1、DEUTSCHE NORM November 1994 Fibre-cement pressure pipes and joints English version of DIN EN 512 DIN EN 512 ICs 23.040.30; 23.040.50 Supersedes DIN 19800-2, January 1973 edition. Descriptors: Water supply, fibre-cement pipe, pipe fitting, adaptor, sewerage, drain age. Faserzementprodukte; Druckrohre
2、 und Verbindungen European Standard EN 512: 1994 has the status of a DIN Standard. A comma has been used as the decimal marker. National foreword This standard has been prepared by CEN/TC 164. The responsible German body involved in its preparation was the Normenausschu Wasserwesen (Water Practice S
3、tand- ards Committee), Technical Committee Faserzement-Druckrohre. It should be noted that the production, use and marketing of fibre-cement products containing asbestos (cf. 4.1) is prohib- ited in Germany (see Annex C). The DIN Standards corresponding to the International Standards referred to in
4、clause 2 of the EN are as follows: IS0 Standard DIN Standard IS0 2785 IS0 3951 DIN IS0 3951 DIN 4033, DIN 19630 IS0 2859-1 DIN IS0 2859-1*) Amendments In comparison with DIN 19800-2, January 1973 edition, the following amendments have been made. a) Definitions have been included. b) Two types of fib
5、re-cement pipes are now specified (cf. 4.1). c) Specifications for joints (.e. adaptors) have been included (cf. clause 5). d) More requirements are now specified for marking. e) The standard has been editorially revised. Previous editions DIN 19800-2: 1956-01. 1973-01 Standards referred to (and not
6、 included in Normative references) DIN 4033 Drains and sewers; design and installation DIN 19630 Installation of water pipes (DVGW Code of practice) International Patent Classification F 16 L 009fO8 E 03 F 003/04 G O1 B 005/00 *) At present at the stage of draft. EN comprises 30 pages. Yth Verlag Gm
7、bH, Berlin, has the exclusive right of sale for German Standards (DIN-Normen). DIN EN 512 Engl. Price group 1 05.95 Sales No. 11 1 O EUROPEAN STANDARD NORME EUROPgENNE EUROP, tuyaux pression et joints Verbindungen Faserzementprodukte; Druckrohre und This European Standard was approved by GEN on 1994
8、-08-09. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtain
9、ed on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (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 Central Secret
10、ariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee
11、for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, 8-1050 Brussels O 1994. Copyright reserved to all CEN members. Ref. No. EN 512: 1994 E Page 2 EN 512:1994 Contents Foreword . 3 1 2 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 4 4.1 4.2 4.3 4
12、.4 4.5 4.6 4.7 5 5.1 5.2 5.3 5.4 5.5 5.6 6 7 7.1 7.2 7.3 Scope . 4 Normative references . 4 Definitions . 5 nominal diameter (DN) 5 nominal pressure (PN) 5 test pressure in factory (PT) . 5 bursting pressure (PB) 5 acceptance test 5 type test 5 acceptable quality level (AQL) 6 Pipes 6 Composition 6
13、Classification . 6 General appearance and finish 7 Smoothness of internal surface 8 Characteristics. . 8 Test methods 12 Marking . 23 23 Geometrical characteristics 23 Special joints 23 Physical characteristics . Watertightness 24 Watertightness test . 24 Marking . 25 Joints . 23 Special application
14、s . 26 Quality control . . 26 Factory quality control . 26 Third party certification . 27 Inspection of a consignment of finished products . 27 Annex A (normative) 28 Annex B (informative) Working on-site 29 Annex C (informative) Adeviations 30 Page 3 EN 51 2 : 1994 Foreword This European Standard h
15、as been prepared under a Mandate given to CEN by the Commission of the European Communities and the European Free Trade Association, and supports essential requirements of EC Directive(s). This European Standard was prepared by Working Group 6 under the direction of CEN Technical Committee CEN/TC 16
16、4 “Water Supply“, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a National Standard, either by publication of an identical text or by endorsement, at the latest by February 1995, and conflicting national standards shall be withdrawn at the latest by F
17、ebruary 1995. This European Standard was prepared by Working Group 6 under the direction of CEN Technical Committee TC 164 “Water Supply“. This standard will be brought in line with pr EN 805 Water supply - Requirements for external systems and components“ prepared by CEN/lWNVG 1, when issued. In th
18、is standard a distinction has been made between product appraisal (type tests) and routine quality control requirements (acceptance tests). Attention is drawn to the need for observance of EC and/or EFTA and national legal requirements restricting the use of certain materials and to the related mark
