BS 182-1972 Specification for galvanized line-wire for telephone and telegraph purposes《电话和电报用镀锌电线规范》.pdf

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1、BRITISH STANDARD CONFIRMED FEBRUARY 1988 BS 182:1972 Specification for Galvanized line-wire for telephone and telegraph purposesBS182:1972 This British Standard, having been approved by the Iron and Steel Industry Standards Committee, was published underthe authority of the Executive Board on 30Marc

2、h1972 BSI 03-2000 First published (as part of BS16:1905) First published (as BS 174 to 184) February, 1923 First published (as BS 182 to 184) May, 1927 First revision, October, 1938 First published as BS 182, March,1972 The following BSI references relate to the work on this standard: Committee refe

3、rences ISE/26/11 ISE/26 Draft for comment 70/28470 ISBN 0 580 06959 1 Co-operating organizations The Iron and Steel Industry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and indus

4、trial organizations: British Cast Iron Research Association British Constructional Steelwork Association British Ironfounders Association British Mechanical Engineering Confederation British Steel Industry* Council of Iron Producers Council of Ironfoundry Associations Department of Employment Depart

5、ment of Trade and Industry (Marine Division) Engineering Equipment Users Association Federation of Civil Engineering Contractors Institute of British Foundrymen Institute of Iron and Steel Wire Manufacturers* Institute of Marine Engineers Institution of Civil Engineers Institution of Mechanical Engi

6、neers (Automobile Div.) Institution of Production Engineers Institution of Structural Engineers Lloyds Register of Shipping Ministry of Defence Ministry of Defence, Army Department National Association of Drop Forgers and Stampers National Physical Laboratory (Department of Trade and Industry) Oil C

7、ompanies Materials Association Royal Institute of British Architects Shipbuilders and Repairers National Association Society of Motor Manufacturers and Traders Limited* Stainless Steel Development Association Steel Castings Research and Trade Association Tank and Industrial Plant Association Tin Res

8、earch Institute Water-Tube Boilermakers Association The scientific and industrial organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: Alloy and Stainless Steel Confer

9、ence British Bolt, Nut, Screw and Rivet Federation British Railways Board British Wire Netting Association Electric Cable Makers Confederation Electricity Council, The Central Electricity Generating Board and the Area Boards in England and Wales Fencing Contractors Association Institution of Enginee

10、ring Inspection Post Office Society of Chain Link Fencing Manufacturers Society of Motor Manufacturers and Traders Spring Research Association An individual firm Amendments issued since publication Amd. No. Date CommentsBS182:1972 BSI 03-2000 i Contents Page Co-operating organizations Inside front c

11、over Foreword ii 1 Scope 1 2 Definitions 1 3 Information to be supplied by the purchaser 1 4 Manufacture 1 5 Joints 1 6 Freedom from defects 1 7 Tolerances 1 8 Inspection and testing 1 9 Selection of test pieces 1 10 Mechanical test requirements 1 11 Electrical test requirement 2 12 Tests on galvani

12、zing 2 13 Retests 2 14 Packing and marking 2 Appendix A Factors for the conversion of electrical resistance to 20 C 4 Appendix B Alternative method of acceptance testing 4 Table 1 Galvanized steel line-wire 3BS182:1972 ii BSI 03-2000 Foreword This standard makes reference to the following British St

13、andards: BS 443, Galvanized coatings on wire. BS 3239, Determination of resistivity of metallic electrical conductor materials. BS 4545, Methods for mechanical testing of steel wire. This metric revision of BS 182, which has been prepared under the authority of the Iron and Steel Industry Standards

14、Committee, replaces the 1938 edition of the standard which was published with BS 183 and BS 184 under one cover. The technical requirements of users of galvanized line-wire for telephone and telegraph purposes have brought about the inclusion in this standard of many values which are conversions of

15、the imperial values specified in the 1938 edition. An Appendix B has been added giving an alternative method of acceptance testing based on inspection by attributes. For continuity, the designation system used in the 1938 edition has been retained. This was related to the nominal weight in pounds pe

16、r mile. A British 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 co

17、mprises a front cover, an inside front cover, pages i and ii, pages1 to 4 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS182:1972 BSI 03-2000 1 1 Scope This Brit

18、ish Standard specifies the electrical and mechanical properties of galvanized line-wire for telegraph and telephone purposes for a number of diameters between 1.52mm and6.07mm. NOTEThe titles of British Standards referred to in this standard are given on page ii. 2 Definitions For the purposes of th

