SIST EN 3247:2004
(Main)Aerospace series - Pipe coupling 8°30' in titanium alloy - Unions, bulkhead, welded end
Aerospace series - Pipe coupling 8°30' in titanium alloy - Unions, bulkhead, welded end
This standard specifies the characteristics of unions, bulkhead, welded end, for pipe couplings 8°30', in titanium alloy, for aerospace applications.
Nominal pressure: 28 000 kPa
Temperature range: - 55 °C to 135 °C
Luft- und Raumfahrt - Rohrverschraubung 8°30' aus Titanlegierung - Gerade Schottverschraubungen mit Anschweißende
Diese Norm legt die Eigenschaften von geraden Schottverschraubungen, mit Anschweißende, für Rohrverschrau-bungen 8°30' aus Titanlegierung, zur Verwendung in der Luft- und Raumfahrt fest.
Nenndruck: bis 28 000 kPa
Temperaturbereich: - 55 °C bis 135° C
Série aérospatiale - Systeme de raccordement 8°30' en alliage de titane - Raccords droits pour traversée de cloison, a souder
La présente norme spécifie les caractéristiques des raccords droits, pour traversée de cloison, à souder, pour les systèmes de raccordement 8°30', en alliage de titane, pour applications aérospatiales.
Pression nominale: jusqu'à 28 000 kPa
Plage de température: - 55 °C à 135 °C
Aerospace series - Pipe coupling 8°30' in titanium alloy - Unions, bulkhead, welded end
General Information
Overview
SIST EN 3247:2004 is a European standard developed by the European Committee for Standardization (CEN) under the aerospace series. It specifies the technical characteristics for pipe couplings featuring an 8°30' angle, made from titanium alloy, with specific configurations including unions, bulkhead fittings, and welded ends. Designed explicitly for aerospace fluid systems, this standard ensures high reliability and performance under demanding conditions.
Key operating parameters include a nominal pressure rating of 28,000 kPa and an operating temperature range from -55 °C to 135 °C, making these components suitable for a wide spectrum of aerospace applications where durability and safety are critical.
Key Topics
Scope and Application
Defines unions, bulkhead, and welded ends for titanium alloy pipe couplings with an 8°30' angle, focusing on aerospace system integration.Material Specifications
Adoption of titanium alloy compliant with standards such as EN 3311 and EN 3314, ensuring strength, corrosion resistance, and weight efficiency vital to aerospace engineering.Dimensions and Configuration
Detailed geometric requirements are provided, including nominal diameters, thread configurations as per ISO 5855-3, surface roughness, and mass limits, ensuring interchangeability and compatibility in aerospace assemblies.Pressure and Temperature Ratings
Components are tested and rated to endure pressures up to 28,000 kPa and temperatures ranging from -55 °C to 135 °C, addressing challenging environmental conditions of aerospace operations.Surface Treatment and Lubrication
Welded ends are specified without surface treatment except for abrasive blasting of critical surfaces and lubrication with molybdenum disulfide dry lubricants in accordance with EN 2491, enhancing sealing effectiveness and thread durability.Marking and Traceability
Marking protocols follow EN 2424 standards, facilitating product identification and ensuring traceability throughout the supply chain and service life.Installation Guidelines
Provides detailed installation dimensions and recommendations to ensure proper assembly and leak-proof performance in line with EN 3275 specifications.
Applications
SIST EN 3247:2004 is primarily targeted for aerospace fluid systems that require high-performance pipe coupling solutions. Its applications include:
Aircraft hydraulic and fuel systems where lightweight titanium components reduce overall aircraft weight while maintaining structural integrity under high pressure and temperature variations.
Spacecraft and satellite fluid transfer systems, benefiting from the corrosion resistance and strength-to-weight ratio of titanium alloy pipe couplings.
Military aviation platforms requiring robust and reliable fluid connectivity under extreme environmental conditions.
High-performance commercial aerospace vehicles, where adherence to recognized standards ensures safety and regulatory compliance.
Related Standards
SIST EN 3247:2004 complements and references a series of other aerospace component standards to ensure harmonized design and testing practices:
- ISO 5855-3 - Limits and dimensions for MJ thread fittings in aerospace fluid systems.
- EN 2424 - Marking standards for aerospace products to guarantee identification and traceability.
- EN 2491 - Specifications for molybdenum disulfide dry lubricants used in aerospace.
- EN 2656 - Geometric configuration for welded coupling ends in pipe systems.
- EN 3267 - Bulkhead washers in titanium alloy compatible with couplings.
- EN 3274 & EN 3275 - Thread and sealing configurations, and dynamic beam seal specifications for couplings.
- EN 3311 & EN 3314 - Material characteristics and treatments for titanium alloy bars used in machining aerospace components.
SIST EN 3247:2004 sets a comprehensive framework for titanium alloy pipe coupling components, ensuring safety, reliability, and performance in the aerospace industry. By standardizing these critical components, aerospace manufacturers and suppliers can achieve consistent quality, regulatory compliance, and operational excellence across complex fluid systems.
Keywords: aerospace pipe coupling, titanium alloy couplings, 8°30' pipe coupling, aerospace unions, bulkhead fittings, welded pipe ends, high pressure aerospace components, EN 3247, aerospace fluid systems standards, titanium pipe fittings, aerospace temperature range, aerospace pressure rating.
Frequently Asked Questions
SIST EN 3247:2004 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Pipe coupling 8°30' in titanium alloy - Unions, bulkhead, welded end". This standard covers: This standard specifies the characteristics of unions, bulkhead, welded end, for pipe couplings 8°30', in titanium alloy, for aerospace applications. Nominal pressure: 28 000 kPa Temperature range: - 55 °C to 135 °C
This standard specifies the characteristics of unions, bulkhead, welded end, for pipe couplings 8°30', in titanium alloy, for aerospace applications. Nominal pressure: 28 000 kPa Temperature range: - 55 °C to 135 °C
SIST EN 3247:2004 is classified under the following ICS (International Classification for Standards) categories: 49.080 - Aerospace fluid systems and components. The ICS classification helps identify the subject area and facilitates finding related standards.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Pipe coupling 8°30' in titanium alloy - Unions, bulkhead, welded endLuft- und Raumfahrt - Rohrverschraubung 8°30' aus Titanlegierung - Gerade Schottverschraubungen mit AnschweißendeSérie aérospatiale - Systeme de raccordement 8°30' en alliage de titane - Raccords droits pour traversée de cloison, a souderAerospace series - Pipe coupling 8°30' in titanium alloy - Unions, bulkhead, welded end49.080Aerospace fluid systems and componentsICS:Ta slovenski standard je istoveten z:EN 3247:2001SIST EN 3247:2004en01-maj-2004SIST EN 3247:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 3247October 2001ICS 49.080English versionAerospace series - Pipe coupling 8°30' in titanium alloy -Unions, bulkhead welded endSérie aérospatiale - Système de raccordement 8°30' enalliage de titane - Raccords droits à souder pour traverséede cloisonLuft- und Raumfahrt - Rohrverschraubung 8°30' ausTitanlegierung - Gerade Schottverschraubungen mitAnschweißendeThis European Standard was approved by CEN on 6 January 2001.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,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3247:2001 ESIST EN 3247:2004
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