EN 15189:2006

Ductile iron pipes, fittings and accessories - External polyurethane coating for pipes - Requirements and test methods

This European standard defines the requirements and test methods applicable to factory applied external polyurethane based coatings for heavy duty (Annex D.3 of EN 545:2002) corrosion protection of buried ductile iron pipes conforming to EN 545, EN 598 and EN 969 for use at operating temperatures up to 50 °C.
This standard does not cover ductile iron pipes protected with zinc with a finishing layer of polyurethane.
This standard does not cover special activities on site such as tapping, clamping, etc., which could affect the corrosion protection properties of the polyurethane coating. These operations should be covered in the laying instructions supplied by manufacturers of clamps, house connection saddles, etc. and any relevant user procedures.

Rohre, Formstücke und Zubehör aus duktilem Gusseisen - Polyurethanumhüllung von Rohren - Anforderungen und Prüfverfahren

Diese Europäische Norm legt die Anforderungen und Prüfverfahren für werksseitig aufgebrachte Umhüllungen
auf Polyurethanbasis für den Korrosionsschutz bei starker Beanspruchung (Anhang D.3 in EN 545:2002) von
erdverlegten Rohren aus duktilem Gusseisen nach EN 545, EN 598 und EN 969 für den Einsatz bei Betriebs-temperaturen
bis 50 °C fest.
Diese Norm gilt nicht für Rohre aus duktilem Gusseisen, die mit Zink und einer Deckbeschichtung aus Poly-urethan
geschützt sind.
Bestimmte Arbeiten vor Ort, z. B. Anbohren, Herstellen von Klemmverbindungen usw., können die Korro-sionsschutzeigenschaften
der Polyurethanumhüllung beeinträchtigen. Diese Arbeitsvorgänge sollten in den
vom Hersteller der Klemmverbinder, Anbohrsättel, usw. mitgelieferten Einbauanleitungen sowie für alle dies-bezüglichen
Arbeiten des Betreibers festgelegt sein.

Tuyaux, raccords et accessoires en fonte ductile - Revêtement extérieur polyuréthanne des tuyaux - Exigences et méthodes d'essai

La présente Norme européenne définit les exigences et méthodes d'essai applicables aux revêtements extérieurs à base de polyuréthanne appliqués en usine, destinés à assurer une protection renforcée contre la corrosion (Annexe D.3 de l'EN 545:2002) des tuyaux en fonte ductile enterrés conformes à l'EN 545, l'EN 598 et l'EN 969, prévus pour des températures de service inférieures ou égales à 50 °C.
La présente norme ne traite pas des tuyaux en fonte ductile protégés par du zinc et par une couche de finition polyuréthanne. Des activités particulières sur site (martèlement léger, fixations par serrage, etc.) sont susceptibles d'influer sur les propriétés de protection contre la corrosion du revêtement polyuréthanne. Il convient que ces opérations soient mentionnées dans les instructions de pose fournies par les fabricants de fixations par serrage, de sellettes de raccordement, etc., ainsi que dans le mode opératoire approprié de l'utilisateur. Ces instructions ne font pas partie de la présente norme.

Litoželezne cevi, fitingi in pribor - Zunanja poliuretanska prevleka cevi - Zahteve in metode preskušanja

General Information

• Status: Published
• Publication Date: 07-Nov-2006
• Withdrawal Date: 30-May-2007
• ICS: 23.040.01 - Pipeline components and pipelines in general
• ICS: 25.220.60 - Organic coatings
• Technical Committee: CEN/TC 203 - Cast iron pipes, fittings and their joints
• Drafting Committee: CEN/TC 203/WG 8 - Coatings for pipes, fittings and accessories
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 15-Mar-2018
• Completion Date: 14-Apr-2025
• Ref Project: SIST EN 15189:2007 - Ductile iron pipes, fittings and accessories - External polyurethane coating for pipes - Requirements and test methods

Overview

EN 15189:2006 - Ductile iron pipes, fittings and accessories: External polyurethane coating for pipes - specifies requirements and test methods for factory-applied polyurethane external coatings for heavy-duty buried ductile iron pipes (operating temperatures up to 50 °C). The standard covers surface preparation, coating quality, minimum thickness and performance testing to ensure durable corrosion protection of ductile iron pipes used in water, sewerage and gas networks. It excludes pipes protected by zinc with a polyurethane finish and does not cover on-site operations (tapping, clamping) that may affect coating integrity.

