SIST EN 10310:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Steel tubes and fittings for onshore and offshore pipelines - Internal and external polyamide powder based coatingsStahlrohre und -formstücke für erd- und wasserverlegte Rohrleitungen - Auskleidungen und Beschichtungen aus Polyamid-PulverTubes et raccords en acier pour canalisations enterrées et immergées - Revetements internes et externes a base de poudre polyamideSteel tubes and fittings for onshore and offshore pipelines - Internal and external polyamide powder based coatings77.140.75Jeklene cevi in cevni profili za posebne nameneSteel pipes and tubes for specific use25.220.60Organske prevlekeOrganic coatingsICS:Ta slovenski standard je istoveten z:EN 10310:2003SIST EN 10310:2004en01-junij-2004SIST EN 10310:2004SLOVENSKI
STANDARD



SIST EN 10310:2004



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10310December 2003ICS 23.040.99; 25.220.60English versionSteel tubes and fittings for onshore and offshore pipelines -Internal and external polyamide powder based coatingsTubes en acier et raccords pour canalisations enterrées etimmergées - Revêtements internes et externes à base depoudre polyamideStahlrohre und -formstücke für erd- und wasserverlegteRohrleitungen - Auskleidungen und Beschichtungen ausPolyamid-PulverThis European Standard was approved by CEN on 20 February 2003.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10310:2003 ESIST EN 10310:2004



EN 10310:2003 (E)2Contents1Scope.52Normative references.53Terms and definitions.64Symbols.65Information to be supplied by the purchaser.65.1Mandatory.65.2Options indicated by the purchaser.76Description of the coating.77Application of the coating.77.1Surface preparation.77.2Primer application.87.3Polyamide application.87.4Coating fusion.88Requirements of the applied coating.108.1General.108.2Appearance and continuity.108.3Thickness of the coating system.108.4Cut back at the tube ends.118.5Holiday detection.118.6Impact resistance.118.7Adhesion.118.8Indentation resistance.118.9Electrical insulation resistance.128.10Elongation at break.128.11Resistance to ultraviolet radiation.128.12Cathodic disbondment.128.13Salt spray resistance.138.14Demineralized water immersion.138.15Flexibility.138.16Waste water resistance.139Repairs.1310Handling, transportation and storage.1410.1Handling.1410.2Transportation to storage areas.1410.3Storage.1410.4Loading of tubes and components for delivery.14Annex A (normative)
Holiday detection test.15A.1General.15A.2Apparatus.15A.3Procedure.15A.4Results.15Annex B (normative)
Adhesion test.16B.1General.16B.2Apparatus.16B.3Procedure.16B.4Results.16Annex C (normative)
Specific electrical insulation resistance test.18C.1General.18C.2Apparatus.18SIST EN 10310:2004



EN 10310:2003 (E)3C.3Procedure.18C.4Results.18Annex D (normative)
Resistance to ultraviolet radiation.21D.1General.21D.2Apparatus.21D.3Procedure.21D.4Results.21Annex E (normative)
Cathodic disbondment test.23E.1General.23E.2Apparatus.23E.3Sampling.24E.4Procedure.24E.5Results.25Annex F (normative)
Demineralized water immersion test.29F.1General.29F.2Apparatus.29F.3Procedure.29F.4Results.29Annex G (normative)
Flexibility test.30G.1General.30G.2Apparatus.30G.3Procedure.31Annex H (normative)
Waste water resistance test.32H.1General.32H.2Apparatus.32H.3Procedure.32H.4Results.33Annex I (normative)
Viscosity analysis test.34I.1General.34I.2Equipment.34I.3Procedure.34I.4Results.35SIST EN 10310:2004



EN 10310:2003 (E)4ForewordThis document (EN 10310:2003) has been prepared by Technical Committee ECISS/TC 29 “Steel tubes andfittings for steel tubes”, the secretariat of which is held by UNI.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by June 2004, and conflicting national standards shall be withdrawn at the latest byJune 2004.The annexes A, B, C, D, E, F, G, H and I are normative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 10310:2004



