1、BRITISH STANDARD Loose steel tubes for tube and coupler scaffolds - Technical delivery conditions The European Standard EN 39:2001 has the status of a British Standard ICs 77.140.75; 91.220 BS EN 39:2001 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 39:ZOOl Amd.No. Dat
2、e National foreword Comments This British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 August 2001 O BSI 07-2001 This British Standard is the off
3、icial English language version of EN 39:2001. It supersedes BS 1139-1.1:1990 which is withdrawn. This standard includes tube with a wall thickness of 3,2 mm as well as the previous 4,O mm. The other principle changes are contained in the European foreword of this standard. The UK participation in it
4、s preparation was entrusted by Technical Committee B/514, Access and support equipment, and ISE/8, Steel pipes, to Subcommittee B/514/28, Props, tubes and couplers, which has the responsibility to: L L aid enquirers to understand the text; present to the responsible European committee any enquiries
5、on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. - A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The Brit
6、ish Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A Britis
7、h Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front
8、cover, an inside front cover, the EN title page, pages 2 to 16, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. ISBN O 580 37960 4 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 39 April 2001 ICs 77.140.75; 9
9、1.220 Supersedes HD 1039:1990 English version Loose steel tubes for tube and coupler scaffolds - Technical delivery conditions Tubes libres en acier pour chafaudages tubes et raccords - Conditions techniques de livraison Systemunabhngige Stahlrohre fr die Veiwendung in Trag- und Arbeitsgersten - Tec
10、hnische Lieferbedingungen 0 This European Standard was approved by CEN on 18 January 2001. CEN members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date l
11、ists and bibliographical references concerning such national standards may be obtained on application to the 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 respo
12、nsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Nethe
13、rlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 8-1050 Brussels 0 2001 CEN All rights of exploitation in any form and by any means re
14、served worldwide for CEN national Members. Ref. No. EN 39:2001 E Page 2 EN 39:2001 Contents Foreword 3 1 2 3 4 4.1 4.2 5 5.1 5.2 5.3 6 6.1 6.2 7 7.1 7.2 7.3 7.4 7.5 7.6 8.1 8.2 8.3 9 9.1 9.2 10 10.1 10.2 10.3 10.4 11 12 13 a Scope 5 Normative references 5 Terms and definitions 6 Classification and d
15、esignation . 6 Classification 6 Designation 6 Information to be supplied by the purchaser 6 Mandatory information . 6 Options . 7 Examples of ordering . 7 Manufacturing process . 7 Steelmaking process 7 Tube manufacture 7 Requirements . 8 General 8 Appearance 8 Straightness . 8 External weld bead an
16、d preparation of ends . 9 Dimensions, mass and tolerances . 9 Inspection . 10 Type of inspection 10 Inspection documents 10 Summary of inspection and testing 11 Sampling . 12 Frequency of tests 12 Preparation of samples and test pieces . 12 Test methods 13 Tensile test . 13 Flattening test . 13 Visu
17、al examination . 13 Dimensional inspection 13 Retests, sorting and reprocessing . 13 Chemical composition and mechanical properties 8 Marking . 14 Coating 14 Annex A (informative) Values for design of structures . 15 Bibliography 16 O BSI 07-2001 Page 3 EN 39:2001 Foreword This European Standard has
18、 been prepared by Technical Committee ECISSTTC 29, Steel tubes and fittings for steel tubes, the Secretariat of which is held by UNI, in conjunction with CEN/TC 53, Temporary works equipment. This European Standard replaces HD 1039:1990. This European Standard shall be given the status of a national
19、 standard, either by publication of an identical text or by endorsement, at the latest by October 2001, and conflicting national standards shall be withdrawn at the latest by October 2001. According to the CENKENELEC Internal Regulations, the national standards organizations of the following countri
20、es are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. This European Standard is derived with modifications f
21、rom Harmonization Document HD 1039, Steel tubes for falsework and working scaffolds - Requirements, tests. This European Standard cancels and replaces HD 1039:1990, Steel tubes for falsework and working scaffolds - Requirements, tests. The significant technical changes are: - tubes will now be suppl
22、ied galvanized unless an option for them to be supplied without a coating (bare) or painted is specified; - all tubes are now required to be suitable for galvanizing; - requirements for the coating previously contained in annexes A and B are now covered (in accordance with CEN rules) by reference to
23、 European or International Standards and are not included in the text of this standard; - tubes may only be manufactured using killed steel; - the maximum tensile strength of the tubes has been increased to 520 MPa I); - a maximum manganese content has been introduced and the sulfur and phosphorus c
24、ontents reduced; - the mass tolerance for single tubes has been changed from -8 % to -73 %. The maximum single tube mass tolerance and the mass tolerance for batches of tubes have been deleted from the standard (outside diameter tolerances have not been changed); - length types, standard or approxim
25、ate or exact, and tolerances on those length types, are now specified; - a flattening test requirement has been introduced for welded tubes; - requirements for the type and content of inspection documents have been introduced for use when inspection documentation is specified; - specific inspection
26、is now permitted as an option with testing frequencies specified; ) 1 MPa = 1 N/mm2. O BSI 07-2001 Page 4 EN 39:2001 0 - the depth of marking of at least 0,2 mm is now a recommendation with an option to specify it as a requirement. The order of marking has changed slightly in order to preserve the s
27、eparation of standard number and thickness type. Annex A is informative. O BSI 07-2001 Page 5 EN 39:2001 a 1 Scope This European Standard specifies the requirements for non-alloy steel tubes for use with EN 74 couplers in the construction of falsework and working scaffolds. It includes detailed requ
