EN 12842:2012
(Main)Ductile iron fittings for PVC-U or PE piping systems - Requirements and test methods
Ductile iron fittings for PVC-U or PE piping systems - Requirements and test methods
This European Standard specifies the requirements and associated test methods applicable to ductile iron fittings, ductile iron and mild steel couplings and flange adaptors and their joints to be used with poly(vinyl chloride) (PVC-U) pipes or polyethylene (PE) pipes. It is in conformity with EN 1452-1 to -5, ENV 1452-6 and -7 and EN 12201-1 to -5 respectively, for the construction of pipelines:
- to convey water (e.g. water intended for human consumption);
- with or without pressure;
- to be installed below or above ground, inside or outside buildings.
This European Standard is not intended to cover sewerage applications, where additional requirements may be necessary.
This European Standard is applicable to fittings which are:
- manufactured with socketed, flanged or spigot ends;
- supplied externally and internally coated;
- suitable for PE and PVC-U pipes with fluid temperatures between 0°C and 25°C, excluding frost, and for pressures up to 16 bar (PFA). For higher temperatures (up to 45°C for PVC-U or 40°C for PE) the PFA is derated as given in EN 1452 and EN 12201;
- not intended for use in areas subjected to reaction to fire regulations.
NOTE 1 This does not preclude special arrangements for the products to be used at higher temperatures. Temperature limitations and pressure limitations are those coming from the PVC-U or PE pipes.
This European Standard covers ductile iron fittings, couplings and flange adaptors cast by any type of foundry process or manufactured by fabrication of cast components, as well as corresponding joints, in a size range extending from DN 60 to DN 700, to be used with pipes of external diameter from 63 mm to 710 mm.
As long as no equivalent European Standard exists for mild steel accessories, this European Standard also covers couplings and flange adaptors for use with PVC-U and PE pipes which are fabricated partly or entirely from mild steel as well as corresponding joints, in a size range extending from DN 60 to DN 700, to be used with pipes of external diameter from 63 mm to 710 mm.
This European Standard specifies requirements for materials, dimensions and tolerances, mechanical properties and standard coatings. It also gives minimum performance requirements for all components, including restrained and non-restrained flexible joints. Joint design and gasket shapes are outside the scope of this standard.
This European Standard does not cover fittings, couplings and flange adaptors intended to be used with different pipe materials other than PVC-U and PE.
NOTE 2 Fittings, couplings and flange adaptors complying with the requirements of this European Standard for PVC-U also usually meet the requirements for PVC-O and PVC-A pipes. Where this is not the case, the manufacturer is expected to declare this in the relevant literature.
NOTE 3 In this European Standard, all pressures are relative pressures, expressed in bars (100 kPa = 1 bar).
Duktile Gussformstücke für PVC-U oder PE-Rohrleitungssyteme - Anforderungen und Prüfverfahren
Diese Europäische Norm legt die Anforderungen und zugehörigen Prüfverfahren für Formstücke aus duktilem Gusseisen, für Kupplungen und Flanschadapter aus duktilem Gusseisen und unlegiertem Stahl (Weichstahl, Bau¬stahl) und für deren Verbindungen fest, die mit Rohren aus Polyvinylchlorid (PVC U-Rohren) oder Polyethylen (PE) verwendet werden. Dies gilt in Übereinstimmung mit EN 1452 1 bis EN 1452 5, ENV 1452 6 und ENV 1452-7 bzw. EN 12201 1 bis EN 12201 5 für den Rohrleitungsbau:
- zum Transport von Wasser (z. B. Wasser für den menschlichen Gebrauch);
- mit oder ohne Druck;
- oberirdisch oder erdüberdeckt, innerhalb oder außerhalb von Gebäuden.
Diese Europäische Norm ist nicht für Abwasseranwendungen vorgesehen, für die zusätzliche Anforderungen erforderlich sein können.
