SIST EN 3717:2008

Aerospace series - Tubes - Selection for engines fluid systems

The present standard gives a selection of external diameters and thicknesses of tubes according to ISO 2964.
These tubes shall be used for conveying fluids such as kerosene, oil, air, etc. for engine application.

Luft- und Raumfahrt - Rohre für Fluid-Systeme an Triebwerken - Auswahl

Die vorliegende Norm gibt eine Auswahl an Außendurchmessern und Wanddicken von Rohren nach ISO 2964.
Diese Rohre sind zur Förderung von Flüssigkeiten wie Kerosin, Öl, Luft usw. bei Triebwerken anzuwenden.

Série aérospatiale - Tubes - Sélection pour circuits de fluide pour application moteurs

Aeronavtika - Cevi - Izbira cevi za fluidne sisteme pri motorjih

General Information

• Status: Published
• Publication Date: 22-May-2008
• ICS: 49.080 - Aerospace fluid systems and components
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 09-May-2008
• Due Date: 14-Jul-2008
• Completion Date: 23-May-2008
• Ref Project: EN 3717:2008 - Aerospace series - Tubes - Selection for engines fluid systems

Overview

EN 3717:2008 - Aerospace series: Tubes - Selection for engines fluid systems is a CEN (European) standard that defines a selection of external diameters and wall thicknesses for tubing used in aircraft engine fluid systems. The standard bases its dimensional choices on ISO 2964 and is intended for tubing that conveys fluids such as kerosene, oil and air in engine applications. Dimensions are given in millimetres and Table 1 of EN 3717:2008 lists permitted diameter‑thickness combinations and informative mass-per-metre values for common materials.

Key topics

• Scope and purpose: standardizes outside diameters and thicknesses for aircraft engine tubing to ensure consistent selection and interchangeability.
• Normative reference: ISO 2964 (Aerospace - Tubing - Outside diameters and thicknesses - Metric dimensions).
• Dimensioning: diameter‑thickness combinations are provided in a tabulated form (millimetre units).
• Materials and mass data: the standard gives informative masses calculated for stainless steel (density 7.85 kg/dm3) and titanium alloys (density 4.5 kg/dm3), supporting lightweight design trade-offs.
• Application focus: tubes intended specifically for engine fluid systems (fuel, oil, pneumatic lines).

Applications

EN 3717:2008 is practical for:

• Specifying tubing for engine fuel and lubrication systems where standardized diameters and wall thicknesses are required.
• Selecting tubing material and wall thickness to meet strength, weight and routing constraints in engine installations.
• Procurement and part standardization for aircraft manufacturers, suppliers and maintenance organizations to ensure compatibility across systems and suppliers.
• Weight estimation and preliminary mass budgeting using the informative mass-per-metre data for stainless steel and titanium alloy tubes.

Who uses this standard

• Aerospace OEMs and engine manufacturers specifying fluid system tubing.
• Design and stress engineers selecting tube sizes for hydraulic, pneumatic and fuel lines.
• Tube and fittings suppliers producing compliant tubing to ISO 2964/EN 3717 dimensions.
• MRO providers and certification bodies referencing standard dimensional suites during maintenance and conformity checks.

Related standards

• ISO 2964 (normative reference): metric outside diameters and thicknesses for aerospace tubing.
• Additional aerospace tubing and fluid-system standards may be used in conjunction with EN 3717:2008 for material, joining and testing requirements.

Keywords: EN 3717:2008, aerospace tubes, engine fluid systems, tubing selection, ISO 2964, external diameters, wall thickness, stainless steel tubing, titanium tubing, aircraft fuel lines.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Tubes - Selection for engines fluid systemsAeronavtika - Cevi - Izbira cevi za fluidne sisteme pri motorjihSérie aérospatiale - Tubes - Sélection pour circuits de fluide pour application moteursLuft- und Raumfahrt - Rohre für Fluid-Systeme an Triebwerken - Auswahl49.080Aerospace fluid systems and componentsICS:SIST EN 3717:2008enTa slovenski standard je istoveten z:EN 3717:200801-julij-2008SIST EN 3717:2008SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 3717April 2008ICS 49.080 English VersionAerospace series - Tubes - Selection for engines fluid systemsSérie aérospatiale - Tubes - Sélection pour circuits defluide pour application moteursLuft- und Raumfahrt - Rohre für Fluid-Systeme anTriebwerken - AuswahlThis European Standard was approved by CEN on 21 December 2007.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 CEN 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 CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3717:2008: E
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