1、STD-BSI ES EN L0214L-ENGL 2000 II Lb24bb9 08584L4 270 BRITISH STANDARD Steel threaded pipe fittings The European Standard EN 10241:2000 has the status of a British Standard ICs 23.040.40 BS EN 10241:2000 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMWED BY COPYRIGHT LAW COPYRIGHT European Committe
2、e for StandardizationLicensed by Information Handling Services - STD.BS1 BS EN 10241-ENGL 2000 Lb24bb7 0858435 307 BS EN 10241:2000 National foreword This British Standard is the officiai English language version of EN 10241:2000. It supersedes BS 1740-1:1971 which is withdrawn The UK participation
3、in its preparation was entrusted to Technical Committee ISEAS, Ferrous pipe fittings (excluding cast iron), which has the responsibility to: - aid enquirers to understand the text; - present to the responsible European committee any enquiries on the - monitor related international and European devel
4、opments and promulgate interpretation, or proposals for change, and keep the UK interests informed them in the UK 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
5、ations referred to in this document may be found in the BSI Standards Catalogue under the section entitled “Intemationai Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provis
6、ions 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 cover, an inside front cover, the EN titie page, pages 2 to 31
7、and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect o
8、n 15 July 2000 Amendments issued since publication Amd.No. IDate I comments 0 BSI 07-2000 ISBN O 580 34812 1 COPYRIGHT European Committee for StandardizationLicensed by Information Handling ServicesSTD.BS1 BS EN L024L-ENGL 2000 I Lb24bb 08584Lb 043 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM E
9、N 10241 April 2000 ICs 23.040.40 English version Steel threaded pipe fittings Raccords filetes en acier Stahlfittings mit Gewinde This European Standard was approved by CEN on 29 March 2000 CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for gi
10、ving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning sich national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official ver
11、sions (English, French, German). A version in any other language made by traislation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as tie official versions. CEN members are the national standards bodies of Austria, Belgium,
12、 Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Noway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPISCHEC KOMITEE FOR NORMUNG Central Secretariat: ru
13、e de Stassart, 36 B-1050 Brussels Q 2000 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10241:2000 E COPYRIGHT European Committee for StandardizationLicensed by Information Handling ServicesPage 2 EN 10241 :2000 Contents Foreword
14、. 3 1 2 3 4 5 5.1 5.2 6 6.1 6.2 6.3 6.3.1 6.3.2 6.4 7 7.1 7.2 7.2.1 7.2.2 7.2.3 8 8.1 8.2 8.2.1 8.2.2 8.2.3 9 9.1 9.1.1 9.1.2 9.2 9.2.1 9.2.2 10 11 12 Scope . -4 Normative references . 4 Terms and definitions - 4 Designation I . 5 Mandatory information . .- 5 Information to be supplied by the purcha
15、ser - 5 Options - 5 Technical requirements . - 6 Fitting manufacture - 6 Surface condition 6 Material . - . 6 Chemical composition 6 Mechanical properties -. 6 Threads -. 7 Dimensions and tolerances . 7 Dimensions 7 Tolerances . - 7 Tolerances on length of fitting 7 Tolerances on diameters 8 Toleran
16、ce on threads .- 8 Protection ._ 8 General - 8 Zinc protective coating . 8 Hot dip zinc galvanizing . - . 8 Electro zinc plating . 8 Zinc flake . 8 Inspection and testing 8 Leaktightness test .-. 8 Hydrostatic test . _. 8 Air test 9 Inspection of thread 9 Inspection method . i -. 9 Thread electro zi
17、nc plating 9 Marking 9 Inspection documents 9 . Packaging . 9 Annex A (informative) Thread designation and nominal size . 31 O BSI 07-2000 COPYRIGHT European Committee for StandardizationLicensed by Information Handling ServicesSTD.BSI BS EN 30241-ENGL 2000 9 lib24bb 0858438 9Lb m Page 3 EN 10241 :2
18、000 Foreword This European Standard has been prepared by Technical Committee ECISSTTC 29, Steel tubes and fittings for steel tubes, 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 endor
19、sement, at the latest by October 2000, and conflicting national standards shall be withdrawn at the latest by October 2000. According to the CENICENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgi
20、um, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. O BCI 07-2000 COPYRIGHT European Committee for StandardizationLicensed by Information Handling ServicesSTD*BSI BS EN 1
21、024L-ENGL 2000 Lb2Libb9 0858419 852 Page 4 EN 10241 2000 I Scope This European Standard specifies requirements for threaded fittings of nominal sizes from DN 6 to DN 150 inclusive, made out of welded or seamless steel tubes, forging and rolled bars. It is applicable to those threaded steel pipe fitt
22、ings that are used in the transportation and distribution of liquid or gas. 2 Normative references 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 ar
23、e listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporate in it by amendments or revision. For undated references, the latest edition of the publication referred to applies (including amendments)
24、. EN 10204, Metallic products - Types of inspection documents. EN IS0 6708, Pipework components - Definition and selection of DN (nominal size) (IS0 6708:1995). IS0 7-1 ), Pipe threads where pressure-tight joints are made on the threads - Part 1: Dimensions, tolerances and designa tion. IS0 7-2), Pi
25、pe threads where pressure-tight joints are made on the threads - Patt 2: Verification by means of limit gauges. IS0 228-1, Pipe threads where pressure-tightjoints are not made on the threads - Part 1: Dimensions, tolerances and designation. IS0 228-2, Pipe threads where pressure-tight joints are not
26、 made on the threads - Part 2: Verification by means of limit gauges. 3 Terms and definitions For the purposes of this standard, the following terms and definitions apply: 3.1 nominal size (DN) DN: as defined in EN IS0 6708 NOTE The comparison between the thread size designation and the nominal size
27、 (DN) is given in Table A.l for information only. 3.2 seamless fitting fitting manufactured from seamless tube, forging or rolled bar 3.3 fabricated fitting fitting manufactured either from a weldt d tube or where the welding forms part of the fabrication of the fitting 3.4 tubular fitting manufactu
28、red from medium or heavy pipe as defined in Table 6. These fittings are defined in Tables 21 to24 ) European Standards are under development (series EN 10226). When published, they may be agreed at the time of enquiry andior order. O BSI 07-2000 COPYRIGHT European Committee for StandardizationLicens
29、ed by Information Handling Services STD.BS1 BS EN 10241-ENGL 2000 lb24bb 0858420 574 E Page 5 EN 10241 :2000 4 Designation The fitting in accordance with this European Standard shall be designated by the following in the sequence shown: 1) type of fitting (see Tables 7 to 24); 2) reference to this E
30、uropean Standard (EN 10241); 3) either nominal size (DN), or thread size. Fittings which have the same nominal sizes (DN) are designated only with that DN (see example 1). EXAMPLE 1: For an equal female elbow with DN 50 run, the designation will be: Elbow - EN 10241 - DN 50 Fitting which has differi
31、ng nominal sizes shall be shown as in the sequence 1-2 where 1 refers to the run and 2 refers to the branch or the reduction (see examples 2 and 3). EXAMPLE 2: For a reducing tee with DN 50 run and DN 25 branch, the designation will be: Reducing tee - EN 10241 - DN 50 x DN 25 EXAMPLE 3: For a bush w
32、ith DN 40 and a reduction DN 25, the designation will be: Bush - EN 10241 - DN 40 x DN 25 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/or order: 1) the quantity to be delivered; 2) the
33、 designation (see clause 4). 5.2 Options A number of options are specified in this European Standard and they 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/or order, the fittings shall be supplied in accordance
34、 with the basic specification. 1) Taper internal thread type Rc conforming to IS0 7-1 2) Parallel external thread type GA or GB conforming to IS0 228-1 3) Parallel internal thread type G conforming to IS0 228-1 4) Zinc protective coating (see 8.2) O BSI 07-2000 COPYRIGHT European Committee for Stand
35、ardizationLicensed by Information Handling Services STD.BS1 BS EN 30241-ENGL 2000 E 1624669 0858423 400 H % 0,25 Page 6 EN 10241 :2000 % % 0,35 0,09 5) Leaktightness test (see 9.1) C max. % 0,25 6) Special packaging (see clause 11) 7) Inspection document 2.1 (see clause 12) Mn max. P max. S max. % %
