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1、BRITISH STANDARD BS EN 10255:2004 Non-alloy steel tubes suitable for welding and threading Technical delivery conditions The European Standard EN 10255:2004 has the status of a British Standard ICS 23.040.10 BS EN 10255:2004 This British Standard was published under the authority of the Standards Po
2、licy and Strategy Committee on 24 August 2004 BSI 24 August 2004 ISBN 0 580 44330 2 National foreword This British Standard is the official English language version of EN 10255:2004. EN 10255 is a candidate “harmonized” European Standard and fully takes into account the requirements of the European
3、Commission mandate M131 “Steel tubes and fittings”, given under the EU Construction Products Directive (89/106/EEC), and intended to lead to CE marking. The date of applicability of EN 10255 as a harmonized European Standard, i.e. the date after which this standard may be used for CE marking purpose
4、s, is subject to an announcement in the Official Journal of the European Communities. The Commission in consultation with Member States have agreed a transition period for the co-existence of harmonized European Standards and their corresponding national standard(s). It is intended that this period
5、will comprise a period, usually nine months, after the date of availability of the European Standard, during which any required changes to national regulations are to be made, followed by a further period, usually of 12 months, for the implementation of CE marking. At the end of this coexistence per
6、iod, the national standard(s) will be withdrawn. EN 10255 is the subject of transitional arrangements agreed under the Commission mandate. In the UK, the corresponding national standard is: BS 1387:1985, Specification for screwed and socketed steel tubes and tubulars and for plain end steel tubes su
7、itable for welding or for screwing to BS 21 pipe threads; and based on this transition period of twenty-one months, BS 1387:1985 would be withdrawn in June 2006. NOTEThis date is approximate. Users of this standard should contact BSI Customer Services for confirmation of withdrawal. The UK participa
8、tion in its preparation was entrusted to Technical Committee ISE/8, Steel pipes, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European public
9、ations referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the nece
10、ssary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the inte
11、rpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 21 and a back cover. The BSI co
12、pyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments W - - - - - - - - 7 - - - - - - A - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - W W D - - w - - - - EN 10255:2004 (E) 2 Contents pa
13、ge Foreword4 1 Scope 5 2 Normative references5 3 Terms and definitions .6 4 Classification and designation.6 5 Information to be supplied by the purchaser 6 5.1 Mandatory information6 5.2 Options .6 5.3 Examples of ordering7 5.3.1 By outside diameter and thickness .7 5.3.2 By thread size and series7
14、 6 Manufacturing process .7 6.1 Steelmaking process.7 6.2 Tube manufacturing process .7 7 Delivery conditions7 7.1 General7 7.2 Alternative finishes and protection of the tube ends.7 7.3 Suitability for hot dip galvanizing8 7.4 Hot dip galvanized condition8 8 Requirements.8 8.1 General8 8.2 Chemical
15、 composition and mechanical properties8 8.3 Appearance 9 8.4 Dimensions, masses and tolerances.9 9 Inspection.11 9.1 Type of inspection.11 9.2 Inspection documents.11 9.3 Tensile test.12 9.4 Bend test.12 9.5 Flattening test 12 9.6 Leak tightness test 12 9.7 Dimensional inspection 13 9.8 Visual exami
16、nation 13 10 Marking.13 11 Temporary protective coating13 Annex A (informative) Correlation between specified outside diameter, thread size, and nominal diameter14 Annex B (normative) Types of tubes with wall thickness different from medium and heavy series15 B.1 General15 B.2 Requirements.15 B.3 Ma
17、rking.15 Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EC Construction Products Directive for applications covered by Mandate M 131.17 ZA.1 Scope and relevant characteristics .17 ZA.2 Procedure of attestation of conformity of pipes 18 ZA.3 Evaluation of Co
18、nformity18 EN 10255:2004 (E) 3 ZA.4 Declaration of Conformity.19 ZA.5 CE Marking and Labelling.19 Bibliography21 EN 10255:2004 (E) 4 Foreword This document (EN 10255:2004) has been prepared by Technical Committee ECISS/TC 29 “Steel tubes and fittings for steel tubes”, the secretariat of which is hel
19、d 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 February 2005, and conflicting national standards shall be withdrawn at the latest by May 2006. This document has been prepared under a ma
20、ndate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). 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 mo
21、difications, 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, Cyprus, Czech Republic, D
22、enmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 10255:2004 (E) 5 1 Scope This document specifies the requirements fo
23、r 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 desig
24、nated 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 c
25、ited 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
26、 1: Method of test at ambient temperature EN 10020, Definition and classification of grades of steel EN 10021, General technical delivery requirements for steel and iron products EN 10027-1, Designation systems for steel - Part 1: Steel names, principal symbols EN 10027-2, Designation systems for st
27、eels - Part 2: Numerical system EN 10204, Metallic products - Types of inspection documents EN 10232, Metallic materials - Tube (in full section) - Bend test EN 10233, Metallic materials - Tube - Flattening test EN 10240, Internal and/or external protective coatings for steel tubes - Specification f
28、or 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
29、) 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 prEN 10226-2, Pipe threads where pressure-tight
30、 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 10255:2004 (E) 6 EN ISO 1461, Ho
31、t dip galvanized coatings on fabricated iron and steel articles - Specifications and test methods (ISO 1461:1999) EN ISO 2566-1, Steel - Conversion of elongation values - Part 1: Carbon and low alloy steels (ISO 2566-1:1984) 3 Terms and definitions For the purposes of this document, the terms and de
32、finitions 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 coati
33、ng 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 Inf
34、ormation to be supplied by the purchaser 5.1 Mandatory information The following information shall be supplied by 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) T
35、he 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
36、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 (se
37、e 7.2); 3) Socket type to be specified (see 7.2); 4) Closed ends to prevent ingress of foreign matter (see 7.2); EN 10255:2004 (E) 7 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
38、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 Cla
39、use 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
40、- 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 Ma
41、nufacturing 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
42、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. 7 Delivery conditions 7.1 General Unless otherwise specified (see 7.2
43、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 followi
44、ng options: EN 10255:2004 (E) 8 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 pur