1、STD-BSI BS EN 127b3-ENGL 2UUO Lb2LibbS 0885327 843 BRITISH STANDARD Fibre-cement pipes and fittings for discharge systems for buildings- Dimensions and technical terms of delivery The European Standard EN 127W2 has the status of a British standard ICs 23.040.50; 91.140.80 NO COPYING WITHOUT BSI PERM
2、ISSION EXCEPT AS PERMiTED BY COPYBIGE“ LAW BS EN 12 763:2000 STD-BSI BS EN L27b3-ENGL 2000 lb24bb9 0885330 565 D BS EN 12763:2000 AmdNo. This British Standard, hawig been prepared under the direction of the Sedor Committee for Builduig and Civil Engineering, was published under the authority of the
3、Standards Committee and comes into effect on 15 November Zoo0 Date Comments 0 BSI 11-2000 ISBN O 580 36707 X National foreword This British Standard is the official English language version of EN 12763:2. The UK participation in its preparation was entrusted to Technical Committee WM, Wastewater eng
4、ineering, which has the responsibility to: - aid enquirem to undemtand the text; - present to the responsible European committee any enquiries on the - monitor related intedonai and European developments and promulgate interpretation, or proposals for change, and keep the UK inte Annexes C, D and E
5、are informative. Q BSI 11-2000 STD-BSI BS EN L27b3-ENGL 2000 Lb24bb9 0885334 LOO M Page 4 EN 12763:ZOOO 1 Scope This European Standard applies to fibre-cement pipes, joints and fittings used for sewerage and rainwater discharge systems for buildings where pressure tight joints are required. It defin
6、es general composition, classification, geometrical, mechanical and physical characteristics and quality control. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate plac
7、es in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions 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 refer
8、red to applies (including amendments). ENV 197:1992 Cement - Composition, specifications and conformity criteria - Part 1 : Common cements. EN 476:1997 General requirements for components used in discharge pipes, drains and sewers for gravity systems. EN 681 -1 : 1996 Elastomeric seals - Materials r
9、equirements for pipe joint seals used in water and drainage applications - Part 1: Vulcanized rubber. EN 10088-1 :I 995 Stainless steels - Part 1 : List of stainless steels. EN 10088-2: 1995 Stainless steels - Part 2: Technical delivery conditions for sheetlplate and strip for general purposes. EN I
10、S0 9001 Quality systems - Model for quality assurance in design/development, production, installation and servicing (IS0 9001 :I 994). EN IS0 9002 Quality systems - Model for quality assurance in production, installation and servicing (IS0 9002:1994). IS0 390:1993 Products in fibre-reinforced cement
11、 - Sampling and inspection. IS0 898-1 Mechanical properties of fasteners - Part 1 : Bolts, screws and studs. IS0 898-2 Mechanical properties of fasteners - Part 2: Nuts with specified proof load values - Coarse thread. Q BSI 11-2000 STD-BSI BS EN L27b3-ENGL 2000 W Lb24bb9 0885335 O117 W Page 5 EN 12
12、763:2000 IS0 2602:1980 Statistical interpretation of test results - Estimation of the mean - Confidence interval. IS0 2859-1 : 1989 Sampling procedures for inspection by attributes - Part 1 : Sampling plans indexed by acceptable quality level (AQL) for lot by lot inspection. IS0 3951 :1989 Sampling
13、procedures and charts for inspection by variables for percent non-conforming. IS0 4628 Paints and varnishes - Evaluation of degradation of paint coatings - Designation of intensity, quantity and size of common types of defect. IS0 7253 Paints and varnishes - Determination of resistance to neutral sa
14、lt spray (fog 1. 3 Terms and definitions For the purpose of this standard the following terms and definitions apply. 3.1 nominal diameter (DN) numerical denomination of size of a component, which is a convenient round number approximately equal to the manufacturing dimension in millimetres of the in
15、ternal diameter 3.2 acceptance test test to establish whether a batch of products conforms to a specification of the standard. The test is performed on samples drawn either from continuous production or from a consignment IS0 390:1993 NOTE: Test method, specifications and limit values are specified
16、in this standard. Sampling levels and acceptance criteria are specified in IS0 390. 3.3 type test test for approval of a new product and/or a fundamental change in formulation or method of manufacture, or both. The test is performed on the as delivered product The type test is not to be taken as evi
17、dence of the conformity to specification of products subsequently produced in quantity IS0 390: 1 9931. I 3.4 acceptable quality level (AQL) when a continuous series of batches is considered, the quality level which for the purposes of sampling inspection is the limit of a satisfactory process avera
