Overview
ISO 7369:2020 is the international standard defining the vocabulary for metal hoses and hose assemblies used in pipework systems. Issued by the International Organization for Standardization (ISO), this fourth edition standard replaces the previous 2004 edition and provides updated terminology and definitions essential for manufacturers, designers, and users of metal hoses. The document covers terms related to both stripwound and corrugated metal hoses and hose assemblies, as well as their component parts.
This standard ensures consistent and clear communication across industries dealing with metal hose products, which are widely used in applications requiring flexibility, pressure resistance, and durability in piping systems.
Key Topics
- Metal Hoses
- Stripwound metal hoses: Constructed from helically wound metal strips, designed to flex by sliding turns over each other.
- Corrugated metal hoses: Made from corrugated tubes or strips, providing flexibility through the bending of corrugations.
- Metal Hose Assemblies
Assemblies include hoses fitted with permanent end fittings suitable for connection to piping systems.
- Pressure Ratings and Temperatures
- Nominal pressure (PN), maximum operating pressure, design pressure, and maximum allowable pressure are precisely defined for safe and efficient design.
- Definitions related to maximum and minimum allowable temperatures support performance specifications.
- Structural Components
- Terms like braid, ferrule, packing, internal and external protections, and coiling methods are detailed.
- Key geometrical terms such as inside diameter, outside diameter, bend radius, pitch of hose profile enhance design accuracy.
- Performance Terms
- Flexibility and pliability describe the hose’s capability to endure bending during installation and operation.
- Test pressure and burst pressure ensure product safety standards.
- Multilingual Terms
Annex A provides equivalent terms in English, French, German, and Dutch, facilitating international understanding.
Applications
ISO 7369:2020 is applicable in diverse industrial sectors where metal hoses play a critical role, including:
- Oil and Gas Industry
Flexible connections in pipelines for fluid transport, where pressure and temperature ratings are vital.
- Chemical and Petrochemical Plants
Conveying corrosive or high-temperature fluids safely with reliable hose assemblies.
- Power Generation
Expansion joints and connectors requiring precise terminology for specification and maintenance.
- HVAC and Plumbing
Metal hoses as flexible components in heating, ventilation, and air conditioning systems.
- General Manufacturing
Flexible metal hoses used for vibration absorption and movement compensation in machinery and equipment.
By standardizing the terminology for metal hose assemblies, ISO 7369:2020 supports clear technical documentation, procurement, certification, quality control, and training processes.
Related Standards
Professionals working with ISO 7369:2020 should also consider related international and European standards for comprehensive understanding and compliance:
- ISO 6708: Pipework components - Definition and selection of nominal size (DN).
- ISO 7268: Pipe components - Definition of nominal pressure (PN).
- EN 1333: Pipework components - Definition and selection of nominal pressure.
These complementary standards define critical dimensions and values that align with the vocabulary specified in ISO 7369:2020, facilitating uniform engineering practices.
Keywords: ISO 7369:2020, metal hoses, hose assemblies, stripwound metal hose, corrugated metal hose, pipework vocabulary, nominal pressure, maximum operating pressure, flexibility, metal hose components, metal hose terminology, international standards, pipework assemblies.
For detailed terminology and multilingual references, ISO 7369:2020 is essential for engineers, designers, and quality professionals involved in the specification, manufacture, and use of metal hose systems globally.
