1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Technical product documentation - Simplified representation of pipelinesPart 1: General rules and orthogonal representationBS EN ISO 64121:2018National forewordThis British Standard is the UK implementation of EN ISO 64
2、121:2018. It is identical to ISO 64121:2017. It supersedes BS EN ISO 64121:1995, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee TDW/4, Technical Product Realization.A list of organizations represented on this committee can be obtained on request to it
3、s secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 97860 9ICS 01.100.99; 01.100.20; 23.040.01Compliance wi
4、th a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 February 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 64121:2018EUROPEAN
5、STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 6412-1February 2018ICS 01.100.99; 23.040.01 Supersedes EN ISO 64121:1994EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018 CEN Ref. No. EN
6、 ISO 64121:2018: EAll rights of exploitation in any form and by any means reserved worldwide for CEN national MembersTechnical product documentation Simplified representation of pipelines Part 1: General rules and orthogonal representation (ISO 64121:2017)Documentation technique de produits Reprsent
7、ation simplifie des tuyaux et lignes de tuyauteries Partie 1: Rgles gnrales et reprsentation orthogonale (ISO 64121:2017)This European Standard was approved by CEN on 22 October 2017.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving t
8、his European Standard the status of a national standard without any alteration. Uptodate lists and bibliographical references concerning such national standards may be obtained on application to the CENCENELEC Management Centre or to any CEN member.This European Standard exists in three official ver
9、sions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.CEN members are the national standards bodies of Austria,
10、 Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, S
11、weden, Switzerland, Turkey and United Kingdom.English VersionEN ISO 6412-1:2018 (E)European forewordThis document (EN ISO 64121:2018) has been prepared by Technical Committee ISO/TC 10“Process plant documentation”.This European Standard shall be given the status of a national standard, either by pub
12、lication of an identical text or by endorsement, at the latest by August 2018, and conflicting national standards shall be withdrawn at the latest by August 2018.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be hel
13、d responsible for identifying any or all such patent rights.This document supersedes EN ISO 64121:1994.According to the CENCENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
14、 Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey a
15、nd the United Kingdom.Endorsement noticeThe text of ISO 6412-1:2017 has been approved by CEN as EN ISO 6412-1:2018 without any modification.2BS EN ISO 64121:2018ISO 6412-1:2017(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 24 General principles . 24.1 Overvi
16、ew 24.2 Representation of pipes 24.3 Scale 24.4 Lines . 24.4.1 Line thickness . 24.4.2 Types of line . 34.4.3 Spacing of lines 34.5 Lettering . 34.6 Dimensioning . 44.7 Tolerances . 55 Crossings and connections . 56 Representation of equipment . 66.1 General . 66.2 Fittings . 66.3 Supports and hange
17、rs . 76.4 Additional provisions 86.5 Adjoining apparatus . 86.6 Direction of flow 86.7 Flanges . 87 Examples . 9Bibliography .11 ISO 2017 All rights reserved iiiContents PageBS EN ISO 64121:2018ISO 6412-1:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federati
18、on of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee
19、. International organizations, governmental and nongovernmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and thos
20、e intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (s
21、ee www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the docu
22、ment will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the
23、 meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.This document was prepared by Te
24、chnical Committee ISO/TC 10, Technical drawings, Subcommittee SC 10, Process plant documentation.This second edition cancels and replaces the first edition (ISO 6412-1:1989), which has been technically revised.The main changes compared to the previous edition are as follows: the normative references
25、 were updated; the document went under editorial revision.A list of all parts in the ISO 6412 series can be found on the ISO website.iv ISO 2017 All rights reservedBS EN ISO 64121:2018ISO 6412-1:2017(E)IntroductionDepending on the information it is intended to convey and the form of representation r
26、equired, a distinction is made between graphical representation by means of orthogonal and that by means of isometric representation.This document deals with general rules used for both representations (orthogonal and isometric). Rules applicable only to isometric representation are given in ISO 641
27、22.For the purposes of this document, all dimensions and tolerances on the drawings have been stencilled in upright lettering. It should be understood that these indications could just as well be written in freehand or inclined (italic) lettering without altering the meaning of the indications.For t
28、he presentation of lettering (proportions and dimensions), see 4.4. ISO 2017 All rights reserved vBS EN ISO 64121:2018This page deliberately left blankTechnical product documentation - Simplified representation of pipelines Part 1: General rules and orthogonal representation1 ScopeThis document spec
29、ifies rules and conventions for the execution of simplified drawings for the representation of all kinds of pipes and pipelines made of all sorts of materials (rigid and flexible).It is used whenever it is necessary to represent pipes or pipelines in a simplified manner.For the purposes of this docu
