1、July 2007DEUTSCHE NORM English price group 13No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.040.10!,z)+“9870608www
2、.din.deDDIN EN 10255Non-alloy steel tubes suitable for welding and threading Technical delivery conditions (includes Amendment A1:2007)English version of DIN EN 10255:2007-07Rohre aus unlegiertem Stahl mit Eignung zum Schweien und Gewindeschneiden Technische Lieferbedingungen (enthlt nderung A1:2007
3、)Englische Fassung DIN EN 10255:2007-07SupersedesDIN EN 10255:2004-11www.beuth.deDocument comprises 27 pages09.07DIN EN 10255:2007-07 2 National foreword This standard has been prepared by ECISS/TC 29 “Steel tubes and fittings for steel tubes”, the Secretariat of which is held by UNI (Italy), and in
4、corporates Amendment A1:2007. The responsible German body involved in its preparation was the Normenausschuss Eisen und Stahl (Steel and Iron Standards Committee), Technical Committee 09/1 Rohre aus allgemeinen Bausthlen oder Feinkorn-bausthlen. The modification of this standard was considered neces
5、sary to meet the requirements of Mandate M/131 given to CEN by the European Commission under the EU Construction Products Directive (89/106/EEC). Amendments This standard differs from DIN EN 10255:2004-11 as follows: a) The foreword now contains a reference to the EU Construction Products Directive
6、(89/106/EEC). b) The specifications regarding the hydrostatic test have been revised (see 8.5 and 9.6). c) Specifications for dangerous substances and reaction to fire have been included (see 8.6 and 8.7). d) More precise specifications for dimensional inspection have been given (see 9.7). e) The sp
7、ecifications for evaluation of conformity (previously given in Annex C) have been put into a new clause 12. f) Annex ZA has been revised. g) The standard has been editorially revised. Previous editions DIN 2440: 1927-07, 1928-10, 1934-10, 1953-01, 1955-06, 1958-01, 1961x-05, 1972-07, 1978-06 DIN 244
8、1: 1937-11, 1953-01, 1955-06, 1958-01, 1961x-05, 1972-07, 1978-06 DIN EN 10255: 2004-11 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10255:2004+A1 April 2007 ICS 23.040.10 Supersedes EN 10255:2004English Version Technical delivery conditions Tubes en acier non-alli filetables et soudables -
9、Conditions techniques de livraison Rohre aus unlegiertem Stahl mit Eignung zum Schweien 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
10、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 o
11、r 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 ve
12、rsions. 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,
13、 Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR 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 nati
14、onal Members. Ref. No. EN 10255:2004+A1:2007: ENon-alloy steel tubes suitable for welding and threading - EN 10255:2004+A1:2007 (E) Contents Foreword4 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
15、5.1 Mandatory information6 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 series7 6 Manufacturing process .7 6.1 Steelmaking process.7 6.2 Tube manufacturing process .7 7 Delivery conditions8 7.1 General8 7.2 Alternative finishes and pro
16、tection of the tube ends.8 7.3 Suitability for hot dip galvanizing 8 7.4 Hot dip galvanized condition8 8 Requirements.8 8.1 General8 8.2 Chemical composition and mechanical properties9 8.3 Appearance 9 8.4 Dimensions, masses and tolerances.9 8.5 !Leak tightness 11 8.6 Dangerous substances .11 8.7 Re
17、action 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 o
18、f conformity .14 12.1 General14 12.2 Initial type testing (ITT) .14 12.2.1 General14 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 data15 2Page EN 10255:2004+A1:2007 (E) 12.2.6 Sampling.15 12.3
19、 Factory production control (FPC) 15 12.3.1 General15 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 nomi
20、nal diameter17 Annex B (normative) Types of tubes with wall thickness different from medium and heavy series.18 B.1 General18 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 applicat
21、ions 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 labelling23 3EN 10255:2004+A1:2007 (E) Foreword This document (EN 10255:2004+A1:2007) has been prepared by Te
22、chnical 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 stan
23、dards 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 und
24、er 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 d
25、erived, 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,
26、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. 4EN 10255:2004+A1:2007 (E) 1 Scope Th
27、is 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, m
28、edium 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.
29、 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, M
30、etallic 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 f
31、or 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
32、 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 10226-1Pipe threads wher
33、e 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 - Dimensi
34、ons, 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) 5EN 102
35、55:2004+A1:2007 (E) 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 900
36、1, 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 d
37、efine 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 S19
38、5 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
39、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 thick
40、ness (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
41、 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); 6EN 10255:2004+A1:2007 (E) 3) Socket type to be specified (see 7.2); 4) Closed ends to prevent ingress of foreign matter (see 7.2); 5) Thread varni
42、sh 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 qu
43、ality 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 2
44、6.9 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
45、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 T
46、ube 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
47、 shall not include welds used to join lengths of strip prior to forming the tube. 7EN 10255:2004+A1:2007 (E) 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
48、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.
49、 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
