1、 DEUTSCHE NORMMay 2003DIN 16831-4 ICS 23.040.45 Pipe fittings and joint assemblies for polybutene pressure pipes Type PB 125 Part 4: Dimensions of injection-moulded reducers for socket welding Rohrverbindungen und Formstcke fr Druckrohrleitungen aus Polybuten (PB) PB 125 Teil 4: Reduzierstcke aus Sp
2、ritzguss fr Muffenschweiung, Mae Document comprises 9 pagesTranslation by DIN-Sprachendienst. In case of doubt, the German-language original should be consulted as the authoritative text. No part of this translation may be reproduced without prior permission of DIN Deutsches Institut fr Normung e. V
3、., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, has the exclusive right of sale for German Standards (DIN-Normen). English price group 7 www.din.de www.beuth.de !,k|r“09.06 9728979DIN 16831-4:2003-05 2 Contents Page Foreword. 2 1 Scope . 2 2 Normative references . 2 3 Dimensions and designation
4、. 3 4 Marking 6 Annex A (informative) Explanatory notes 8 Bibliography . 9 Foreword This standard has been prepared by Technical Committee Fittings fr Druckrohre aus Thermoplasten of the Normenausschuss Kunststoffe (Plastics Standards Committee). 1 Scope This standard applies to injection-moulded1)p
5、olybutene (PB) reducers as in DIN 16831-5 for thermo-compression socket welding to polybutene pipes as in DIN 16968 and DIN 16969. The standard specifies the dimensions of fittings for selected pipe outside diameters. NOTE Any relevant European Standards shall be observed. 2 Normative references Thi
6、s standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the titles of the publications are listed below. For dated references, subsequent amendments to or revisions of any of these publi
7、cations apply to this standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to (including any amendments) applies. DIN 16831-5, Pipe fittings and joint assemblies for type PB 125 polybutene pressure pipes General qualit
8、y requirements and testing DIN 16901, Plastics mouldings Tolerances and acceptance conditions for linear dimensions DIN 16968, Polybutene (PB) pipes General quality requirements and testing DIN 16969, Type PB 125 polybutene pipes Dimensions DIN EN ISO 472, Plastics Vocabulary 1) “Injection-moulded”
9、is defined in DIN EN ISO 472. DIN 16831-4:2003-05 3 3 Dimensions and designation 3.1 General The design shown in figure 1 is for illustrative purposes only; however, the dimensions shall be as in tables 1 and 2. Tolerances shall be as specified in DIN 16901, corresponding to tolerance class 160. 3.2
10、 Type R1 reducers Figure 1 Type R1 reducer 3.3 Designation Designation of a type R1 reducer for socket welding, for use with SDR 11 series pipes, for reducing a spigot diameter dII= d3= 25 mm to a pipe outside diameter of d o dI= 20 mm: Reducer DIN 16831 R1 A 25 20 11 DIN 16831-4:2003-05 4 Table 1 D
11、imensions of type A R1 reducers2)Dimensions in millimetres Mean outside diameterbOvalitydMean inside diametercOvalitydSpigot depthfDesign dimension Limit deviation Limit deviation at socket base at socket mouth Limit deviation Limit deviation Socket depthePipe outside diameter as in DIN 16969a of sp
12、igot of welding socket t1t2k1d o dId3= dIImax. d1d2max. min. min. min. 16 20,0 03,0+0,4 15,3 15,5 13,3 14,5 14 16 15, 15, 13, 17 20 25,0 03,0+0,5 19,3 19,5 14,5 16,0 16 20 19,3 19,5,000,6 14,5 20 25 32,0 05,0+0,7 24,1 24,4 6,000,7 16,0 18,1 19 20 19,3 19,5 5,000,6 14,5 24 25 24,1 24,4 16,0 23 32 40,
13、0 05,0+0,8 31,0 31,3 6,000,7 18,1 20,5 20 20 19,3 19,5 5,000,6 14,5 37 25 24,1 24,4 16,0 34 32 31,0 31,3 18,1 32 40 50,0 05,0+1,0 38,9 39,3 6,000,7 20,5 23,5 30 20 19,3 19,5 5,000,6 14,5 41 25 24,1 24,4 16,0 38 32 31,0 31,3 18,1 36 40 38,9 39,0,7 20,5 34 50 63 05,0+1,2 48,9 49,3 23,5 27,4 31 50 48,
14、49, 23, 39 63 75 07,0+1,5 61,7 62,2 27,4 30,0 36 63 61,7 62,6,000,8 27,4 41 75 90 07,0+1,9 72,7 74,0 8,001 30,0 33,0 36 63 61,7 62,2 6,000,8 27,4 49 75 72, 74,0 8,001 30,0 46 90 110 01+2,2 87,4 88,8 101,2 33,0 37,0 42 aNominal size bThe mean outside diameter of the spigot is calculated as the arithm
15、etic mean of two measurements taken at right angles to each other at the mid-depth of the spigot. cThe mean inside diameter is calculated as the arithmetic mean of two measurements taken at right angles to each other at the middle of the socket length. dOvality is the difference between the greatest
16、 and smallest inside diameter, measured on the same plane. eFor type A, where dis 63 mm or less, t1= 0,3 d+ 8,5 mm. For type A, where dis 75 mm or more, t = 0,2 d+ 15 mm. fThe spigot depth corresponds to the socket depth of a welding socket with the same inside diameter. 2) Type A: for unpeeled pipe
