SIST EN 4029:2002
(Main)Aerospace series - Pipe coupling 8°30' in titanium alloy - Tees bulkhead branch
Aerospace series - Pipe coupling 8°30' in titanium alloy - Tees bulkhead branch
This standard specifies the characteristics of tees, bulkhead branch, for pipe couplings 8 30', in titanium alloy, for
aerospace applications.
Nominal pressure: up to 28 000 kPa
Temperature range: 55 C to 135 C
Luft- und Raumfahrt - Rohrverschraubung 8°30' aus Titanlegierung - T-Verschraubungen seitlicher Auslass als Schottanschluss
Diese Norm legt die Eigenschaften von T-Verschraubungen, seitlicher Auslass als Schottanschluss, für Rohrver-
schraubungen 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 en té pour traversée de cloison en pied
La présente norme spécifie les caractéristiques des raccords en té pour traversée de cloison en pied, 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 - Tees bulkhead branch
General Information
- Status
- Published
- Publication Date
- 31-Dec-2001
- Technical Committee
- SS SPL - Technical Board for the general field
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Jan-2002
- Due Date
- 01-Jan-2002
- Completion Date
- 01-Jan-2002
Relations
- Refers
SIST EN 3274:2011 - Aerospace series - Pipe coupling 8°30' - Thread end - Geometric configuration - Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Refers
SIST EN 3312:2012 - Aerospace series - Titanium alloy Ti-6Al-4V - Annealed - Forgings De ≤ 150 mm - Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
SIST EN 4029:2002 defines the requirements for tees, bulkhead branch, used in pipe couplings with an 8°30' flare angle, manufactured from titanium alloy for aerospace applications. This European standard establishes essential characteristics, dimensional and material requirements, performance under specific pressure and temperature ranges, and marking procedures to ensure product reliability and interoperability in critical aerospace fluid systems.
- Standard Reference: SIST EN 4029:2002
- Title: Aerospace series - Pipe coupling 8°30' in titanium alloy - Tees bulkhead branch
- Issued by: Slovenski inštitut za standardizacijo (SIST)
- Application sectors: Aerospace, aviation, and high-performance fluid delivery systems
- Nominal pressure: Up to 28,000 kPa
- Temperature range: −55°C to +135°C
Key Topics
- Design and Configuration: Specifies characteristics, dimensional limits, configuration, and mass of titanium alloy tees, bulkhead branch, suitable for aerospace pipe couplings.
- Materials: Titanium alloy in accordance with referenced EN standards to ensure high strength, corrosion resistance, and low weight, meeting demanding aerospace requirements.
- Surface Preparation: Outlines pre-lubrication abrasive blasting, specified lubricant coatings, and strict surface roughness and finishing tolerances for critical performance and sealing interface.
- Mechanical Performance: Ensures suitability for operational pressures up to 28,000 kPa and temperatures ranging from −55°C to +135°C, supporting a variety of aerospace fluid applications.
- Quality Requirements: Details marking (EN 2424), finish, dimensional compliance, and exclusion of manual deburring to maintain uniformity and traceability.
Applications
The tees, bulkhead branch pipe couplings specified in SIST EN 4029:2002 are integral components in aerospace fluid delivery systems. Their main practical applications include:
- Aircraft Hydraulic and Fuel Systems: Ensuring secure, leak-free connections in high-stress or high-pressure environments where reliability is critical.
- Spacecraft Fluid Circuits: Providing corrosion-resistant and lightweight solutions for pipe intersections in closed and open bulkhead configurations.
- Aerospace Manufacturing: Utilized by aerospace manufacturers and maintainers to replace or construct certified fluid system connections, ensuring compliance with international safety and performance standards.
- Critical Environments: Suitable for operation in extreme temperature ranges and where exposure to aggressive fluids demands robust performance from titanium alloy fittings.
Related Standards
For the effective implementation and integration of tees, bulkhead branch pipe couplings, the following related standards are referenced and often used in conjunction:
- EN 3275: Aerospace series - Pipe coupling 8°30' up to 28,000 kPa - Dynamic beam seal - Metric series - Technical specification
- ISO 5855-3: Aerospace - MJ threads - Limit dimensions for fittings for fluid systems
- EN 2424: Marking of aerospace products
- EN 2491: Molybdenum disulphide dry lubricant - Coating methods
- EN 3267: Washers, bulkhead, in titanium alloy
- EN 3274: Pipe coupling 8°30' - Thread ends - Geometric configuration
- EN 3311/EN 3312/EN 3314/EN 3315: Specifications for titanium alloy bars and forgings used in aerospace applications
SIST EN 4029:2002 supports safe, high-performance aerospace fluid systems by standardizing high-quality titanium alloy pipe coupling tees for use in demanding environments, enhancing compatibility and reliability throughout the aerospace industry.
Get Certified
Connect with accredited certification bodies for this standard

BUREAU VERITAS Certification Germany
Bureau Veritas certification in Germany.

Element Materials Technology
Materials testing and product certification.

AQMS Ltd.
AQMS provides ISO certification to SMEs across the UK.
Sponsored listings
Frequently Asked Questions
SIST EN 4029:2002 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Pipe coupling 8°30' in titanium alloy - Tees bulkhead branch". This standard covers: This standard specifies the characteristics of tees, bulkhead branch, for pipe couplings 8 30', in titanium alloy, for aerospace applications. Nominal pressure: up to 28 000 kPa Temperature range: 55 C to 135 C
This standard specifies the characteristics of tees, bulkhead branch, for pipe couplings 8 30', in titanium alloy, for aerospace applications. Nominal pressure: up to 28 000 kPa Temperature range: 55 C to 135 C
SIST EN 4029:2002 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.
SIST EN 4029:2002 has the following relationships with other standards: It is inter standard links to SIST EN 3274:2011, SIST EN 3311:2024, oSIST prEN 415-2:2022, SIST EN 2491:2011, SIST EN 3312:2012, SIST EN 2424:2008, SIST EN 3267:2004, SIST EN 3275:2019. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 4029:2002 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
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 - Tees bulkhead branchLuft- und Raumfahrt - Rohrverschraubung 8°30' aus Titanlegierung - T-Verschraubungenseitlicher Auslass als SchottanschlussSérie aérospatiale - Systeme de raccordement 8°30' en alliage de titane - Raccords en té pour traversée de cloison en piedAerospace series - Pipe coupling 8°30' in titanium alloy - Tees bulkhead branch49.080Aerospace fluid systems and componentsICS:Ta slovenski standard je istoveten z:EN 4029:2001SIST EN 4029:2002en01-januar-2002SIST EN 4029:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 4029September 2001ICS 49.080English versionAerospace series - Pipe coupling 8°30' in titanium alloy - Teesbulkhead branchSérie aérospatiale - Système de raccordement 8°30' enalliage de titane - Raccords en té pour traversée de cloisonen piedLuft- und Raumfahrt - Rohrverschraubung 8°30' ausTitanlegierung - T-Verschraubungen seitlicher Auslaß alsSchottanschlußThis European Standard was approved by CEN on 29 December 2000.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 4029:2001 ESIST EN 4029:2002
ScopeThis standard specifies the characteristics of tees, bulkhead branch, for pipe couplings 8°30', in titanium alloy, foraerospace applications.Nominal pressure: up to 28 000 kPaTemperature range:
55 °C t
...