28、irements for marking to aid long-term identification, for protective coating by reference to European and International Standards, and for inspection and testing. NOTE 1: Tubes to this European Standard, which have a specified outside diameter of 48,3 mm and specified thickness of 3,2 mm or 4,O mm,
29、may also be used in conjunction with other sizes and grades of steel tubes for applications such as prefabricated scaffolds. NOTE 2: The use of these tubes should be in accordance with appropriate International and national requirements, for example prEN 12811 and prEN 12812. 2 Normative references
30、This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these pub
31、lications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 10002-1 EN 10020 EN 10021 EN 10027-1 EN 10027-2 EN 10204 EN 10233 EN 10240 EN IS0 377 Metallic
32、materials - Tensile testing - Part 1: Method of test (at ambient temperature). Definition and classification of grades of steel. General technical delivery requirements for steel and iron products. Designation systems for steel - Part 1: Steel names principal symbols. Designation systems for steel -
33、 Part 2: Steel numbers. Metallic products - Types of inspection documents (including amendment A 1: 1995). Metallic materials - Tube - Flattening test. Internal and/or external protective coatings for steel tubes - Specification for hot dip galvanized coatings applied in automatic plants. Steel and
34、steel products - Location and preparation of samples and test pieces for mechanical testing. Hot dip galvanized coatings on fabricated iron and steel articles - Specification and test methods. Paints and varnishes - Cross-cut test. Steel - Conversion of elongation values - Part 1: Carbon and low all
35、oy steels. Iron and steel products - inspection documents contents - List of information and description. Steel tubes, fittings and structural hollow sections - Definitions and symbols for use in product standards. Paints and varnishes - Evaluation of degradation of paint coatings - Designation of i
36、ntensity, quantity and size of common types of defect - Part 3: Designation of degrees of rusting. Paints and varnishes - Determination of resistance to neutral salt spray. Designation system for steel - Additional symbols. 0 EN IS01461 EN IS0 2409 EN IS0 2566-1 prEN 1 O1 68* prEN 10266” IS0 4628-3
37、IS0 7253: 1 996 CR 10260 ) In preparation, until this document is published as a European Standard the corresponding national standard(s) should be agreed at the time of enquiry and order. O BSI 07-2001 Page 6 EN 39:2001 3 Terms and definitions For the purposes of this European Standard the terms an
38、d definitions given in EN 10020 (definition and classification of steel), EN 10021 (inspection and testing), EN 10204 (inspection documents), prEN 10266 (seamless and welded tube) and the following, in addition to or instead of the definitions and symbols given in the above text, apply. 3.1 type 3 t
39、ube tube of 3,2 mm specified wall thickness 3.2 type 4 tube tube of 4,O mm specified wall thickness 3.3 bare tube tube whose surface is as manufactured without subsequent coating 4 Classification and designation 4.1 Classification In accordance with the classification system in EN 10020, the steel i
40、n Table 1 is classified as non-alloy quality steel. 4.2 Designation For the tubes covered by this European Standard the steel designation consists of: - the number of this European Standard (EN 39); plus either: - the steel name in accordance with EN 10027-1 and CR 10260; or: - the steel number allo
41、cated in accordance with EN 10027-2. 5 Information 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) the quantity (mass or total length or number); b) the number of this European Standard (EN 39
42、); c) the type (3 or 4) or specified wall thickness (mm); d) the standard length required (see 7.6.5); e) the options required (see 5.2). O BSI 07-2001 Page 7 EN 39:2001 5.2 Options A number of options are specified in this European Standard and are listed below. In the event that the purchaser does
43、 not indicate a wish to implement any of these options, at the time of enquiry and order, the tube shall be supplied in accordance with the basic specification (see 5.1). The type of tube, seamless or welded, shall be as specified (see 6.2). The silicon content of range 1 shall be limited (see 7.2).
44、 Approximate or exact length is specified (see 7.6.5). A tighter tolerance on length is specified (see Table 2). Specific inspection and testing is specified (see 8. 1). An inspection document shall be supplied (see 8.2.1). Depth of impression of marking to be at least 0,2 mm (see clause 12). Tubes
45、shall be supplied bare (see clause 13). Temporary corrosion protection is specified (see clause 13). Tubes shall be supplied painted, colour to be agreed (see clause 13). 5.3 Examples of ordering EXAMPLE1 One thousand tubes in accordance with EN 39 with a specified wall thickness of 3,2 mm (type 3)
46、in 6,O metre standard lengths, supplied bare (option 8) and with temporary corrosion protection (option 9). 1 O00 tubes -EN 39 - 3,2 - 6,O - Options 8 and 9. EXAMPLE 2 48 tonnes of tube in accordance with EN 39 type 4 (4,O mm specified wall thickness), supplied in 6,4 metre standard lengths and with
47、 an inspection document 2.2 according to EN 10204 provided (option 6). 48 tonnes tube - EN 39 - 4 - 6,4 - Option 6 - 2.2. 6 Manufacturing process 6.1 Steelmaking process The steelmaking process is at the discretion of the manufacturer. The steel shall be killed. 6.2 Tube manufacture The tubes shall
48、be made seamless or welded, at the discretion of the manufacturer unless option 1 is specified. Option 1 tubes shall be supplied seamless or welded the type to be specified by the purchaser. Finished welded tubes shall not include welds used for joining together lengths of the hot or cold rolled str
49、ip prior to forming. O BSI 07-2001 Page 8 EN 39:2001 in %, by mass C Si Mn P S AI max. max. max. max. min. 0,20 1,40 0,040 0,045 0,020 7 Requirements Yield strength Reli min MPa 235 7.1 General Tensile strength When manufactured in accordance with clause 6 and inspected in accordance with clause 8, the tube shall conform to the requirements of this European Standard. Elongation In addition to the requirements of this European Standard, the general technical delivery requirements specified in EN 10021 shall apply. 7.2 Chemical composition and mechanical properties The tube shal