Diese Europäische Norm ist auf Formstücke anwendbar, die:
- mit Muffenenden, Flanschenden oder Spitzenden hergestellt sind;
- mit einer Beschichtung außen und innen geliefert werden;
- für PE- und PVC U-Rohre mit Fluidtemperaturen zwischen 0 °C und 25 °C, Frost ausgeschlossen, und für Drücke bis 16 bar (PFA) geeignet sind. Bei höheren Temperaturen (bis 45 °C für PVC U-Rohre oder 40 °C für PE-Rohre) ist der PFA, wie in EN 1452 und EN 12201 ange¬geben, herabzusetzen;
- nicht für die Anwendung in Bereichen vorgesehen sind, die Vorschriften zum Brandverhalten unterliegen.
ANMERKUNG 1 Dies schließt Sondervereinbarungen für Produkte, die bei höheren Temperaturen anzuwenden sind, nicht aus. Einschränkungen für Temperatur und Druck ergeben sich aus den Eigenschaften der PVC U- oder PE-Rohre.
Diese Europäische Norm gilt für Formstücke, Kupplungen und Flanschadapter aus duktilem Gusseisen, die nach einem beliebigen Gießverfahren gegossen oder aus gegossenen Einzelteilen hergestellt werden, sowie die zugehörigen Verbindungen, für den Nennweitenbereich von DN 60 bis DN 700, anzuwen¬den für Rohre mit einem Außendurchmesser von 63 mm bis 710 mm.
Solange keine gleichwertige Europäische Norm für Zubehörteile aus unlegiertem Stahl besteht, gilt diese Europäische Norm auch für Kupplungen und Flanschadapter für die Anwendung mit PVC U- und PE-Rohren, die teilweise oder vollständig aus unlegiertem Stahl hergestellt sind, sowie für die zugehörigen Verbindungen, für den Nennweitenbereich von DN 60 bis DN 700, anzuwenden für Rohre mit einem Außen-durchmesser von 63 mm bis 710 mm.
Diese Europäische Norm legt die Anforderungen an Werkstoffe, Maße und Grenzabweichungen, mecha-nische Eigenschaften und Standardbeschichtungen fest. Sie enthält auch Mindest-Leistungsanforderungen für alle Rohrleitungsteile, einschließlich längskraftschlüssiger und nicht längskraftschlüssiger beweglicher Verbin¬dungen. Die Ausführung der Verbindungen und die Formen der Dichtungen fallen nicht in den Anwendungs¬bereich dieser Norm.
Diese Europäische Norm gilt nicht für Formstücke, Kupplungen und Flanschadapter, die für Rohre aus anderen Werkstoffen als PVC U und PE vorgesehen sind.
ANMERKUNG 2 Formstücke, Kupplungen und Flanschadapter, die den Anforderungen nach dieser Europäischen Norm für PVC U entsprechen, erfüllen im Allgemeinen auch die Anforderungen für PVC O- und PVC A Rohre. Andernfalls wird vom Hersteller erwartet, dies in den maßgeblichen Unterlagen angeben.
ANMERKUNG 3 In dieser Europäischen Norm sind alle Drücke relative Manometerdrücke, angegeben in bar (100 kPa 1 bar).
Raccords en fonte ductile pour systèmes de canalisations en PVC-U ou en PE - Prescriptions et méthodes d'essai
La présente Norme européenne décrit les prescriptions et les méthodes d'essai associées, applicables aux raccords en fonte ductile, manchons et adaptateurs de bride en fonte ductile et en acier doux, ainsi que leurs assemblages, à utiliser avec les tuyaux en polychlorure de vinyle (PVC-U) ou en polyéthylène (PE). Elle est conforme aux normes EN 1452-1 à -5, ENV 1452-6 à -7 et EN 12201-1 à -5 respectivement, pour la construction de canalisations :
- pour transporter de l'eau (par exemple de l'eau destinée à la consommation humaine) ;
- avec ou sans pression ;
- pour être installés dans le sol ou en aérien, à l'intérieur ou à l'extérieur des bâtiments.