EN 10310:2003 (E)51 ScopeThis European Standard defines the internal and/or external polyamide powder coatings applied by dipping in afluidised bed or by spraying, or by roto-coating. These coatings are intended for the protection the inner and outersurfaces of steel tubes and their fittings (components) used as component parts of pipelines. This standard mayalso be applied for accessories, such as valves, pumps, screens, etc.This type of coating is used for the protection of buried, submerged or above ground pipelines conveying fluids atworking temperatures between 0 °C and + 60 °C. Other working service temperatures can be used after agreementbetween the purchaser and the coater.The coatings covered by this standard are applicable to longitudinally or spirally welded steel tubes and toseamless steel tubes and their fittings components used for the construction of pipelines conveying liquids.The internal coating of tubes to be used for the transportation of water intended for human consumption should notaffect the quality of that water to such an extent that it fails to comply with the requirements of the EU and EFTAregulations.For this purpose, reference should be made to the relevant national regulations and standards, transposing ENstandards when available, dealing with the influence of materials on water quality and to the requirements forcoatings.NOTEA European Acceptance Scheme (EAS) is in course of development in relation to the CPD and the DWD. Itsrequirements will be introduced in this standard when completed.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN ISO 60, Plastics – Determination of apparent density of material that can be poured from a specified funnel(ISO 60:1977).EN ISO 62, Plastics – Determination of water absorption (ISO 62:1999).EN ISO 527-3, Plastics – Determination of tensile properties – Part 3 : Test conditions for films and sheets(ISO 527-3:1995).EN ISO 868, Plastics and ebonite – Determination of indentation hardness by means of a durometer (shorehardness) (ISO 868:1995).prEN ISO 1183-11), Plastics – Methods for determining the density of non-cellular plastics - Part 1 : Immersionmethod, liquid pyknometer method and titration method (ISO/DIS 1183-1:2002).prEN ISO 1183-21), Plastics – Methods for determining the density of non-cellular plastics - Part 2 : Densitygradient column method (ISO/DIS 1183-2:2002).EN ISO 1183-3, Plastics – Methods for determining the density of non-cellular plastics - Part 3 : Gas pyknometermethod (ISO 1183-3:1999).EN ISO 2808, Paints and varnishes – Determination of film thickness (ISO 2808:1997).
1)To be published.SIST EN 10310:2004



EN 10310:2003 (E)6EN ISO 3146, Plastics - Determination of melting behaviour (melting temperature or melting range) of semi-crystalline polymers by capillary tube and polarizing-microscope methods (ISO 3146:2000).EN ISO 4287, Geometrical product specification (GPS) – Surface texture : Profile method – Terms, definitions andsurface texture parameters (ISO 4287:1997).EN ISO 4892-2, Plastics – Methods of exposure to laboratory light sources – Part 2 : Xenon-arc sources(ISO 4892-2:1994).EN ISO 6272, Paints and varnishes – Falling-weight test (ISO 6272:1993).EN ISO 7253, Paints and varnishes – Determination of resistance to neutral salt spray (fog) (ISO 7253:1996).EN ISO 8501-1, Preparation of steel substrates before application of paints and related products – Visualassessment of surface cleanliness – Part 1 : Rust grades and preparation grades of uncoated steel substrates andof steel substrates after overall removal of previous coatings (ISO 8501-1:1988).ISO 3105, Glass capillary kinematic viscometers – Specifications and operating instructions.ISO 6441, Paints and varnishes – Indentation test (spherical or pyramidal).3 Terms and definitionsFor the purposes of this European Standard, the following terms and definitions apply.3.1coating manufacturersupplier of the coating material in a condition suitable for application to the product to be coated3.2coatercompany responsible for applying the coating material to the components to be coated3.3purchasercompany that buys the coated products4 SymbolsRzroughness parameter (the average surface roughness from five successive evaluation areas measuredaccording to EN ISO 4287);Rsspecific electrical insulation resistance, expressed in ohms square metres (W.m2);kcorrection factor;RTroom temperature.5 Information to be supplied by the purchaserThe following information shall be supplied to the coater by the purchaser.5.1 MandatoryIn his enquiry and order the purchaser shall state the following minimum information:SIST EN 10310:2004