17、 ends. DIN 16831-4:2003-05 5 Table 2 Dimensions of type B R1 reducers3)Dimensions in millimetres Mean outside diameterbOvalitydMean inside diametercOvalitydSocket deptheSpigot depthfDesign dimension Limit deviation Limit deviation at socket base at socket mouth Limit deviation Limit deviation Pipe o
18、utside diameter as in DIN 16969aof spigot of welding socket t1t2k1d o dId3= dIImax. d1d2max. min. min. min. 16 20,0 3,000,4 15,3 15,5 13,3 14,5 14 16 15, 15, 13, 17 20 25,0 3,000,5 19,3 19,5 14,5 16,0 16 20 19,3 19,5,000,6 14,5 20 25 32,0 5,000,7 24,1 24,4 6,000,7 16,0 18,1 19 20 19,3 19,5 5,000,6 1
19、4,5 24 25 24,1 24,4 16,0 23 32 40,0 5,000,8 31,0 31,3 6,000,7 18,1 20,5 20 20 19,3 19,5 5,000,6 14,5 37 25 24,1 24,4 16,0 34 32 31,0 31,3 18,1 32 40 50,0 5,001,0 38,9 39,3 6,000,7 20,5 23,5 30 aNominal size bThe mean outside diameter of the spigot is calculated as the arithmetic mean of two measurem
20、ents taken at right angles to each other at the centre of the spigot depth. cThe mean inside diameter is calculated as the arithmetic mean of two measurements taken at right angles to each other at the middle of the socket length, the socket base or mouth. dOvality is the difference between the grea
21、test and smallest inside diameter, measured on the same plane. eFor type B, t = 0,3 d + 8,5 mm. fThe spigot depth corresponds to the depth of a welding socket with the same inside diameter. 3) Type B: for peeled pipe ends, in accordance with manufacturers instructions. DIN 16831-4:2003-05 6 Table 2
22、(continued) Dimensions in millimetres Mean outside diameterbOvalitydMean inside diametercOvalitydSocket deptheSpigot depthfDesign dimension Limit deviation Limit deviation at socket base at socket mouth Limit deviation Limit deviation Pipe outside diameter as in DIN 16969aof spigot of welding socket
23、 t1t2k1d o dId3= dIImax. d1d2max. min. min. min. 20 19,3 19,5 5,000,6 14,5 41 25 24,1 24,4 16,0 38 32 31,0 31,3 18,1 36 40 38,9 39,0,7 20,5 34 50 63,0 5,001,2 48,9 49,3 23,5 27,4 31 50 48,9 49, 23, 40 63 75,0 7,001,5 61,7 62,2 27,4 31,0 37 63 61,7 62,6,000,8 27,4 43 75 90,0 7,001,9 72,9 73,2 6,001 3
24、1,0 35,5 38 63 61,7 62,6,000,8 27,4 53 75 72,9 73,2 6,001 31,0 50 90 110 102,2 87,4 87,8 7,001,2 35,5 41,5 46 aNominal size bThe mean outside diameter of the spigot is calculated as the arithmetic mean of two measurements taken at right angles to each other at the centre of the spigot depth. cThe me
25、an inside diameter is calculated as the arithmetic mean of two measurements taken at right angles to each other at the middle of the socket length, the socket base or mouth. dOvality is the difference between the greatest and smallest inside diameter, measured on the same plane. eFor type B, t = 0,3
26、 d + 8,5 mm. fThe spigot depth corresponds to the depth of a welding socket with the same inside diameter. 4 Marking Marking shall include the minimum details given in table 3, and shall be printed or stamped on fittings so as to remain legible throughout their service life. NOTE The manufacturer sh
27、all not be liable if marking becomes illegible as a result of installation procedures, or of cleaning, or if fittings are painted, scratched or masked. Marking shall not cause any cracking or other damage which could affect the serviceability of the assemblies. If marking is printed on the assemblie
28、s, its colour shall be set off clearly against the background. DIN 16831-4:2003-05 7 Table 3 Required marking details Detail Mark Number of relevant standarda DIN 16831 Manufacturers name or trademark e.g. xyz Diameter of connecting pipe and outside diameter of spigot, d3e.g. 32 e.g. 40 SDRb as in D
29、IN 16969 e.g. SDR 11 Material PB Type, with or without peelinga e.g. A Place and date of productionc c aThis information may be applied directly to the fitting, or be on a label applied to it or the packaging. bNominal standard dimension ratio or pipe series of the appropriate pipe as in DIN 16969.
30、cThe details given may be coded and shall give the production period and site. Marking as in clause 4 shall be implemented for fittings which are not covered by other standards or regulations for specific applications. DIN 16831-4:2003-05 8 Annex A (informative) Explanatory notes DIN 16831 is a seve
31、n-part series of basic standards which are the first German standards dealing with the dimensions and quality requirements for polybutene (PB) fittings. The standards were largely developed on the basis of existing standards on fittings made from other plastics. DIN 16831-4:2003-05 9 Bibliography DI
32、N EN 10204, Metallic products Types of inspection documents DIN EN ISO 1043-1, Plastics Symbols and abbreviated terms Part 1: Basic polymers and their special characteristics (ISO 1043-1:2001) ISO 161-1:1996, Thermoplastics pipes for the conveyance of fluids Nominal outside diameters and nominal pressures Part 1: Metric series ISO 4065:1996, Thermoplastics pipes Universal wall thickness table