Cette Norme européenne ne couvre pas les applications d'assainissement, où des prescriptions supplémentaires peuvent être nécessaires.
Cette Norme européenne) est applicable aux raccords qui sont :
- fabriqués avec des extrémités à emboîture, à bride ou à bout uni ;
- livrés revêtus extérieurement et intérieurement ;
- utilisables pour les tuyaux en PVC-U et en PE avec des températures de fluide comprises entre 0 °C et 25 °C, gel exclu, et pour des pressions pouvant atteindre 16 bar (PFA). Pour des températures supérieures (jusqu'à 45 °C pour le PVC-U ou 40 °C pour le PE) la PFA est détimbrée conformément à l'EN 1452 et à l'EN 12201 respectivement ;
- non destinés à l'usage dans des domaines sujets à une réglementation sur les risques d'incendie.
NOTE 1 Ceci n'exclut pas les dispositions spéciales permettant d'utiliser les produits à des températures plus élevées. Les limitations de température et de pression sont celles qui proviennent des tuyaux en PVC-U ou en PE.
Cette Norme européenne traite des raccords, manchons et adaptateurs de bride en fonte ductile, coulés par tout procédé de fonderie ou fabriqués à partir de composants moulés, ainsi que les assemblages correspondants, pour la gamme des DN 60 à DN 700, à utiliser avec des tuyaux de diamètre extérieur allant de 63 mm à 710 mm.
Dans la mesure où aucune Norme européenne équivalente n'existe pour les accessoires en acier doux, la présente Norme européenne traite également des manchons et adaptateurs de bride à utiliser avec les tuyaux en PVC-U ou en PE fabriqués à partir d'acier doux, ainsi que les assemblages correspondants, pour la gamme des DN 60 à DN 700, à utiliser avec des tuyaux de diamètre extérieur allant de 63 mm à 710 mm.
Cette Norme européenne décrit les prescriptions relatives aux matériaux, aux dimensions et tolérances, aux propriétés mécaniques et aux revêtements de base. Elle indique également des prescriptions de performance minimales pour tous les composants, y compris les assemblages flexibles verrouillés ou non. La conception des assemblages et la géométrie des garnitures de joint ne font pas partie du domaine d'application de cette norme.
Cette Norme européenne ne traite pas des raccords, manchons et adaptateurs à bride destinés à être utilisés avec des matériaux de canalisations autres que le PVC-U et le PE.
NOTE 2 Les raccords, manchons et adaptateurs à bride conformes aux prescriptions de cette Norme européenne pour le PVC-U satisfont généralement aux prescriptions des tuyaux en PVC-O et PVC-A. Si ce n'est pas le cas, le fabricant est tenu de le déclarer dans la documentation concernée.
NOTE 3 Dans cette Norme européenne, toutes les pressions sont des pressions relatives exprimées en bars (100 kPa = 1 bar).