EN 10310:2003 (E)7¾ Identification of the tubes and components to be coated according to this European Standard. The designationshall include a reference to this standard and if applicable, a reference to the standard for the tube the coatinghas been applied to.;Example :5000 m of tube - EN 10224 of 406, 4-4, 0External and/or internal coating - EN 10310;¾ the nature of the fluid being conveyed.5.2 Options indicated by the purchaserIf applicable, the following options may be specified by the purchaser:¾ cut back length;¾ chemical treatment;¾ type and location of the marking;¾ maximum area and number of repairs;¾ maximum thickness of the coating.6 Description of the coatingThe coating system shall consist of a primer film overcoated with a layer of a fully fused polyamide powder coating.7 Application of the coatingThe polyamide coating shall be applied by dipping in a fluidised bed, spraying or roto-coating according toestablished procedures and the recommendations of the coating manufacturer.The data sheets of the coating manufacturer shall contain the items required in Table 1.7.1 Surface preparation7.1.1All tubes and components shall be abrasive blast cleaned. The degree of cleanliness shall be at leastSa 21/2 as defined in EN ISO 8501-1.7.1.2Prior to abrasive blast cleaning, the steel surface shall be dry and free from contamination (oil, grease,temporary corrosion protection, etc.) and surface defects (slivers, laminations, etc.) detrimental to the surface or tothe adhesion of the coating.The blast-cleaned surface shall have a roughness Rz between 40 µm and 90 µm, when measured according toEN ISO 4287.7.1.3After abrasive blast cleaning, the surface of the tube or component shall be inspected and any slivers,laminations, weld spots and other surface imperfections that may have become visible shall be removed usingsuitable method.After removal of these defects, the residual thickness of tubes and components shall satisfy the minimum tolerancerequirements specified by the relevant standard. All treated areas greater than 10 cm2 shall be prepared to providea profile to satisfy the provisions of 7.1.2.7.1.4Prior to the application of the coating, the temperature of the tubes and components shall be maintained atleast 3°C above the dew point.7.1.5Surface contaminants (e.g. residual abrasive dust) shall be removed prior to coating.SIST EN 10310:2004



EN 10310:2003 (E)87.1.6By agreement between the interested parties, chemical pre-treatment of the steel may be used in additionto abrasive blast cleaning7.2 Primer applicationImmediately after surface preparation, the primer coat shall be applied to give a dry film thickness that complieswith the product technical data sheet (see Table 1).7.3 Polyamide applicationThe coating system shall be completed by the application of polyamide powder coat.7.4 Coating fusionThe polyamide coating may be applied to either on a hot or a cold substrate depending on the final thickness to beobtained.7.4.1 Pre-heatingAt the time of coating application, the temperature range on the steel surface shall comply with the coatingmanufacturer’s recommendations.The temperature of the steel component shall be monitored using a suitable means in order to ensure that theapplication conditions are being met.The time the tube or component is held at temperature shall not result in oxidation of it’s the steel surface, thermaldamage of the primer coat or be detrimental to the quality and adhesion of the coating system.7.4.2 Post-heatingAfter application of the polyamide layer to the substrate, post heating may be conducted. The fusion temperatureand the temperature holding time shall be according to the coating manufacturer’s recommendations and shall notbe detrimental to the good quality and adhesion of the coating.SIST EN 10310:2004