18、ge NOTE: A sampling scheme with an AQL of 4 YO means that batches containing up to 4 % defective items have a high probability of acceptance. IS0 2859-1 119891 Q BSI 11-2000 Page 6 EN 12763:2000 4 Symbols and abbreviations a DN dl d2 d3 e e1 f 1 r CL C Length of machined ends Length of axes Nominal
19、diameter Internal diameter External diameter of the machined end External diameter of the barrel of the pipe Wall thickness Nominal thickness of the machined end Maximum deviation of straightness Total length of pipe = building length Minimum radius of bends Crushing load 5 Requirements for pipes an
20、d fittings 5.1 General Pipes and fittings shall comply with the requirements of this clause at the stage of delivery. 5.2 General composition Products made of fibre-cement pipes according to this standard shall consist essentially of cement or a calcium silicate formed by chemical reaction of a sili
21、ceous and a calcareous material reinforced by fibres other than asbestos. The cement shall comply with relevant national standards of CEN members and/or ENV 197-1. 5.3 Pipe ends Pipes and fittings shall have both ends plain. NOTE: The pipes can have machined or unmachined ends. 5.4 General appearanc
22、e and finish The pipes shall be straight, uniform and regular. The shape of the finished end shall be fixed by the manufacturer to suit the type of joint used. The end faces of pipes and fittings shall be free from breakouts and machining burrs and shall be perpendicular to the pipe axis. NOTE: If n
23、ecessary, the pipes may be impregnated and/or coated internally and/or externally to meet special working conditions as agreed between manufacturer and customer. The coating and finish should comply with the relevant national standards, if existing. Q BSI 11-2000 Page 7 EN 12763:2000 5.5 Smoothness
24、of bore The internal surface of the pipe shall be regular and smooth. Slight scratches, indentations or small protrusions that do not affect the intended use or efficiency shall be acceptable. 5.6 Geometrical characteristics 5.6.1 Diameters, wall thickness Internal diameters dl and wall thickness e
25、shall be as given in Table 1. For pipes, the symbols for dimensions to be measured are given in Figure 1. External diameters d2 and d3 and tolerances shall be stated by the manufacturer. External diameters d3 shall be observed along the whole length of the pipe, for fittings along the free length U
26、(see Figure 2 and annex E). Table I - Diameters and wall thickness of pipes Nominal diameter DN 50 60 70 80 1 O0 125 150 200 250 300 Internal diameter dl mm 50 60 70 80 I O0 125 150 200 250 300 Tolerances mm I2 I2 I2 I2 12,5 I3 I4 I5 16 I7 Wall thickness emin mm 6 6 6 6 6 7 7 735 895 93 5.6.2 Length
27、 of pipes I I The nominal length I of a pipe is the complete length between the extremities (see Figure I). The nominal length of pipes shall be: 2,O m; 2,5 m; 3,O m; 4 m; 5 m. The tolerance on the length is:;: mm. Q BSI 11-2000 STD*BSI BS EN L27b3-ENGL 2000 lb24bb7 0885338 85b DN 50 to 80 100 to 15
28、0 200 to 300 Page 8 EN 12763:2000 Maxim um deviation f mm 43 1 3,O 1 2,5 I “1 “1 I- I Figure 1 - Pipes, shape of the pipe end and dimensions 5.6.3 Straightness of pipes When measured in accordance with 6.3 the maximum tolerancefon straightness shall not exceed the values given in Table 2. Table 2 -
29、Tolerance on straightness 5.6.4 General design of fittings 5.6.4.1 Length of plain ends For fittings the length of the plain ends shall be at least equal to the jointing length of the coupling. 5.6.4.2 Diameters and wall thickness For fittings the internal diameters dl and the wall thickness shall b
30、e as given in Table I. Outside diameters and tolerances of plain ends shall be compatible with pipes and shall be stated by the manufacturer. 5.6.4.3 Angles for branches and bends Preferred angles for bends and branches are those shown in Table 3. (%i BSI 11-2000 STD-BSI BS EN L27b3-ENGL 2000 = Lb2i
31、bbS 0885339 792 Page 9 EN 12763:2000 Table 3 -Angles for bends and branches For bends 15“ 20“ to 22“ 30 30“ 45“ 87“ to 90“ _ For branches 45“ 87“ to 90“ 5.6.4.4 Radius of bends The minimum radius of bends is Y = 0,5 DN except for bends of DN 200 and angles 70“ where the minimum radius is Y = 0,7 DN
32、(see Figure 2). Figure 2 - Bend (example) 5.6.5 Examples of fittings Examples of fittings and their applications are shown in annex E. The manufacturer shall state in his literature the dimensions for his range of products. 5.7 Mechanical characteristics 5.7.1 Crushing strength The crushing test sha
33、ll be carried out on pipe sizes of DN 100 up to 300 in accordance with 6.4.1. The minimum crushing loads shall not be lower than those stated in Table 4. The crushing strength is given by the crushing load CL in kilonewtons per linear metre in accordance with 6.4.1. Q BSI 11 -2000 STD-BSI BS EN L27b
34、3-ENGL 2000 m Lb24bb7 0885340 904 m 250 300 Page 10 EN 12763:2000 15 18 Table 4 - Minimum values for crushing loads Nominal diameter DN Nominal diameter DN Bending loads N min. Crushing load CL kN/m I 1 O0 I 15 I 125 150 200 15 15 15 NOTE: For pipes of DN 200 to DN 300 a lower crushing load of not l
