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1、BRITISH STANDARD BS 4853:1989 Specification for Tensional steel strapping UDC 621.798.244:(083.71):620.172:621.753.1 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 07:50:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4853:1989 This British Standard, having been prepared under the direction
2、 of the Packaging and Freight Containers Standards Policy Committee, was published under the authority of the Board of BSI and comes into effect on 28 April 1989 BSI 11-1999 First published June 1972 First revision April 1989 The following BSI references relate to the work on this standard: Committe
3、e reference PKM/572 Draft for comment 87/41493 DC ISBN 0 580 16848 4 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Packaging and Freight Containers Standards Policy Committee (PKM/-) to Technical Committee PKM/572 upon which the follow
4、ing bodies were represented: Adhesive Tape Manufacturers Association British Fibreboard Packaging Association British Footwear Manufacturers Association British Independent Steel Producers Association British Paper and Board Industry Federation British Plastics Federation British Ports Association a
5、nd the National Association of Ports Employers British Steel Industry British Steel Industry (Wire Section) British Telecommunications British Tensional Strapping Association Cordage Manufacturers Institute Department of Trade and Industry Food and Drink Federation Her Majestys Stationery Office Min
6、istry of Defence Packaging and Industrial Films Association Pira (the Research Association for the Paper and Board, Printing and Packaging Industries) Post Office Pressure Sensitive Manufacturers Association Soap and Detergent Industry Association Timber Packaging and Pallet Confederation Amendments
7、 issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 07:50:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4853:1989 BSI 11-1999i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2Definitions1 3Tolerances1 4Tensile s
8、trength2 5Joint strength3 6Marking3 Appendix A Surface finish4 Figure 1 Example of marking3 Publication referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 07:50:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4853:1989 ii BSI 11-1999 Foreword This revision of this B
9、ritish Standard has been prepared under the direction of the Packaging and Freight Containers Standards Policy Committee. It supersedes BS 4853:1972 which is withdrawn and applies to tensional steel strapping suitable for lifting purposes and revises the tensile strengths of other strappings. This s
10、tandard specifies tolerances; specific dimensions for strapping are available from manufacturers. Various finishes are listed in Appendix A but it should be noted that, in addition, other finishes may be obtained which may improve the material for a particular purpose. The finish may affect the mech
11、anical properties and the manufacturers advice should therefore be obtained when finishes other than those listed in Appendix A are selected. Users of tensional steel strapping are recommended to consult BS 1133-15 which gives guidance on its use. A British Standard does not purport to include all t
12、he 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 cover, an inside front cover, pages i and ii
13、, pages 1 to 4, an inside back cover 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. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 07:50:47 GMT+00:00 2006
14、, Uncontrolled Copy, (c) BSI BS 4853:1989 BSI 11-19991 1 Scope This British Standard specifies tolerances and tensile strengths for cold rolled flat strip, hot rolled flat strip and round, oval and flat wire tensional steel strapping for general packaging purposes. It also specifies tolerances, tens
15、ile strengths and the joint strength for cold rolled flat strip suitable for lifting and lashing purposes. Guidance on the surface finishes available is given in Appendix A. NOTEThe title of the publication referred to in this standard is given on the inside back cover. 2 Definitions For the purpose
16、s of this British Standard the following definitions apply. 2.1 tensional steel strapping a specially processed high tensile steel in flat strip, or round, oval or flat wire, applied to packages by machines and tied or sealed while under tension NOTEFlat strapping specifically for lifting and lashin
17、g purposes is available and can be identified by means of special marking (see clause 6). 2.2 flat strapping cold or hot rolled steel strip which has dressed edges for safe handling 2.3 wire strapping steel wire which is either round, oval or flat 2.4 oval wire steel wire which has an elliptical cro
18、ss section 2.5 round wire steel wire which has a circular cross section 2.6 flat wire steel wire which has a rectangular cross section with rounded corners 3 Tolerances 3.1 Cold rolled flat tensional steel strapping The tolerances of cold rolled tensional steel strapping in flat strip form shall be
19、as follows: The tolerances of cold rolled flat tensional steel strapping for lifting and lashing purposes shall be as follows: 3.2 Hot rolled flat tensional steel strapping The tolerances of hot rolled tensional steel strapping in flat strip form shall be as follows: a) width 0.15 mm; b) thickness 0
20、.05 mm. 1) width 0.13 mm; 2) thickness a) width 1.20 mm; b) thickness 0.10 mm. 0 0.076+ mm. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 07:50:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4853:1989 2 BSI 11-1999 3.3 Round wire tensional steel strapping The tolerances of tensional steel
