ISO 10806:2003

Overview

ISO 10806:2003 - Pipework - Fittings for corrugated metal hoses specifies the characteristics, design and test requirements for fittings used with corrugated metal hoses that conform to ISO 10380. The second edition (2003) updates type descriptions, adds a clause on design, introduces conical nipples and adaptors, and adds several fixed flange series. This standard applies to any fittings that meet the material, design, assembly and testing requirements set out in the document.

Key topics and technical requirements

• Scope & applicability: Fittings for corrugated metal hoses (and other fittings meeting the same requirements) used in pipework assemblies.
• Classification of fittings: welded screwed, welded stub, welded flanged, adaptors and types listed in the standard’s tables (e.g., fixed male, spherical nipple with swivel nut, conical nipple, tube end, loose and fixed flanges).
• Materials: Materials for welded/brazed parts are selected from ISO 10380 table(s); other parts must use ISO-standardized materials suitable for operating conditions.
• Dimensions & types: Detailed dimensional tables (Tables 3–15) and diagrams define nominal sizes, threads and key dimensions for each fitting type.
• Design limits:
  • Pressure ratings for welded screwed/stub/adaptor fittings reference ISO 10380; flanged fittings follow pressures in ISO 7268 and EN 1333.
  • Temperature considerations reference derating factors (ISO 10380) for temperatures below –20 °C or above 50 °C.
• Assembly: Fittings must be joined to hoses per ISO 10380 assembly methods.
• Type tests:
  • Leakage test: hydraulic pressure of 1.5 × maximum allowable pressure for ≥1 minute with no visible leakage.
  • Burst test: gradually increase hydraulic pressure until failure; burst pressure must be ≥4 × maximum allowable pressure. Test medium is normally water unless agreed otherwise.
• Information for purchasers: Orders should specify intended application, nominal size, maximum operating pressure, materials, temperature range, and fitting type; additional details may include conveyed product, material selection constraints, test certificates and packaging.

Applications and users

ISO 10806 is used by:

• Manufacturers of corrugated metal hose assemblies and fittings
• Design and mechanical engineers specifying pipework components
• Procurement and quality assurance teams requiring conformance criteria
• Test laboratories performing type and acceptance testing
• Installers and maintenance personnel ensuring compatible fittings and safe assembly

Typical applications include industrial fluid/gas transfer systems, process plant pipework, HVAC connections and any installation using corrugated metal hoses requiring standardized fittings and flanges.

Related standards (normative references)

Key related documents referenced by ISO 10806 include: ISO 10380, ISO 7-1, ISO 228-1, ISO 724, ISO 4144, ISO 4145, ISO 6761, ISO 7268, EN 1092-1, EN 1333 and ISO 7369. These define hose requirements, thread standards, flange dimensions and welding preparation.

Keywords: ISO 10806:2003, fittings for corrugated metal hoses, corrugated metal hose fittings, pipework fittings, flanges, type tests, material requirements, assembly method.