Key topics and technical requirements

• Scope & applicability: Heavy-duty external polyurethane coatings for buried ductile iron pipes conforming to EN 545, EN 598 and EN 969; max operating temperature 50 °C.
• Surface preparation: Grit blasting to achieve cleanliness Sa 2.5 (EN ISO 8501‑1) and minimum surface profile (Ra ≥ 10 µm / anchored profile Rz ≈ 50 µm).
• Coating thickness: Minimum practical thickness requirement - statistical criterion (Xmean − 2σ) ≥ 700 µm.
• Non-porosity (holidays): Electrical holiday testing with specified voltages - 4.2 kV (wire mesh electrodes) or 6 kV (conductive rubber); higher voltages by agreement for thicker coatings.
• Mechanical & physical properties:
  • Hardness ≥ 70 Shore D (EN ISO 868)
  • Adhesion ≥ 8 MPa (EN ISO 4624 punch separation method)
  • Impact resistance: minimum impact energy E ≥ 8 J/mm
  • Indentation: max static indentation 10% at 10 MPa
  • Elongation at break: ≥ 2.5%
• Chemical resistance & electrical resistance:
  • Immersion tests (e.g., 100 days at 50 °C in deionised water and 10% H2SO4) with prescribed mass change limits
  • Specific coating resistance after 100 days in 0.1 M NaCl ≥ 10^8 Ω·m^2
• Quality control: Routine production tests (appearance, thickness measurement, non‑porosity, hardness, adhesion) and defined performance tests after process changes.
• Pipe ends: Spigot, socket and gasket zones may require epoxy, polyurethane (min 100 µm in some zones) or bituminous paint; joint assembly diameters must be ensured.

Applications and users

• Primary users: ductile iron pipe manufacturers, coating applicators, testing laboratories, utilities and municipal engineers specifying buried water, sewer and gas pipelines.
• Practical uses: Specification and procurement of coated ductile iron pipes, quality control during production, acceptance testing, and ensuring long-term corrosion protection in buried pipeline projects.
• Benefits: Clear acceptance criteria for coating thickness, adhesion, porosity and chemical resistance that reduce pipeline failure risk and maintenance costs.

Related standards

• EN 545, EN 598, EN 969 (ductile iron pipes for water, sewerage, gas)
• EN 14901 (epoxy heavy-duty coatings for fittings)
• Test-method references: EN ISO 62, EN ISO 868, EN ISO 4624, EN ISO 8501‑1, EN ISO 8503‑1

Keywords: EN 15189:2006, polyurethane coating, ductile iron pipes, corrosion protection, coating thickness, non-porosity test, adhesion, impact resistance, pipeline specifications.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Litoželezne cevi, fitingi in pribor - Zunanja poliuretanska prevleka cevi - Zahteve in metode preskušanjaRohre, Formstücke und Zubehör aus duktilem Gusseisen - Polyurethanumhüllung von Rohren - Anforderungen und PrüfverfahrenTuyaux, raccords et accessoires en fonte ductile - Revetement extérieur polyuréthanne des tuyaux - Exigences et méthodes d'essaiDuctile iron pipes, fittings and accessories - External polyurethane coating for pipes - Requirements and test methods77.140.75Jeklene cevi in cevni profili za posebne nameneSteel pipes and tubes for specific useICS:Ta slovenski standard je istoveten z:EN 15189:2006SIST EN 15189:2007en01-april-2007SIST EN 15189:2007SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15189November 2006ICS 23.040.01; 25.220.60 English VersionDuctile iron pipes, fittings and accessories - Externalpolyurethane coating for pipes - Requirements and test methodsTuyaux, raccords et accessoires en fonte ductile -Revêtement extérieur polyuréthanne des tuyaux -Exigences et méthodes d'essaiRohre, Formstücke und Zubehör aus duktilem Gusseisen -Polyurethanumhüllung von Rohren - Anforderungen undPrüfverfahrenThis European Standard was approved by CEN on 11 September 2006.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 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 translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15189:2006: ESIST EN 15189:2007