19、ing and labelling requirements. Fibre-cement pressure pipes and joints which are in permanent or in temporary contact with water intended for human consumption shall not adversely affect the quality of the drinking water and do not contravene the EC Directives and EFTA Regulations on the quality of
20、drinking water. The performance of a network constructed with these products depends not only on the properties of the product as required by this standard, but also on the design, construction and performance of the network as a whole in relation to the environment and conditions of use (standards
21、covering these matters are in preparation). According to the CENXENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain,
22、 Sweden, Switzerland, United Kingdom. Page 4 EN 512: 1994 1 Scope This standard specifies the characteristics of fibrecement pipes and joints for use under pressure for conveying potable and non potable water and sewage. It is concerned with composition, classification, geometrical, mechanical and p
23、hysical characteristics, acceptance tests and type tests. NOTE : Other media may be conveyed provided it is compatible with the fibre-cement pipes and joints. A full discussion should take place between the customer and the manufacturer to determine if the pipes and joints need additional protection
24、. 2 Normative references This European standard incorporates by dated or undated reference, provisions from other publications. These nonnative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revi
25、sions of any of these publications apply to this European standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. ENV 197-1 : 1992 pr EN 805 pr EN 1295 EN29001 : 1990 EN 29002 : 1990 IS0390 : 1993 IS02785 : 198
26、6 IS0 2859-1 1989 IS03951 1989 IS0 7337 : 1984 Cement - Composition, specifications and conformity cntera - Part 1 : Common cements Water supply - Requirements for external systems and components Structural design of buried pipelines under various conditions of loading Quality systems - Model for qu
27、ality assurance in design, development, production, installation and sewicing Quality systems - Model for quality assurance in production and installation Products in fibre reinforced cement - Sampling and inspection Directives for selection of asbestos-cement pipes subject to external load with or
28、without internal pressure Sampling procedures for inspection by attributes - Part 1 : Sampling plans indexed by acceptable quality level (AQL) for lot-by-lot inspection Sampling procedures and charts for inspection by variables for percent nonconforming Asbestos reinforced cement products - Guidelin
29、es for on-site work practices Page 5 EN 51 2 : 1994 3 Definitions For the purposes of this standard the following definitions apply : 3.1 nominal diameter (DN) A numerical designation of size of a component, which is a convenient round number approximately equal to the manufacturing dimension in mm
30、of the internai diameter. 3.2 nominal pressure (PN) A numerical designation of pressure used for reference purposes related to the mechanical characteristics of a component. 3.3 test pressure in factory (PT) Value of the hydrostatic pressure to which the components are tested in the factory accordin
31、g to 4.6.4. 3.4 bursting pressure (PB) Value of the hydrostatic pressure at which a component fails when tested in the factory according to 4.6.5. 3.5 acceptance test Test to establish whether a batch of products conforms to a specification. The tests are performed on samples drawn either from conti
32、nuous production or from a consignment. NOTE : Test methods, specification and limit values are given in this standard. Sampling levels and acceptance criteria are defined in IS0 390. 3.6 typetest Test carried out for the approval of a new product and/or when a fundamental change is made in formulat
33、ion and/or method of manufacture the effects of which cannot be predicted on the basis of previous experience. The test is performed on the as delivered product; it is required to demonstrate conformity of the generic product to a specification but is not required for each production batch. Page 6 E
34、N 512: 1994 3.7 acceptable quality level (AQL) The quality level which, in a sampling plan corresponds to a specified and relatively high probability of acceptance. It is the maximum percent defective (or maximum number of defects per 100 nits) that for purposes of sampling inspection can be conside
35、red satisfactory as a process average. NOTE : A sampling scheme with an AQL of 4 % eans that batches containing up to 4 % efective items have a high probability of acceptance. 4 Pipes 4.1 Composition Fibre-cement pipes shall consist essentially of cement or a calcium silicate formed by a chemical re