30、ment, the figures illustrate the text only and should not be considered as design examples.NOTE This document can also be used for the representation of similar installations, such as ventilation or airconditioning systems; in such cases, the term “duct“, etc. is substituted for the term “pipe“.2 No
31、rmative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any
32、amendments) applies.ISO 128 (all parts), Technical drawings General principles of presentationISO 1291, Technical product documentation (TPD) Presentation of dimensions and tolerances Part 1: General principlesISO 12191, Fluid power systems and components Graphical symbols and circuit diagrams Part
33、1: Graphical symbols for conventional use and data-processing applicationsISO 30982, Technical drawings Lettering Part 2: Latin alphabet, numerals and marksISO 35451, Steel tubes and fittings Symbols for use in specifications Part 1: Tubes and tubular accessories with circular cross-sectionISO 5261,
34、 Technical drawings Simplified representation of bars and profile sectionsISO 5455, Technical drawings ScalesISO 64122, Technical product documentation Simplified representation of pipelines Part 2: Isometric projectionISO 6428, Technical drawings Requirements for microcopyingISO 7573, Technical pro
35、duct documentation Parts listsISO 146172, Graphical symbols for diagrams Part 2: Symbols having general applicationISO 146173, Graphical symbols for diagrams Part 3: Connections and related devicesISO 817141, Design of graphical symbols for use in the technical documentation of products Part 1: Basi
36、c rulesINTERNATIONAL STANDARD ISO 6412-1:2017(E) ISO 2017 All rights reserved 1BS EN ISO 64121:2018ISO 6412-1:2017(E)3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.ISO and IEC maintain terminological databases for use in standardization at the fol
37、lowing addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at https:/www.iso.org/obp 3.1orthogonal representationprojection method in which the projectors are at right angles to the projection plane3.2isometric representationprojection method
38、 in which each of the three coordinate axes is inclined at the same angle to the projection plane3.3flow linerepresentation of the flow path of the inlet or outlet streams or of material, energy or energy carriers4 General principles4.1 OverviewIn this clause, all general principles are specified wh
39、ich are common to the methods of projection and to the pictorial representations, as recommended in this document.4.2 Representation of pipesThe flow line representing a pipe (irrespective of its diameter), shall be a single continuous thick line (type A, see Table 1), coinciding with the central li
40、ne of the pipe.Bends may be simplified by extending the straight length of the flow line to the vertex (see Figure 1). However, bends may be shown for the sake of clarity in the form illustrated in Figure 2. In this case, if projections of bends would otherwise have been elliptical, these projection
41、s may be simplified by drawing circular arcs (see Figure 3).4.3 ScaleIf the drawing is to scale, this shall be indicated in accordance with ISO 5455.4.4 Lines4.4.1 Line thicknessIn general, only one thickness of line shall be used. However, in cases where more than one line thickness needs to be use
42、d, the line thicknesses shall be chosen from ISO 12820; the relative proportions of line thicknesses a:b:c shall be 221:. Different line thicknesses shall then be used as follows (see also 4.4.2): line thickness a: main flow lines; line thickness b: secondary flow lines, lettering; line thickness c:
43、 leader lines, dimension lines, etc.2 ISO 2017 All rights reservedBS EN ISO 64121:2018ISO 6412-1:2017(E)4.4.2 Types of lineThe types and thicknesses of line shown in Table 1 shall be used.Table 1Number of the basic type in accordance with ISO 128-20Line type in accordance withISO 128-20Description A
44、pplication0101.2 A b Continuous wide line A1Flow lines and connected parts01.1 B a Continuous narrow lineB1B2B3B4HatchingDimensioningLeader linesIsometric grid lines01.1 C aContinuous narrow freehand lineC1/D1Limits of partial or interrupted views and sections01.1 D aContinuous narrow line with zigz
45、ags0202.2 E b Dashed wide line E1Flow lines specified on other drawing02.1 F a Dashed narrow lineF1F2F3F4FloorWallsCeilingsHoles (hole punchings)0404.1 G aLong dashed dotted narrow lineG1 Centrelines04.3 EJ cLong dashed dotted extrawide lineaEJ1 Contract boundary09 09.1 K aLong dashed doubleshort da
46、shed narrow lineK1K2Outlines of adjacent partsParts situated in front of the cutting planeaFour times the thickness of line type G.4.4.3 Spacing of linesIn accordance with ISO 6428, the space between parallel lines (including hatching) shall not be less than twice the thickness of the heaviest of th
47、ese lines, with a minimum spacing of 0,7 mm.The minimum spacing between adjacent flow lines and between flow lines and other lines should be 10 mm.4.5 LetteringLettering shall be in accordance with ISO 30982; lettering type B vertical is preferred. The line thickness of the lettering shall be the sa
48、me as the line thickness of those tpdsymbols to which the lettering is close or associated in accordance with ISO 817141. ISO 2017 All rights reserved 3BS EN ISO 64121:2018ISO 6412-1:2017(E)4.6 Dimensioning4.6.1 In general, dimensioning shall be in accordance with ISO 1291. Nominal dimensions may be
49、 indicated in accordance with ISO 35451 using the short designation “DN” (see Figure 1).The outer diameter (d) and the wall thickness (t) of pipes may be indicated in accordance with ISO 5261 (see Figure 2). If necessary, a parts list (see ISO 7573) giving additional information on the pipes, including the associated equipment, may be added to the drawing. Lengths shall start from the outer faces of the pipe ends, flanges, or centre of the joint, whenever app