Fitingi iz duktilne litine za PVC-U ali PE cevne sisteme - Zahteve in preskusne metode
Ta evropski standard določa zahteve in z njimi povezane preskusne metode za fitinge iz duktilne litine, spoje in prirobnične prilagoditve ter njihove stike iz duktilne litine in mehkega jekla, ki jih je treba uporabljati s cevmi iz polivinilklorida (PVC-U) ali polietilena (PE). Je v skladu s standardi EN 1452-1 do-5, ENV 1452-6 in - 7 ter EN 12201-1 do -5 za gradnjo cevovodov: – za prenos vode (npr. pitne vode); – tlačnih ali netlačnih; – za podzemno ali nadzemno namestitev v stavbah ali na prostem. Ta evropski standard ne zajema področja kanalizacije, za katero so lahko potrebne dodatne zahteve. Ta evropski standard se uporablja za fitinge, ki so: – proizvedeni z zaključki s spoji z vtičnimi obojkami, prirobnicami ali koncem cevi, ki se prilega drugi cevi; dobavljeni z zunanjim in notranjim premazom; – primerni za polivinilkloridne ali polietilenske cevi s temperaturami tekočine med 0 °C in 25 °C, brez zamrznitve, in tlakom do 16 barov (PFA). Za višje temperature (do 45 °C za PVC-U ali 40 °C za PE) je PFA omejen, kot je določeno v standardih EN 1452 in EN 12201; – ni za uporabo na področjih, za katere veljajo predpisi o požarni odpornosti. Ta evropski standard zajema fitinge iz duktilne litine, spoje in prirobnične prilagoditve, ulite s katerim koli livarskim postopkom ali proizvedene z izdelavo litih sestavnih delov, ter ustrezne stike velikosti od DN 60 do DN 700, ki se uporabljajo s cevmi z zunanjim premerom od 63 mm do 710 mm. Če za sklope iz mehkega jekla ni enakovrednega evropskega standarda, ta standard zajema tudi spoje in prirobnične prilagoditve, ki se uporabljajo s polivinilkloridnimi in polietilenskimi cevmi in so v celoti ali delno izdelani iz mehkega jekla, ter ustrezne stike velikosti od DN 60 do DN 700, ki se uporabljajo s cevmi z zunanjim premerom od 63 mm do 710 mm. Ta evropski standard določa zahteve za materiale, dimenzije in tolerance ter mehanske lastnosti in standardne premaze. Določa tudi zahteve glede zmogljivosti za vse sestavne dele, vključno s pritrjenimi in nepritrjenimi gibljivimi stiki. Konstruiranje stikov in oblike tesnil ne spadajo na področje uporabe tega standarda. Ta evropski standard ne zajema fitingov, spojev in prirobničnih prilagoditev za uporabo z različnimi materiali za cevi, ki niso iz polivinilklorida in polietilena.
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Fitingi iz duktilne litine za PVC-U ali PE cevne sisteme - Zahteve in preskusne metodeDuktile Gussformstücke für PVC-U- oder PE-Rohrleitungssysteme - Anforderungen und PrüfverfahrenRaccords en fonte ductile pour systèmes de canalisations en PVC-U ou en PE - Prescriptions et méthodes d'essaiDuctile iron fittings for PVC-U or PE piping systems - Requirements and test methods23.040.40Kovinski fitingiMetal fittingsICS:Ta slovenski standard je istoveten z:EN 12842:2012SIST EN 12842:2012en,fr,de01-oktober-2012SIST EN 12842:2012SLOVENSKI
STANDARDSIST EN 12842:20011DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12842
August 2012 ICS 23.040.40 Supersedes EN 12842:2000English Version
Ductile iron fittings for PVC-U or PE piping systems - Requirements and test methods
Raccords en fonte ductile pour systèmes de canalisations en PVC-U ou en PE - Prescriptions et méthodes d'essai
Duktile Gussformstücke für PVC-U oder PE-Rohrleitungssyteme - Anforderungen und Prüfverfahren This European Standard was approved by CEN on 23 June 2012.
CEN members are bound to comply with the CEN/CENELEC 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 obtained on application to the CEN-CENELEC Management Centre 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 CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12842:2012: ESIST EN 12842:2012
As long as no equivalent European Standard exists for mild steel accessories, this European Standard also covers couplings and flange adaptors for use with PVC-U and PE pipes which are fabricated partly or entirely from mild steel as well as corresponding joints, in a size range extending from DN 60 to DN 700, to be used with pipes of external diameter from 63 mm to 710 mm.
This European Standard specifies requirements for materials, dimensions and tolerances, mechanical properties and standard coatings. It also gives minimum performance requirements for all components, including restrained and non-restrained flexible joints. Joint design and gasket shapes are outside the scope of this standard. This European Standard does not cover fittings, couplings and flange adaptors intended to be used with different pipe materials other than PVC-U and PE. NOTE 2
Fittings, couplings and flange adaptors complying with the requirements of this European Standard for PVC-U also usually meet the requirements for PVC-O and PVC-A pipes. Where this is not the case, the manufacturer is expected to declare this in the relevant literature.