36、action of a siliceous and a calcareous material reinforced by fibres. The cement shall comply with relevant national standards of CEN Members and/or ENV 197-1. NOTE : Other components which are compatible with the composite and have no negative influence on the performance in use of the product, may
37、 be added. Two types of fibre reinforced cement pipes are included in this standard : - type AT (Asbestos Technology) for products the formulation of which contains chrysotile asbestos : - type NT (Non-asbestos Technology) for products reinforced by other fibres and not containing asbestos. For pipe
38、s of type AT, all the requirements of this standard shall be fulfilled. For pipes of type NT, all the requirements of this standard shall be fulfilled and, in addition, evidence of long term performance of the product shall be given by a technical agreement. 4.2 Classification 4.2.1 Pipes of nominal
39、 diameter up to DN 1 O00 Pipes of nominal diameter up to DN 1 O00 are classified according to the nominal pressure (PN) given in table 1 : Table 1 : Pressure classification NOTE : The preferred nominal pressures are without brackets. Pipes of higher nominal pressure can be delivered by agreement bet
40、ween manufacturer and purchaser. Page 7 EN 512:1994 ON from 50 to 700 from 125 to 200 from 250 to 500 from 600 to 1 O00 The relationship between the bursting pressure (PB) expressed in hundred of kilopascals (bars) and the nominal pressure (PN) and the relationship between the test pressure in the f
41、actory (PT) expressed in hundred of kilopascals (bars) and the nominal pressure (PN) shall be not less than the values indicated in table 2 : PB/PN PT/PN 4,O 2-0 33 2-0 3,o 2,o 2,s 1,67 Table 2 : Pressure relationship The purchasers engineer shall decide upon the nominal pressure of pipe to be used
42、in relation to the hydraulic working pressure and other conditions of laying and of operation he has determined. Pipes subjected to external loads shall be calculated according to the relevant national standard transposing the corresponding EN standard if existing, failing this to IS0 2785. 4.2.2 Pi
43、pes of nominal diameters exceeding DN 1 O00 Pipes of nominal diameters exceeding DN 1 O00 are not classified in the same way as defined in 4.2.1. They are designed to suit specific requirements of any particular pipeline. The purchaser s engineer shall provide the manufacturer with all required data
44、 for the design of a suitable pipe. The design shall take into account the external loads according to the relevant national standard transposing the corresponding EN standard if existing, failing this to IS0 2785 and shall be subject to the approval of the purchasers engineer. The relationship betw
45、een the bursting pressure (PB) expressed in hundred of kilopascals (bar) and the nominal pressure (PN) shall not be less than 2,s and the relationship between the test pressure (PT) in the factory expressed in hundred of kilopascals (bar) and the nominal pressure (PN) shall not be less than 1,67. 4.
46、3 General appearance and finish The pipes shall be straight, uniform and regular. The shape of the finished ends shall be fixed by the manufacturer to suit the type of joint used. NOTE : The ends may be machined on their outer surfaces (see figure 1). Page 8 EN 512:1994 The end faces shall be free f
47、rom breakout and machining burrs. The parts of the pipe were the rubber jointing rings are located shall be free from irregularities which could affect the watertightness of the joint. NOTE : If necessary, the pipes may be impregnated and/or coated internally and/or externally to meet special workin
48、g conditions as agreed between manufacturer and customer. The coating and finish should comply with the relevant national standards (transposing the EN standard), if existing. 4.4 Smoothness of internal surface The internal surface of the pipe shall be regular and smooth. Slight scratches, indentati
49、ons or small protrusions that do not affect the intended use or efficiency shall be acceptable. 4.5 Characteristics 4.5.1 Geometrical characteristics 4.5.1.1 Nominal diameter (DN) The list of nominal diameters is stated in table 3 ; the diameters without brackets are preferred. Table 3 : Nominal diameters (DN) (50) (60) (80) 1 O0 125 150 (1 75) 200 250 300 400 450 500 600 700 800 (350) 4.5.1.2 Internal diameter 900 1 O00 (1 100) 1200 (1 300) 1 400 1 500 1 600 (1 700) (1 800) (1 900) (2 000) (2 100) (2 200) (2 300) (2 400) (2 500) When measured in accordance with 4.6.3.1 the internal