Quality assurance.14 Annex B (normative)
Coating application process.16 Annex C (informative)
Packaging.18 Bibliography.19
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 (Shore hardness) (ISO 868:2003)
EN ISO 4624, Paints and varnishes; Pull-off test for adhesion (ISO 4624:2002) EN ISO 8501–1, Preparation of steel substrates before application of paints and related products – Visual assessment of surface cleanliness – Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings (ISO 8501-1:1988) EN ISO 8503–1, Preparation of steel substrates before application of paints and related products - Surface roughness characteristics of blast-cleaned steel substrates - Part 1: Specifications and definitions for ISO surface profile comparators for the assessment of abrasive blast-cleaned surfaces (ISO 8503-1:1988) SIST EN 15189:2007

absence of holidays in a high voltage test under defined test conditions 3.6 polyurethane coating factory applied coating which consists of
polyurethane on the outside of the pipe barrel and external socket
Key 1 Gasket seat 2 Socket entrance 3 Socket face 4 External socket 5 Pipe barrel 6 Spigot end Figure 1 — Location of the defined pipe areas Pipe ends such as the spigot end, the socket face, the socket entrance and gasket seat may be coated differently
(see 5.3) 3.7 specific coating resistance surface related electric resistance of the coating perpendicular to the pipe wall SIST EN 15189:2007

test which is done once and is repeated according to a schedule or after a relevant change of coating material
and/or coating supplier or change in process application 3.9 routine test test carried out to control the manufacturing process with a frequency defined by the manufacturer 4 Ordering information The following information shall be obtained by the manufacturer. Ductile iron pipes according to EN 545, EN 598 or EN 969, but externally coated in accordance with this European Standard shall be specified in the purchaser enquiry and order by reference to this standard. EXAMPLE: 5 000 m of ductile iron pipe DN 300 according to EN 545; external polyurethane coating according to EN 15189. The manufacturer shall obtain from the purchaser the type of coating to be used for pipe ends (see 5.3). 5 Technical Requirements 5.1 Surface preparation Prior to application of the polyurethane coating, the surface of the pipes shall be technically clean, free of rust, loose constituent materials, dirt, oil, grease and moisture. In cold weather, or anytime when moisture tends to condense on the surface of the pipe, the pipe shall be uniformly warmed for a sufficient time to dry the pipe prior to cleaning. The pipe temperature shall be maintained at at least 5 °C above the dew point. The surface shall be prepared by grit blasting and be in compliance with level Sa 2.5 of EN ISO 8501-1. The surface roughness Ra, in accordance with EN ISO 8503-1, shall be at least 10 micrometers which is equivalent to an anchored profile, Rz of 50 micrometers or higher if required by the coating material provider or manufacturer. 5.2 Finished polyurethane coating 5.2.1 Appearance and continuity The polyurethane coating shall be:  uniform in colour, except the spigot and the socket which may be of a different colour for permitted marking;  uniform appearance and smoothness except for admissible repairs;  free of visible defects (pinholes, bubbles, blisters, wrinkles, cracks or voids). Slight superficial variations of colour or brilliance, due to repairs or prolonged exposure to sunlight or contact with other pipes are permissible. SIST EN 15189:2007

5.7 Hardness When assessed by testing in accordance to EN ISO 868 the hardness of the polyurethane coating shall be at a minimum 70 Shore D. 5.8 Adhesion Adhesion shall be at least 8 MPa when tested in accordance with 7.1.9. 6 Performance Requirements 6.1 Chemical resistance The chemical resistance is determined by the change in weight of the polyurethane coating. When tested in accordance to 7.2.1, the weight increase and weight loss shall meet the requirements given in Table 1 when compared to the original weight. SIST EN 15189:2007

%
%
Immersion test
EN ISO 62 method 2
7.2.1.1
Less than 15 % weight increase Less than 2 % weight loss Mass change in 10 % sulphuric acid, 100 days at 50 °C subsequent drying 100 days at 23 °C
%
%
Immersion test
EN ISO 62 method 2
7.2.1.2
Less than 10 % weight increase Less than 4 % weight loss 6.2 Impact strength The minimum impact strength shall be determined in accordance with the test method defined in 7.2.2 with an impact energy, E of at least 8 j/mm. The coating shall show no damage when tested in accordance with 7.1.7. 6.3 Indentation resistance The coating shall have a maximum static indentation of 10 % when subjected to a pressure of 10 MPa in accordance with 7.2.3. 6.4 Elongation at break The elongation at break shall be assessed by testing in accordance with the test method defined in 7.2.4. The coating shall have a minimum elongation
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