NOTE 3 In this European Standard, all pressures are relative pressures, expressed in bars (100 kPa = 1 bar). SIST EN 12842:2012
DN/OD alphanumeric designation of size for components of a pipework system, which is used for reference purposes
Note 1 to entry: It comprises the letters DN followed by a dimensionless whole number which is indirectly related to the physical size, in millimetres, of the bore or outside diameter of the end connections. Note 2 to entry:
Adapted from EN ISO 6708:1995, definition 2.1. Note 3 to entry: Plastic pipes are only defined as DN/OD. SIST EN 12842:2012
maximum hydrostatic pressure that a component is capable of withstanding continuously in service [SOURCE: EN 805:2000] Note 1 to entry: In EN 1452 and EN 12201, the term nominal pressure (PN) at 20°C is used in place of PFA. 3.18 leak tightness test pressure pressure applied to a component during manufacture in order to ensure its leak tightness 3.19 allowable maximum operating pressure (PMA) maximum pressure occurring from time to time, including surge, that a component is capable of withstanding in service [SOURCE: EN 805:2000] 3.20 allowable test pressure (PEA) maximum hydrostatic pressure that a newly installed component is capable of withstanding for a relatively short duration, in order to ensure the integrity and tightness of the pipeline [SOURCE: EN 805:2000] Note 1 to entry: This test pressure is different from the system test pressure (STP), which is related to the design pressure of the pipeline and is intended to ensure its integrity and leak tightness. 3.21 batch quantity of castings from which a sample is taken for testing purposes during manufacture 3.22 performance test proof of design test which is done once and is repeated only after change of design SIST EN 12842:2012
dn Minimum wall thickness for material grade as specified in 4.3.2 mm dn ≤ 315 3 315 < dn ≤ 560 4 560 < dn ≤ 710 5 For higher grade materials, it is permissible to use thicknesses less than those specified in Table 2 with an absolute minimum of 3mm. 4.2.3 Length The lengths (see 3.23) of fittings shall be as given in the manufacturers' catalogues taking into account the minimum lengths given in the tables of Clause 8. SIST EN 12842:2012
Key 1 maximum joint gap 2 flange adaptor 3 coupling Figure 1 Jointing gap for couplings and flange adaptors SIST EN 12842:2012
4.3 Material characteristics 4.3.1 Ductile iron 4.3.1.1 Tensile properties Ductile iron fittings, couplings and flange adaptors shall have a minimum tensile strength of 420 MPa and a minimum elongation after fracture of 5 %. The tensile strength shall be tested in accordance with 6.1. 4.3.1.2 Hardness The Brinell hardness, when measured in accordance with 6.2, shall not exceed 250 HBW. For components manufactured by welding, a higher Brinell hardness is allowed in the heat-affected zone of the weld. SIST EN 12842:2012
polymeric (e.g. epoxy/polyamide); zinc based corrosion protection; PTFE; a combination of the above.
4.4 Coatings 4.4.1 General All fittings, couplings and flange adaptors shall be delivered with an external and internal epoxy coating in compliance with EN 14901. Alternatively, the following coatings may also be supplied: a) External coatings: 1) polyamide in accordance with EN 10310; 2) polyurethane in accordance with EN 15189; 3) enamel1). b) Internal coatings (linings): 1) polyamide in accordance with EN 10310; 2) polyurethane in accordance with EN 15655; 3) enamel1). These external and internal coatings and their application process shall comply with the corresponding EN standards or, where no EN standard exists, they shall comply with ISO standards or with national standards valid in the place of use of the product, or with an agreed technical specification. All coatings shall be works-applied.
