NOTE The steel specified in this document is weldable, however when subsequently welding tubes produced according to 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 but also on the conditions of preparing for and carrying out the welding. 8.2.2 Tubes shall be suitable for cold bending and threading. NOTE When bending tubes produced in accordance with this document, appropriate tooling should be correctly used. 8.3 Appearance 8.3.1 The tubes shall be free from such external and internal surface defects that can be detected by visual examination. 8.3.2 The internal and external surface finish of the tubes shall be typical of the manufacturing process and, where applicable, the heat treatment employed.
The finish and surface condition shall be such that any surface imperfections or marks requiring dressing can be identified. 8.3.3 It shall be permissible to dress, only by grinding or machining, surface imperfections provided that, after doing so, the tube thickness in the dressed area is not less than the specified minimum wall thickness.
All dressed areas shall blend smoothly into the contour of the tube. 8.3.4 Surface imperfections which encroach on the specified minimum wall thickness shall be considered defects and tubes containing these shall be deemed not to conform to this document. 8.4 Dimensions, masses and tolerances 8.4.1 Specified outside diameters (D), wall thicknesses (T) and masses per unit length Medium and Heavy series tubes are listed in Table 2.
EN 10255:2004+A1:2007 (E) 10
Table 2 — Dimensions, diameter tolerance and mass per unit length Specified outside diametera Thread Sizea Outside diameter H M Heavy series Medium series Wall thickness Mass per unit length of bare tube Wall thickness Mass per unit length of bare tube D R max. min. T Plain end Socketed T Plain end Threaded and socketed (mm)
(mm) (mm) (mm) (kg/m) (kg/m) (mm) (kg/m) (kg/m) 10,2 1/8 10,6 9,8 2,6 0,487 0,490 2,0 0,404 0,407 13,5 1/4 14,0 13,2 2,9 0,765 0,769 2,3 0,641 0,645 17,2 3/8 17,5 16,7 2,9 1,02 1,03 2,3 0,839 0,845 21,3 1/2 21,8 21,0 3,2 1,44 1,45 2,6 1,21 1,22 26,9 3/4 27,3 26,5 3,2 1,87 1,88 2,6 1,56 1,57 33,7 1 34,2 33,3 4,0 2,93 2,95 3,2 2,41 2,43 42,4 1 1/4 42,9 42,0 4,0 3,79 3,82 3,2 3,10 3,13 48,3 1 1/2 48,8 47,9 4,0 4,37 4,41 3,2 3,56 3,60 60,3 2 60,8 59,7 4,5 6,19 6,26 3,6 5,03 5,10 76,1 2 1/2 76,6 75,3 4,5 7,93 8,05 3,6 6,42 6,54 88,9 3 89,5 88,0 5,0 10,3 10,5 4,0 8,36 8,53 114,3 4 115,0 113,1 5,4 14,5 14,8 4,5 12,2 12,5 139,7 5 140,8 138,5 5,4 17,9 18,4 5,0 16,6 17,1 165,1 6 166,5 163,9 5,4 21,3 21,9 5,0 19,8 20,4 a For relationship between specified outside diameter (D), thread size (R) and nominal diameter (DN), see Annex A. T = specified wall thickness.
8.4.2 Specified outside diameters (D), wall thicknesses (T) and masses per unit length for tube Types L, L1 and L2 are listed in Table B.1, B.2 and B.3 respectively. 8.4.3 The tolerance on out of roundness is included in the diameter tolerance. 8.4.4 For welded tubes the tolerance on wall thickness is: ± 10 % .for M and H series and Type L ; – 8 % with the plus tolerance limited by the mass tolerance,
for Types L1 and L2. 8.4.5 The mass tolerance on welded tubes is: ± 7,5 % on bundles of 10 tons or more, for M and H series and Type L ; +10%
-8% on individual tubes for Types L1 and L2.
EN 10255:2004+A1:2007 (E) 11 8.4.6 For seamless tubes the tolerance on wall thickness is ± 12,5 %. The maximum tolerance does not apply if the actual weight of a bundle does not exceed the theoretical weight, calculated from the nominal mass per unit length (see Tables 2, B1, B2, or B3, as appropriate), by more than + 7,5 %. 8.4.7 The external weld bead of electric welded tubes shall be trimmed to an essentially flush condition. 8.4.8 The height of the internal weld seam of welded tubes shall not exceed 60 % of the specified wall thickness (T). 8.4.9 When welded tubes are specified as suitable for galvanizing to EN 10240 quality A.1 (Option 7) or galvanized to EN 10240 quality A.1 (Option 9), the internal weld bead shall have no sharp edges or porosity.
The height of the internal weld seam shall not exceed 0,3 mm + 0,05 T and the internal weld seam profile shall blend smoothly into the contour of the tube. 8.4.10 Unless Option 10 is specified, tubes shall be delivered in one standard length per order item, either 6 m or 6,4 m at the discretion of the manufacturer. Option 10: The tubes shall be supplied in the standard length, either 6 m or 6,4 m, or an alternative type of length given in Table 3 as specified by the purchaser at the time of enquiry and order. Table 3 — Type of length and tolerance Length (L) Tolerance Type of length (m) Welded Seamless Standard 6 or 6,4 15050+⋅− mm ± 500 mm Random 4 ≤ L ≤ 16 with a range of 2 m per order item Up to 10 % of tubes supplied may be below the minimum length ordered, but not shorter than 75 % of the minimum range length L ≤ 6 100+ mm 6 < L ≤ 12 150+ mm Exact L >12 agreementby⋅+0
8.4.11 For tubes with a specified outside diameter equal to or greater than 33,7 mm, the deviation from straightness over any tube length L, where L is the manufacturer’s delivered length, shall not exceed 0,002 L. NOTE It is not possible to specify a straightness requirement for this product with D less than 33,7 mm due to bending during processing and subsequent handling, however they should be reasonably straight. 8.5 !Leak tightness All tubes shall be leak tight. Leak tightness shall be demonstrated either by a hydrostatic test or by an electromagnetic test in accordance with 9.6. 8.6 Dangerous substances Tubes, produced in accordance with this European Standard, shall not release any dangerous substances in excess of the maximum permitted levels specified in the relevant European Standard for the material or permitted in the national regulations of the member state of destination.
EN 10255:2004+A1:2007 (E) 12 8.7 Reaction to fire In accordance with Commission Decision 96/303/EEC of 4 October 1996 amended by Council Decision of
28 September 2000 the material is Class A1 and therefore does not require to be tested to reaction to fire." 9 Inspection 9.1 Type of inspection Conformity to the requirements of the order shall be checked by non specific inspection and testing in accordance with EN 10021. 9.2 Inspection documents Unless Option 11 is specified, tubes shall be supplied with an inspection document type 2.1, in accordance with EN 10204. Option 11: The tubes shall be supplied with an inspection document type 2.2, in accordance with EN 10204. 9.3 Tensile test T
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.