36、 % 1,40 0,045 0,045 6 Technical requirements 6.1 Fitting manufacture Dimensions and tolerances of differing types of fittings shall be as given in Tables 5 to 24. 6.2 Surface condition Tensile stren th min. N/mm 320 B The fitting shall have a smooth surface consistent with the manufacturing process
37、and be free from burrs; surface marks may be ground. Unless otherwise specified in the Tables 11 and 12, the female thread entrance shall be chamfered. Elongation min. % 20 Repairs by welding, other than the weld seam, are forbidden. 6.3 Material 6.3.1 Chemical composition The fitting shall be manuf
38、actured from steel having the chemical composition indicated in Tables 1 and 2. Table i - Chemical composition of seamless steel fittings I C max. I S max. I P max. I 6.3.2 Mechanical properties The fitting shall be manufactured from base material having the mechanical properties indicated in Tables
39、 3 and 4. These properties shall 7ot be subject to verification on the fitting. O BSI 07-2000 COPYRIGHT European Committee for StandardizationLicensed by Information Handling ServicesSTD.BSI BS EN L024L-ENGL 2000 111 Lb24bb 0858422 347 9 Tensile stren th min. Yieds strength min. N/mm B N/mm2 320 195
40、 Page 7 EN 10241 :2000 Elongation min. % 20 Over65 Over75 to 75 to 150 +6,0 +8,0 O O 6.4 Threads Over 150 +10,0 O Internal threads shall be parallel and external threads shall be taper conforming to IS0 7-1, except for certain tubulars in Tables 21, 23 and 24 or wfien the purchaser specifies other t
41、ypes of thread (see 5.2, option 1 or 2 or 3); in this case the type of thread chal1 be identified. +1,5 O Tolerance 7 Dimensions and tolerances +3,0 +4,5 O O 7.1 Dimensions Fittings shall have the appropriate dimensions given in Tables 6 to 24. 7.2 Tolerances When tolerances are not specified in Tab
42、les 5 to 24, dimensions are nominal and subjected to manufacturing tolerances. 7.2.1 Tolerances on length of fiturig The tolerances on the overall lenglh. of the fitting, centre to face, centre to centre and back to face dimensions are given in Table 5. Table 5 - Tolerances Dimension Up to and Over
43、25 Over 40 including 25 1 to40 1 to65 O BSI 07-2000 COPYRIGHT European Committee for StandardizationLicensed by Information Handling ServicesSTD.BS1 BS EN LO24L-ENGL 2000 H Zb24bb 0858423 283 II Page 8 EN i0241 :2000 7.2.2 Tolerances on diameters Unless otherwise stated in tables, the tolerances on
44、outside diameters are given in Table 6. 7.2.3 Tolerance on threads The axis of screw threads shall be accurate within -t0,5“ of the specified angle for fittings described in Tables 7 to 23 and Il 3“ for fittings described in Table 24. 8 Protection 8.1 General The fitting shall be supplied black and
45、shall be protected by a protective coating, e.g. light oil. 8.2 Zinc protective coating When a zinc protective coating is specified by the purchaser (see 5.2, option 4), one of the methods given in 8.2.1 to 8.2.3 shall be applied, at the discretion of the manufacturer. 8.2.1 Hot dip zinc galvanizing
46、 Galvanizing of fittings shall be performed before the thread cutting operation and shall be by means of the hot dip method. The minimum average coating thickness shall be 55 prn on the outside of the fitting, with a local average of 45 pm on 100 mm2. The hot dip zinc bath shall contain not less tha
47、n 98,5 % pure zinc. 8.2.2 Electro zinc plating Electro zinc plating shall be performed on the finished black fitting. The minimum coating thickness on the outside of the fitting shall be 8 pm. 8.2.3 Zinc flake Zinc flake non-electrolically applied cured coating shall be performed on the finished bla
48、ck fitting. The coating thickness on the outside of the fitting shall be between 5pm to 1 O pm. NOTE The zinc coating thickness can be checked with an electronic and/or magnetic appliance. 9 Inspection and testing 9.1 Leaktightness test Each fitting, after being threaded, shall be capable of withsta
49、nding, without any signs of leak hydrostatic or air test as specified in clauses 9.1.1 and 9.1.2. This test shall only be carried c specified by the puchaser at the time of enquiry and/or order (see 5.2, option 5). 9.1 .I Hydrostatic test Hydrostatic test, using water or light oil as a medium. 9.1.1.1 Tubulars 9, the when These shall be tested to a minimum internal pressure of 50 bar. O BSI 07-2000 COPYRIGHT European Committee for StandardizationLicensed by Information Handling ServicesSTD.BSI BS EN L024L-ENGL 2000 m Lb24bbY 0858424 LLT m Page 9 EN 10241 :2000 9.1.1.2 F