19、is British Standard the following definitions apply: 2.1 coil a single length of finished wire without joint or splice of any description, wound in close packed concentric rings 2.2 bundle two or more coils bound together 2.3 batch any quantity of finished wire presented for examination and test at

20、any one time. 2.4 test piece a length of wire taken for test in accordance with this standard. 2.5 sample one or more test pieces selected from a batch in accordance with this standard or alternatively as agreed between the manufacturer and purchaser 3 Information to be supplied by the purchaser The

21、 following information should be given on the enquiry and order: 1) The type of wire required, described by the number of this standard and the appropriate designation, e.g. BS 182; GSL.200. 2) If inspection and testing is to be carried out in accordance with the method of acceptance testing based o

22、n inspection by attributes as described inAppendix B. (See 8 and Appendix B.) 4 Manufacture The wire shall be drawn from low carbon steel and shall be supplied in a softened condition. It shall be galvanized by the hot dip or electrolytic process. 5 Joints The wire shall contain no weld or joint oth

23、er than in the rod before it is drawn. By agreement between the purchaser and the manufacturer where special lengths are required which are outside the scope of the normal production of the manufacturer, wire may be supplied with joints made by welding after drawing and before galvanizing. NOTEIt sh

24、ould be noted that in such cases, the mechanical properties of the wire in a section containing a weld will not necessarily comply with all the requirements of this standard. 6 Freedom from defects The wire shall be of good uniform quality, free from splits, surface flaws, piping and other harmful d

25、efects. The wire shall be smoothly galvanized and free from bare spots. 7 Tolerances The wire shall comply with the diameter and weight tolerances given in Table 1. The diameter of the wire shall be the mean of two readings taken at right angles to each other in the same plane. No individual reading

26、 shall lie outside the limits of tolerance given in Table 1. 8 Inspection and testing Selection of test pieces and all tests shall be carried out at the manufacturers works in accordance with9, 10, 11 and 12, or if agreed between the purchaser and the manufacturer, in accordance with Appendix B. If

27、test certificates are required, orthe purchaser, or his representative, wishes to witness the selection of the test pieces and the tests, this shall be stated on the order. 9 Selection of test pieces A sufficient length, for the tests specified in 10, 11 and 12 shall be cut from each end of the fini

28、shed coils at the rate of one coil for every ten coils or part thereof in any one batch. 10 Mechanical test requirements 10.1 General. Any straightening which the test pieces, used for the tests specified in 10.2 and 10.3, may require shall be carried out in the cold condition in accordance with BS

29、4545. 10.2 Tensile test. The tensile test shall be carried out in accordance with BS4545but in routine testing on machines with fixed rates of separation of the grips, the test length between grips shall be between 100 mm and 200 mm and the rate of separation of the grips shall not be less than 25%

30、or more than 50% of the test length/minute.BS182:1972 2 BSI 03-2000 The breaking load of the wire shall be within the limits given in Table 1 for the appropriate designation. 10.3 Ductility test. The test piece shall withstand being wrapped eight turns on a mandrel of its own diameter, and unwrapped

31、 seven turns, without fracture of the wire. 11 Electrical test requirement The electrical resistance per kilometre of the test piece determined in accordance with the routine method specified in BS3239 and multiplied by C shall not exceed the value given in Table 1. 12 Tests on galvanizing The galva

32、nized wire shall be tested in accordance with the requirements of BS443, and shall comply with that standard in respect of the weight, uniformity and adherence of the zinc coating. 13 Retests Should a test piece fail to meet any of the test requirements, two additional tests in respect of the same r

33、equirements shall be made on material taken from the same coil. Provided the results of the additional tests fulfil the requirements, all the material represented shall be deemed to comply with this British Standard. If the results of either of these additional tests do not fulfil the test requireme

34、nts, the coil from which the test piece was cut shall be deemed not to comply with this British Standard. The remaining material may be accepted provided that further test pieces cut from the remaining coils, as specified in 9, are tested in accordance with this British Standard, and meet its requir

35、ements. 14 Packing and marking Unless otherwise specified the internal diameter of a bound coil shall be not less than 480mm and not more than 530 mm. Each coil shall be securely bound and the material used for the binders shall be such that it has no deleterious or corrosive effect on the wire. A d

36、urable label shall be securely attached to the inside of each coil and indelibly marked with the manufacturers name, the number of this British Standard, the nominal size and designation of the wire, and the mass of the coil to the nearest 0.5 kg. where K = nominal mass per kilometre; W = mass per k

