Overview
EN ISO 10806:2003 - Pipework: Fittings for corrugated metal hoses (ISO 10806:2003) specifies the characteristics, design, materials, assembly and type-test requirements for fittings used with corrugated metal hoses that conform to ISO 10380. Endorsed by CEN, this standard defines how fittings (including threaded, flanged and adaptor types) must be made and tested to ensure safe, pressure-retaining hose assemblies for industrial pipework.
Key topics and technical requirements
- Scope and applicability
- Applies to fittings for corrugated metal hose conforming to ISO 10380; can be used for other fittings if they meet the stated material, design, assembly and test requirements.
- Classification of fittings
- Categories include welded screwed, welded stub, welded flanged, adaptors and specific types listed in Table 1 (e.g., fixed male (M), spherical nipple with swivel nut (FS), conical nipples, loose flanges, fixed flanges).
- Materials
- Materials for welded/brazed end-fitting parts are selected from ISO 10380:2003 Table 1. Other parts must use ISO-standard materials suitable for the application.
- Design and pressure ratings
- Pressures for welded fittings follow ISO 10380; flanged fittings use pressure ratings aligned with ISO 7268 and EN 1333 (PN values). When mixed-pressure components are assembled, the lower allowable pressure governs the assembly.
- Temperature considerations
- For temperatures below –20 °C or above 50 °C, derating factors from ISO 10380 apply.
- Assembly
- Fittings must be joined to hoses as specified in ISO 10380 (assembly methods, welding/brazing procedures).
- Type tests
- Leakage test: hydraulic pressure at 1.5 × maximum allowable pressure for ≥ 1 minute with no visible leakage.
- Burst test: hydraulic pressure applied gradually until failure; burst pressure must be ≥ 4 × maximum allowable pressure.
- Purchaser information
- Orders should state intended application, nominal size, max operating pressure, materials, temperature range, fitting type, conveyed product, test certificate needs and packaging requirements.
Applications and users
- Who uses EN ISO 10806:2003: manufacturers of corrugated metal hose fittings, piping engineers, procurement/specification teams, test laboratories, and installers.
- Typical applications: flexible connections in chemical, petrochemical, power generation, HVAC, marine and general industrial piping where vibration, thermal expansion or movement require corrugated metal hoses and reliable fittings.
Related standards
EN ISO 10806:2003 is essential for ensuring compatibility, safety and tested performance of fittings used with corrugated metal hoses in industrial pipework systems.