35、ess than 11 kN/m can be agreed between manufacturer and customer. 5.7.2 Longitudinal bending The test shall be carried out on pipes with a nominal diameter of DNI 150. The minimum values for the longitudinal bending loads in accordance with 6.4.2 shall be as specified in Table 5. Table 5 - Minimum v
36、alues for longitudinal bending loads 50 60 70 80 1 O0 125 150 3 O00 3 O00 4 O00 4 O00 6 500 7 500 10 500 5.8 Physical characteristics 5.8.1 Watertightness Pipes and fittings shall be watertight against an internal hydrostatic pressure of 50 kPa (0,5 bars). Q BSI 11-2000 STD-BSI BS EN L27b3-ENGL 2000
37、 = Lb24bb7 0885341 340 Page 11 EN 12763:2000 When tested in accordance with 6.5.2, pipes and fittings shall exhibit no fissure, leakage or drops of water. 5.8.2 Frost resistance Pipes and fittings shall be resistant to frost. During the test in accordance with 6.5.3, no visible changes which may aff
38、ect the performance in use of the test specimen shall be allowed. 5.8.3 Warm water test When tested in accordance with 6.5.4, the lower confidence limit L calculated for the test specimens shall be not less than 0,75. 5.8.4 Thermal stability Pipe systems shall be tested for thermal stability. Follow
39、ing the test in accordance with 6.5.5 all parts of the pipe system shall be watertight and no part of the pipe system shall show either cracks, damage, deformations or other defects which could affect the performance in use. This test is not necessary for rainwater pipes marked as such. 5.8.5 Resist
40、ance to domestic sewage media When tested in accordance with 6.5.6, pipes shall not show any visible changes which may affect their performance in use. In the comparison with the test specimens (see 6.5.8) the lower confidence limit L shall be not less than 0,75. This test is not necessary for rainw
41、ater pipes marked as such. 5.8.6 Resistance to SO2 When tested in accordance with 6.5.7, a comparison with the initial test specimens is to be made (see 6.5.8). The lower confidence limit L shall be not less than 0,75. This test is not necessary for rainwater pipes marked as such. 5.9 Internal coati
42、ng When tested in accordance with 6.6, the coating shall not show any changes which may affect its performance in use. 5.1 O Bonding stability of adhesive connections When tested in accordance with 6.7, fittings with adhesive connections shall be watertight as specified in 5.8.1 and shall not exhibi
43、t any changes which may affect their performance in use. Q BSI 11 -2000 Page 12 EN 12763:2000 6 Test methods for pipes and fittings 6.1 General 6.1 .I Acceptance tests Acceptance tests shall be carried out at the manufacturers works on pipes and fittings as delivered whenever possible, or on test sp
44、ecimens cut from the pipes. NOTE: The manufacturer can carry out the test as part of the routine quality control system at an earlier stage of maturity. Acceptance tests consist of the following: - visual inspection of finish and marking; - geometrical characteristics; - crushing strength; - Longitu
45、dinal bending. 6.1.2 Type tests The following type tests shall be carried out on pipes and fittings as delivered unless otherwise specified in the test method: - frost test; - warm water test - pipes only; - thermal stability test; - resistance to domestic sewage media - pipes only; - resistance to
46、SO2 test - pipes only; - watertightness test; - test for internal coating; - bonding stability test. When type tests are carried out the product shall also be subjected to the acceptance tests to ensure it complies with the requirements of this standard. 6.2 Geometrical characteristics 6.2.1 General
47、 Dimensions shall be subject to the tolerances as detailed in 5.6. Diameters and thickness of wall shall be measured with a minimum accuracy of 0,l mm, other dimensions shall be measured with a minimum accuracy of I mm. 6.2.2 Internal diameter The internal diameter d, shall be measured at all plain
48、ends of pipes or fittings. Two measurements at 90“ to each other shall be carried out. The average of two measurements shall comply with the requirements of 5.6. Q BSI 11-2000 STD-BSI BS EN 127b3-ENGL 2000 lb24bb7 0885341 113 Page 13 EN 12763:2000 6.2.3 External diameter The external diameter d3 sha
49、ll be measured at least at the plain ends of pipes and fittings and at the centre of the pipes. At each place two measurements shall be taken at 90“ to each other. Each measurement shall comply with the requirements of 5.6. 6.2.4 Wall thickness The minimum wall thickness shall be measured at approximately 20 mm from each end. Each measurement shall comply with the requirements of 5.6.1. 6.2.5 Length of pipe Take the average of two diametrically opposed measurements of the pipe length with an accuracy of 1 mm. 6.3 Straightness of pipes 6.3.1 Test spec