EN 10310:2003 (E)9Table 1 — Content of data sheetsLayer 1 primerItemsStandard testreferenceLiquidPowderLayer 2polyamideDate of issue+++Name of manufacturer+++Name and type of product+++Shelf life according to recommended storage condition+++Pot-life at ambient temperature and mixing temperature+Physical state of the delivered product+++Type and size of container+++Storage conditions+++Colour++Method of application+++Bulk densityEN ISO 60+DensityprEN ISO1183-1, prENISO 1183-2and EN ISO1183-3+Solid by volume+Solid by weight+Particle size distribution+ViscosityISO 3105++Theoretical coverage per m² per mm thickness++Processing temperature+++Service temperature range of coating+Product preparation+++Dry thickness rangeEN ISO 2808++Melting temperatureEN ISO 3146+Flash point+Water absorptionEN ISO 62+Shore D hardnessEN ISO 868+Elongation at breakEN ISO 527-3+Impact resistanceEN ISO 6272+Adhesion test+Electrical insulation resistance+Safety data sheet reference++++requires the specified information to be providedSIST EN 10310:2004



EN 10310:2003 (E)108 Requirements of the applied coatingBy agreement, at the time of enquiry and order, between the purchaser, the coater and the coating manufacturerthe applied coating shall be checked against the following requirements.8.1 GeneralThe required properties of the applied coatings are given in Table 2. The electrical insulation resistance test andcathodic disbondment test apply to external coatings only; the other tests apply equally to internal and externalcoatings.Table 2 — Properties of the applied coatingsPropertyCoaterCoating manufacturer0°CRT+ 60°C0°CRT+ 60°CAppearance and continuity oflayer 2+Thickness of the coating system+Cut back length+Holiday detection+Impact resistance++Adhesion+++Indentation resistance++Electrical insulation resistance+Elongation at break+Resistance to ultraviolet radiation+Cathodic disbondment++Salt spray resistance+Demineralized water immersion++Flexibility ++Waste water resistance++requires the specified information to be providedIf other properties or working service temperatures (see clause 1) are required, alternative testing shall be agreedbetween the coater, the coating manufacturer and the purchaser.The above properties are determined for the general usage of the coating in potable and waste water application.For other applications, the chemical resistance to the fluid to be conveyed shall be checked with the coatingmanufacturer.8.2 Appearance and continuityThe appearance and continuity of the coating system shall be inspected visually over the whole surface of all thecomponents.The coating shall be of uniform colour, have a smooth appearance and be free of laminations.8.3 Thickness of the coating systemThe coating thickness shall be measured according to EN ISO 2808 – Method 6A.SIST EN 10310:2004



EN 10310:2003 (E)11Unless otherwise agreed by the purchaser, the absolute minimum thickness of the coating system at any pointshall be 200 µm. On sharp edges where the radius of curvature is less than 3 mm, the minimum thickness shall notbe less than 150 µm.For components where sharp edges are an essential or unavoidable element of their design, a deviation from theminimum coating thickness is permissible subject to agreement by the purchaser.A maximum coating thickness may be specified by the purchaser where appropriate to ensure mating tolerances(see 5.2).8.4 Cut back at the tube endsThe length of the coating cut back, if required, shall be specified by the purchaser (see 5.2).If coating has to be removed, the product surface shall not be damaged.8.5 Holiday detectionHoliday detection shall be carried out according to the method defined in annex A.For components with essential or unavoidable sharp edges (see 8.3), holiday detection is not required at the sharpedges.Any holiday detected shall be repaired according to clause 9.The final coating shall be free from holidays.8.6 Impact resistanceThe minimum impact energy, in joules, shall be determined according to EN ISO 6272 and shall correspond to 2,5J x k (k being the correction factor at any specified temperature (see Table 2). The values of k to be used are givenin Table 3.Table 3 — Correction factorOutside diameter DmmkD > 219,11,0076,1 < D £ 219,10,85D £ 76,10,70After testing, the coating shall be free from holidays when checked according to annex A.8.7 AdhesionThe adhesion shall be determined according to the requirement of annex B at any specified temperature (seeTable 2).The coating adhesion shall satisfy the requirement of rating 2 or better.8.8 Indentation resistanceThe indentation resistance shall be a
...