Overview
ISO 6224:2024 specifies requirements for textile‑reinforced thermoplastics hoses intended for general‑purpose water discharge (non‑potable). This fifth edition updates dimensions, physical properties, testing and marking rules for flexible thermoplastic‑lined hoses with textile reinforcement and a thermoplastic cover. The standard defines construction, performance limits and quality‑control testing to ensure safe and consistent hose manufacture.
Key topics and technical requirements
- Scope and exclusions
- For general‑purpose water‑discharge hoses only; not intended for potable (drinking) water, washing‑machine inlets, firefighting, certain agricultural machines or consumer garden hoses.
- Construction
- Three‑part construction: flexible thermoplastic lining, textile reinforcement (natural or synthetic), and flexible thermoplastic cover (smooth or fluted).
- Lining and cover must be uniform, concentric and free from visible defects.
- Classification / Pressure ratings
- Type 1 (low): 0.6 MPa (6 bar) at 23 °C; 0.36 MPa (3.6 bar) at 60 °C.
- Type 2 (medium): 1.0 MPa (10 bar) at 23 °C; 0.65 MPa (6.5 bar) at 60 °C.
- Type 3 (high): 2.5 MPa (25 bar) at 23 °C; 1.6 MPa (16 bar) at 60 °C.
- Dimensions and tolerances
- Inside diameters, tolerances and minimum wall thicknesses specified (see table values in the standard, e.g., 4–50 mm sizes).
- Concentricity limit: max 1.0 mm total indicator reading.
- Cut‑length tolerances per ISO 1307.
- Material and physical properties
- Minimum tensile strength: 10.0 MPa for lining and cover.
- Minimum elongation at break: 250%.
- Ageing limits (ISO 188): change in tensile strength ±15%, elongation ±25%.
- Loss on heating (max): 4% (ISO 176).
- Finished hose tests
- Proof and burst pressure requirements by type (specified in MPa/bar).
- Adhesion between components ≥ 1.5 kN/m (ISO 8033).
- UV resistance, flexibility (ISO 10619), low‑temperature performance and dimensional change limits.
- Testing and certification
- Type, routine and production tests defined; type tests repeated at most every five years or on manufacturing changes.
- Test reports or certificates supplied on request.
- Marking
- Continuous durable marking required: manufacturer, ISO 6224 reference, hose type, inside diameter, maximum working pressure, and manufacturing date (example: XXX/ISO 6224/type 1/25/0,6 MPa/2Q23).
Applications
- Industrial and municipal water‑discharge uses where non‑potable water handling is required (e.g., transfer lines, temporary pumping, irrigation systems excluding consumer garden hoses).
- OEMs, hose manufacturers and distributors specifying reliable, tested hoses for moderately demanding pressure environments.
Who should use this standard
- Hose manufacturers and converters
- Quality managers and test laboratories
- Procurement and specification engineers
- Equipment OEMs and industrial end‑users needing compliant, tested water‑discharge hoses
Related standards (normative references)
Key referenced documents include ISO 1402 (hydrostatic testing), ISO 4671 (dimensional measurement), ISO 527‑2 (tensile testing), ISO 8033 (adhesion), ISO 10619‑1/2 (flexibility), ISO 30013 (light exposure), ISO 1307 (hose sizes/tolerances), ISO 176 and ISO 188.
Keywords: ISO 6224, thermoplastics hoses, textile‑reinforced, water‑discharge hoses, hose specification, pressure ratings, hose testing, hose marking, hose dimensions.
Open preview (PDF)Thermoplastics hoses, textile-reinforced, for general-purpose water applications — Specification