21、 strapping in round wire form shall be as follows: 3.4 Oval wire tensional steel strapping The tolerances of tensional steel strapping in oval wire form shall be as follows: 3.5 Flat wire tensional steel strapping The tolerances of tensional steel strapping in flat wire form shall be as follows: 4 T
22、ensile strength NOTE 1For all types of tensional steel strapping the minimum tensile strength S (in N/mm2) is calculated as follows: where NOTE 2The maximum cross-sectional area is calculated using the maximum dimensions, i.e. the nominal dimensions plus the tolerances. The various minimum tensile s
23、trengths quoted in 4.1 to 4.6 result from specific manufacturing techniques, some of which are designed to accentuate properties other than or in addition to tensile strength. 4.1 Cold rolled flat tensional steel strapping The three minimum tensile strengths of cold rolled tensional steel strapping
24、in flat strip form shall be as follows: 4.2 Cold rolled flat tensional steel strapping for lifting and lashing The minimum and maximum tensile strengths of cold rolled tensional steel strapping in flat strip form for lifting and lashing purposes shall be as follows: 4.3 Hot rolled flat tensional ste
25、el strapping The two minimum tensile strengths of hot rolled tensional steel strapping in flat strip form shall be as follows: diameter a) major axis 0.05 mm; b) minor axis 0.05 mm a) width 0.07 mm; b) thickness 0.02 mm. Lis the breaking load (in kN); Ais the maximum cross-sectional area (in mm2). a
26、) low tensile620 N/mm2; b) medium tensile770 N/mm2; c) high tensile890 N/mm2. a) thickness up to 0.8 mm990 N/mm2 minimum; b) thickness up to 0.8 mm1 170 N/mm2 maximum; c) thickness over 0.8 mm1 060 N/mm2 minimum; d) thickness over 0.8 mm1 265 N/mm2 maximum. a) type 1460 N/mm2; b) type 2770 N/mm2. 0+
27、 0.05 mm. S L103 A - -= Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 07:50:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4853:1989 BSI 11-19993 4.4 Round wire tensional steel strapping The three minimum tensile strengths of tensional steel strapping in round wire form shall be as follow
28、s: 4.5 Oval wire tensional steel strapping The minimum tensile strength of tensional steel strapping in oval wire form shall be as follows: 4.6 Flat wire tensional steel strapping The five minimum tensile strengths of tensional steel strapping in flat wire form shall be as follows: 5 Joint strength
29、The minimum joint strength shall be 90 % of the minimum tensile strength shown in 4.2. NOTEJoint strength is a major factor in the safe use of cold rolled tensional steel strapping in flat strip form used for lifting and lashing. 6 Marking Cold rolled tensional steel strapping in flat strip form for
30、 lifting and lashing purposes shall be marked with one, two or three circles of 20 mm outer diameter at intervals of not greater than 1 m, as shown in Figure 1. Each circle shall contain the initial of the strap manufacturer. a) type 1340 N/mm2; b) type 2490 N/mm2; c) type 3590 N/mm2. type 1740 N/mm
31、2. a) type 1620 N/mm2; b) type 2770 N/mm2; c) type 3930 N/mm2; d) type 41 080 N/mm2; e) type 51 310 N/mm2. NOTE 1The number of circles corresponds to the strapping size and lifting capabilities. NOTE 2Dimensions are in millimetres. Figure 1 Example of marking Licensed Copy: sheffieldun sheffieldun,
32、na, Fri Dec 01 07:50:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4853:1989 4 BSI 11-1999 Appendix A Surface finish A.1 General Tensional steel strapping is obtainable in a choice of surface finishes according to the special requirements necessary for a given application. Users are advised to ch
33、eck with their suppliers that the finish they require can be supplied for the type, size and quality of strapping that they are ordering. The surface finishes generally available are as follows. a) Bright. The natural surface of uncoated steel in a cold rolled condition. The strapping is supplied ei
34、ther lightly oiled or non-lubricated. b) Blued and waxed. The blue finish is imparted by heat which also cleans the surface. Usually a wax coating is added to enhance the ability of the strapping to “flow” round corners and, with certain types of strapping equipment, to improve tensioning efficiency
35、. c) Painted and waxed. Various paints are used to provide a degree of resistance to corrosion or to check chemical reaction between the strapping and the surface of the goods being strapped. d) Electro zinc galvanized. A zinc coating is applied by an electrolytic deposition process to provide a deg
36、ree of resistance to corrosion. e) Hot dipped galvanized. A corrosion resistant zinc coating is applied by immersion in a bath of the molten metal. f) Copper coated. A copper coating is applied by electrolytic deposition. NOTEFor applications requiring a high degree of corrosion resistance, stainles
37、s steel strapping may be used. A.2 Flat strapping For tensional steel strapping in flat strip form the normal commercial surface finishes are: a) bright; b) blued and waxed; c) painted and waxed and galvanized. A.3 Wire strapping For tensional steel strapping wire the normal commercial surface finis
38、hes are: a) bright; b) galvanized and copper coated. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 07:50:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4853:1989 BSI 11-1999 Publication referred to BS 1133, Packaging code1). BS 1133-15, Tensional strapping. 1) Referred to in the foreword
39、only. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 07:50:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 4853:1989 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the U
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