37、ilometre of test piece; C = factor for the conversion of electrical resistance to 20 C (see Appendix A). W K -BS 182:1972 BSI 03-2000 3 Table 1 Galvanized steel line-wire Designation Mass Diameter Breaking load of wire Maximum resistance of wire of nominal mass at 20 C Constant, being nominal mass p

38、erkm resistance per km at 20 C Mass of each coil Nominal Min. Max. Nominal Min. Max. Min. Max. Min. Max. kg/km kg/km kg/km mm mm mm N N 7/km kg kg GSL. 800 225 220 231 6.07 6.00 6.15 9 620 13 810 4.23 953 41 54 GSL. 600 169 165 174 5.26 5.18 5.33 7 160 10 380 5.64 953 41 54 GSL. 450 127 121 131 4.55

39、 4.47 4.62 5 330 7 790 7.52 953 41 54 GSL. 400 113 109 116 4.29 4.22 4.37 4 750 6 980 8.46 953 41 54 GSL. 300 84.6 80.9 87.7 3.71 3.63 3.78 3 520 5 220 11.28 953 32 54 GSL. 200 56.4 54.1 59.9 3.05 2.97 3.12 2 360 3 560 16.9 953 23 54 GSL. 150 42.3 39.5 44.3 2.62 2.54 2.69 1 720 2 640 22.5 953 23 54

40、GSL. 100 28.2 27.1 29.9 2.16 2.11 2.21 1 190 1 780 33.8 953 23 54 GSL.75 21.3 19.7 22.3 1.85 1.80 1.91 860 1 330 45.1 953 23 54 GSL.50 14.1 13.3 14.7 1.52 1.47 1.55 580 880 67.6 953 7 14 NOTE 1The diameters equivalent to the standard masses are given correct to the second decimal place, while the ma

41、sses equivalent to the maximum and minimum diameters are correct to the nearest kg for masses of 100 kg/km or more and to the nearest 0.1 kg/km for masses of less than 100 kg/km. NOTE 2The values for the breaking load of wire have been calculated on the basis of a tensile strength of 340 N/mm 2on mi

42、nimum diameter and 465 N/mm 2on maximum diameter. Wires designated GSL. 200 down to GSL. 50 may be delivered in bundles, provided that the weight of any bundle does not exceed 54 kg.BS182:1972 4 BSI 03-2000 Appendix A Factors for the conversion of electrical resistance to 20 C Appendix B Alternative

43、 method of acceptance testing (See 8) B.1 General If agreed between the purchaser and the manufacturer, an alternative method of acceptance testing based on inspection by attributes may be used in which case the procedure detailed in this appendix may replace the requirements of 9 and 13. B.2 Defini

44、tions For the purposes of this appendix the following definitions, additional to those shown in 2, apply: 1) Defective. Any test piece which contains one or more defects. 2) Acceptance number. The maximum number of defectives permitted in a sample. 3) Acceptable quality level. The maximum percentage

45、 of defectives permissible on average in bulk production. B.3 Method In using this scheme the purchaser will specify the degree of non-conformity he can tolerate by quoting an “Acceptable Quality Level” (AQL) in terms of the maximum percentage of defectives permissible on average in the bulk product

46、ion. The quality of the submitted product will be determined by testing a sample selected at random from each batch presented by the contractor. Since judgement of the quality of a particular batch is to be made from a sample there is a risk that the wrong decision to reject or accept may be made. T

47、he size of the sample, the number of defectives permitted in the sample Acceptance Number (AN) and the subsequent risk of rejection of a batch of the Acceptable Quality Level will be determined from the Poisson or Binomial distribution and agreed between the purchaser and the manufacturer. Suitable

48、sampling schemes will be found in Defence Specification DEF 131 “Sampling Procedures and Tables for Inspection by Attributes”. If this method of acceptance testing is adopted, the following provisions shall apply: 1) A sample for mechanical and electrical tests will be taken from each batch. The tes

49、t pieces comprising the sample may be taken from both ends of any selected coil or from the top of any reel(see 9). 2) The whole of a batch of wire shall be deemed not to comply with this British Standard if the number of test pieces in the sample taken from that batch which failed to pass any of the requirements in this standard exceeds the maximum number previously agreed between the purchaser and the manufacturer. Temperature at which resistance is measured C Factor for converting to 20 C 0 1.1077 1 1.1017 2 1.0959 3 1.0901 4 1.0843 5 1.0786 6 1