1) Enamel is a glass material containing raw material oxides fully or partly molten in the glass. This non-organic preparation can be laid in one or more layers on the metal part at a temperature higher than 480°C. SIST EN 12842:2012
If for a manufacturer a grouping contains only one dn, this dn shall be tested instead of the preferred dn. The PFA for a fitting with a flange on one or more sides cannot under any circumstance be higher than the rating of the flange(s). 5.2 Leak tightness of flexible joints 5.2.1 General The allowable angular deflection per joint declared by the manufacturer shall be not less than those given in Table 4. Table 4 — Allowable angular deflection
Push in joints and mechanical restrained joints Mechanical non-restrained joints dn 63 to 315 1,5°3,5° dn 355 to 630 1,0° 2,5° dn 710 0,5° 1,5°
All non-restrained joints shall be designed to provide axial movement; thereby the allowable withdrawal shall be declared by the manufacturer. NOTE This permits the installed pipeline to accommodate ground movements and/or thermal effects without incurring additional stresses. The manufacturer shall declare the lowest and the highest pipe pressure class for which the fitting is intended to be used. 5.2.2 Test conditions All joint designs shall be performance tested with the lowest and the highest PVC-U and PE pipe pressure class as declared by the manufacturer. Where supporting sleeves (inserts) are required for joints for PE pipes, it shall be clearly stated and such supports shall be included in the test assembly. The tests results shall record the PE grade diameter and SDR rating. The following conditions of tolerance and joint movement are applicable: a) joint of maximum annulus (see 5.2.3.1), aligned, withdrawn to the allowable value declared by the manufacturer, and subjected to shear (see 5.2.3.2); b) joint of maximum annulus (see 5.2.3.1), deflected to the allowable value declared by the manufacturer (see 5.2.1). The application of a shear load, as stated in 5.2.2 a), is only required for PVC-U pipes. SIST EN 12842:2012
test duration: 2 h no leakage during test period joint of maximum annulus, aligned, withdrawn, and subjected to shear load temperature between 15 °C and 25 °C joint of maximum annulus, aligned and withdrawn temperature between 15 °C and 25 °C joint of maximum annulus, deflected temperature between 15 °C and 25 °C joint of maximum annulus, deflected temperature between 15 °C and 25 °C Negative internal pressure test pressure: - 0,8 bar test duration: 2 h maximum pressure change during test period: 0,08 bar joint of maximum annulus, aligned, withdrawn, and subjected to shear load temperature between 15 °C and 25 °C joint of maximum annulus, aligned and withdrawn temperature between 15 °C and 25 °C joint of maximum annulus, deflected
temperature between 15 °C and 25 °C joint of maximum annulus, deflected temperature between 15 °C and 25 °C Cyclic internal hydraulic pressure test pressure: between 0,5 PFA and PFA test period: 24 000 cycles joint of maximum annulus, aligned, withdrawn and subjected to shear load temperature between 15 °C and 25 °C joint of maximum annulus, aligned and withdrawn temperature between 15 °C and 25 °C
5.2.3 Test parameters 5.2.3.1 Annulus All joints shall be performance tested at the extremes of manufacturing tolerance such that the annular gap between the sealing surfaces of the socket and of the spigot is equal to the maximum design value plus 0 %, SIST EN 12842:2012
When tested by the method described in 7.4, the jointed assembly shall not leak nor shall the pipe fracture when subjected to the test pressures resulting from the stresses given in the following test options:
a) PE 100 pipes: 1) Temperature 80 °C with a circumferential stress of 5,3 N/mm2 for 165 h; 2) Temperature 80 °C with a circumferential stress of 5,0 N/mm2 for 1 000 h; 3) Temperature 60 °C with a circumferential stress of 6,8 N/mm2 for 165 h; 4) Temperature 60 °C with a circumferential stress of 6,5 N/mm2 for 1 000 h; 5) Temperature 50 °C with a circumferential stress of 7,8 N/mm2 for 165 h; 6) Temperature 50 °C with a circumferential stress of 7,4 N/mm2 for 1 000 h. b) PE 80 pipes: 1) Temperature 80 °C with a circumferential stress of 4,3 N/mm2 for 165 h; 2) Temperature 80 °C with a circumferential stress of 4,1 N/mm2 for 1 000 h; 3) Temperature 60 °C with a circumferential stress of 5,5 N/mm2 for 165 h; 4) Temperature 60 °C with a circumferential stress of 5,2 N/mm2 for 1 000 h; SIST EN 12842:2012
is the circumferential stress to be induced by the test pressure (a) to (f) in 5.3.1, in megapascals; dn
is the nominal outside diameter of the test piece, in millimetres; en
is the nominal wall thickness of the free length of the test piece, in millimetres. If after the test period the sample has not failed, the test shall be discontinued and the sample subjected to the test as detailed in 5.3.2. 5.3.2 Pull out test at 25 ºC After having been subjected to the requirements of 5.3.1, the assembly shall be tested by the method described in 7.5.
