BS4825-1-1991

ID

B4761A0DE7AE41A8A500EAC9C9253724

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0.16

页数:

13

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pdf

日期:

2013-6-1

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Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 28 April 2003, Uncontrolled Copy, (c) BSI,British Standard,A single copy of this British Standard is licensed to,Wang Bin,28 April 2003,This is an uncontrolled copy. Ensure use of the most,current version of this document by searching British,Standards Online at bsonline.techindex.co.uk,BRITISH STANDARD BS 4825-1:,1991,Incorporating,Amendment No. 1,Stainless steel tubes,and fittings for the food,industry and other,hygienic applications —,Part 1: Specification for tubes, ,  ,,,,, , ,Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 28 April 2003, Uncontrolled Copy, (c) BSI,BS 4825-1:1991,This British Standard, having,been prepared under the,direction of the Piping Systems,Components Standards Policy,Committee, was published,under the authority of the,Standards Board and comes into,effect on 31 January 1992,. BSI 21 January 2003,The following BSI references,relate to the work on this,standard:,Committee reference PSE 8,Draft for comment 88 72919 DC,ISBN 0 580 19358 6,Committees responsible for this,British Standard,The preparation of this British Standard was entrusted by the Piping Systems,Components Standards Policy Committee (PSE/-) to Technical Committee,PSE/8, upon which the following bodies were represented:,Adhesive Tape Manufacturers’ Association,British Compressed Air Society,British Gas plc,British Malleable Tube Fittings Association,British Steel Industry,British Valve and Actuator Manufacturers’ Association,British Welded Steel Tube Association,Engineering Equipment and Materials Users’ Association,Food and Drink Federation,Institution of Civil Engineers,Institution of Gas Engineers,Institution of Water and Environmental Management,Large Diameter Steel Tube Association,Mechanical Handling Engineers’ Association,Stainless Steel Fabricators’ Association of Great Britain,Steel Tube Fittings Manufacturers’ Technical Association,Water Companies Association,Water Research Centre,Water Services Association of England and Wales,Coopted member,The following bodies were also represented in the drafting of the standard,through subcommittees and panels:,Brewers Society,Dairy Trade Federation,Institution of Production Engineers,Milking Machine Manufacturers’ Association,Amendments issued since publication,Amd. No. Date Comments,14042 21 January 2003 Revision of tolerance level in 5.2,Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 28 April 2003, Uncontrolled Copy, (c) BSI,BS 4825-1:1991,. BSI 21 January 2003 i,Contents,Page,Committees responsible Inside front cover,Foreword ii,1 Scope 1,2 Information to be supplied by the purchaser 1,3 Materials and manufacture 1,4 Dimensions 2,5 Tolerances 3,6 Surface finish 3,7 Manufacturer’s certificate 3,8 Marking 4,Appendix A Information to be supplied by the purchaser in the,enquiry and/or order 5,Appendix B Purchaser options 5,Table 1 — Material grades 1,Table 2 — Dimensions of tubes 2,Table 3 — Surface finish of tubes 3,Publication(s) referred to 7,Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 28 April 2003, Uncontrolled Copy, (c) BSI,BS 4825-1:1991,ii . BSI 21 January 2003,Foreword,This Part of BS 4825 has been prepared under the direction of the Piping Systems,Components Standards Policy Committee. It is a revision of BS 4825-1:1972,which is withdrawn.,BS 4825 is published in five Parts:,— Part 1: Specification for tubes;,— Part 2: Specification for bends and tees;,— Part 3: Specification for clamp type couplings;,— Part 4: Specification for threaded (IDF type) couplings;,— Part 5: Specification for recessed ring joint type couplings.,This Part of BS 4825 incorporates the range of sizes greater than 101.6 mm as,specified in ISO 2037, published by the International Organization for,Standardization. Sizes up to and including 101.6 mm are direct metric,equivalents of the range of imperial sizes and wall thicknesses preferred by,United Kingdom industry.,The essential differences between this Part of BS 4825 and BS 4825-1:1972 are,as follows.,a) A greater selection of materials is given.,b) Sizes up to and including 101.6 mm outside diameter are exact metric,equivalents of imperial sizes of tube.,c) Alternative thicknesses of tube of 1.6 mm and 1.2 mm have been included in,the range from 25.4 mm to 50.8 mm outside diameter.,d) The tolerance band for exact lengths has been reduced.,e) Marking requirements are given in greater detail.,This publication does not purport to include all the necessary provisions of a,contract. Users are res……

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