The pipe shall not fracture within the jointed assembly. Whilst initial movement of the pipe within the joint is allowed, no further such movement is permitted after the test loads calculated from Formula (2) has been attained: 421042,1−×=DpFπ (2) where F
is the longitudinal test force to be applied, in kilonewtons; 1,2
is the safety factor; p
is the maximum working pressure (PFA) of the pipe, in bars; D
is the external diameter, in millimetres.
5.3.3 PVC-U pipes This test is applicable to both non-restrained and restrained joints for PVC-U pipe. When tested by the method described in 7.6, the jointed assembly shall not leak at any point of the jointing areas during the test period when subjected to the test pressure from one of the following test options: a) Pipe with a design stress of 10 MPa: 1) Temperature 20ºC for 1000 hours; test pressure = 1,7p 2) Temperature 40ºC for 1000 hours; test pressure = 1,3p SIST EN 12842:2012
Table 6 — Dimensions of test bar Type of casting Nominal diameter of the test bar Limit deviations on diameter Tolerance on shapea
mm mm mm
a) Integrally cast samples b) Separately cast samples: 1) sample thickness 12,5 mm for casting thickness less than 12 mm 2) sample thickness 25 mm for casting thickness 12 mm and over
5,0
6,0
12,0 or 14,0
± 0,06
± 0,06
± 0,09
0,03
0,03
0,04 a Maximum difference between the smallest and the largest measured diameter of the test bar. The tensile strength shall be calculated either: from the nominal diameter of the test bar when it has been machined to fulfil all the tolerances given in Table 6, or if it is not the case,
from the actual diameter of the test bar measured before the test. The actual diameter shall be measured using a measuring device having an error limit ≤ 0,5 % and shall be within ± 10 % of the nominal diameter. 6.1.3 Apparatus and test method The tensile test shall be carried out in accordance with EN 10002-1. 6.1.4 Test results Test results shall comply with 4.3.1.1. If they do not comply, the manufacturer shall: a) in the case where the metal does not achieve the required mechanical properties, investigate the reason and ensure that all castings in the batch are either re-heat treated or rejected. Castings which have been re-heat treated are then re-tested in accordance with 6.1; b) in the case of a defect in the test bar, carry out a further test. If it passes, the batch is accepted; if not, the manufacturer may proceed as in a) above. The manufacturer may limit the amount of rejection by making tests until the rejected batch of castings is bracketed, in order of manufacture, by a successful test at each end of the interval in question. 6.2 Brinell hardness for ductile iron When Brinell hardness tests are carried out (see 4.3.1.2), they shall be performed either on the casting in dispute or on a sample cut from the casting. The surface to be tested shall be suitably prepared by local grinding to ensure a flat surface and the test shall be carried out in accordance with EN ISO 6506-1 using a ball of 2,5 mm or 5 mm or 10 mm diameter. SIST EN 12842:2012
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