ISO 23297:2017 PDF

Thermoplastic hoses and hose assemblies — Wire or synthetic yarn reinforced single-pressure types for hydraulic applications — Specification

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Title (English):

ISO 23297:2017

Thermoplastic hoses and hose assemblies — Wire or synthetic yarn reinforced single-pressure types for hydraulic applications — Specification

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 13
Publication date:: December 6, 2017
Edition:: ISO IS 23297 edition 2 version 1
ICS:: 23.100.40

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Description (English):

ISO 23297:2017 specifies requirements for eight classes and two types (construction with adhesive bond between layers and construction without adhesive bond between layers) of wire or synthetic yarn reinforced hydraulic hoses and hose assemblies of nominal size from 3,2 to 31,5. Each class has a single maximum working pressure for all sizes. Such hoses are suitable for use with hydraulic fluids HH, HL, HM, HR, and HV as defined in ISO 6743‑4 at temperatures ranging from −40 °C to +100 °C for grades A and B and −40 °C to +120 °C for grades C and D. ISO 23297:2017 does not include requirements for end fittings. It is limited to the performance of hoses and hose assemblies. The hose assembly maximum working pressure is governed by the lowest maximum working pressure of the components. NOTE It is the responsibility of the user, in consultation with the hose manufacturer, to establish compatibility of the hose with the fluid to be used.

Technical details

Technical committee: ISO/TC 45/SC 1 - Rubber and plastics hoses and hose assemblies
SKU: ISO 23297:2017

Abstract

Overview

ISO 23297:2017 specifies performance and construction requirements for thermoplastic hoses and hose assemblies that are wire- or synthetic‑yarn reinforced, single‑pressure types for hydraulic applications. The standard covers eight pressure classes (MWP 35 to 560 bar) and nominal sizes from 3.2 mm to 31.5 mm, with two construction types (with and without adhesive bond between layers) and four impulse‑resistance grades (A–D). It focuses on hose and assembly performance (not end fittings) and defines temperature and fluid compatibility limits for hydraulic fluids HH, HL, HM, HR and HV (per ISO 6743‑4).

Key topics and technical requirements

Classification: Eight classes by maximum working pressure (35, 70, 140, 210, 280, 350, 420, 560 bar); two types - type 1 (adhesive bond between layers) and type 2 (no adhesive bond); grades A–D for impulse resistance.
Operating conditions: Suitable for −40 °C to +100 °C (grades A & B) and −40 °C to +120 °C (grades C & D).
Materials and construction: Thermoplastic fluid‑resistant lining, steel wire or synthetic‑yarn reinforcement layers, and oil/weather‑resistant thermoplastic cover. Additional protective layers allowed.
Performance tests: Hydrostatic testing, hydraulic‑pressure impulse, impulse resistance (cycles at defined % of MWP), change in length, minimum bend radius, resistance to impulse, leakage of hose assemblies, cold flexibility, vacuum resistance, ozone and UV exposure, and adhesion testing for bonded types.
Dimensions & tolerances: Internal/external diameters, outer cover thickness, concentricity and recommended supply lengths (per ISO 4671 and annexes).
Marking & documentation: Requirements for hose and assembly marking, packaging, storage and test reports. Assembly MWP is limited by the lowest‑rated component.
User responsibility: Users must confirm fluid compatibility with the hose in consultation with the manufacturer.

Applications and who uses this standard

ISO 23297:2017 is intended for:

Hose manufacturers designing and certifying thermoplastic hydraulic hoses and hose assemblies
OEMs and specifiers of hydraulic systems in mobile machinery, construction, agriculture and industrial equipment
Procurement, quality and maintenance teams selecting hoses by pressure class, size and impulse grade
Test laboratories performing performance and type‑approval testing

Practical benefits include standardized pressure/size selection, predictable impulse life, consistent testing methods and clearer requirements for marking, packaging and documentation.

Related standards

ISO 6743‑4 (hydraulic fluids classifications)
ISO 1402, ISO 6803, ISO 7233, ISO 7326:2016, ISO 8033, ISO 4671, ISO 10619‑1/2, ISO 8330 (referenced test and vocabulary standards)

Keywords: ISO 23297:2017, thermoplastic hoses, hose assemblies, hydraulic applications, wire reinforced, synthetic yarn reinforced, single‑pressure, maximum working pressure, impulse resistance, hose testing.

Related standards

Standards mentioned in the description

Abstract

Overview

Key topics and technical requirements

Classification: Eight classes by maximum working pressure (35, 70, 140, 210, 280, 350, 420, 560 bar); two types - type 1 (adhesive bond between layers) and type 2 (no adhesive bond); grades A–D for impulse resistance.
Operating conditions: Suitable for −40 °C to +100 °C (grades A & B) and −40 °C to +120 °C (grades C & D).
Materials and construction: Thermoplastic fluid‑resistant lining, steel wire or synthetic‑yarn reinforcement layers, and oil/weather‑resistant thermoplastic cover. Additional protective layers allowed.
Performance tests: Hydrostatic testing, hydraulic‑pressure impulse, impulse resistance (cycles at defined % of MWP), change in length, minimum bend radius, resistance to impulse, leakage of hose assemblies, cold flexibility, vacuum resistance, ozone and UV exposure, and adhesion testing for bonded types.
Dimensions & tolerances: Internal/external diameters, outer cover thickness, concentricity and recommended supply lengths (per ISO 4671 and annexes).
Marking & documentation: Requirements for hose and assembly marking, packaging, storage and test reports. Assembly MWP is limited by the lowest‑rated component.
User responsibility: Users must confirm fluid compatibility with the hose in consultation with the manufacturer.

Applications and who uses this standard

ISO 23297:2017 is intended for:

Hose manufacturers designing and certifying thermoplastic hydraulic hoses and hose assemblies
OEMs and specifiers of hydraulic systems in mobile machinery, construction, agriculture and industrial equipment
Procurement, quality and maintenance teams selecting hoses by pressure class, size and impulse grade
Test laboratories performing performance and type‑approval testing

Practical benefits include standardized pressure/size selection, predictable impulse life, consistent testing methods and clearer requirements for marking, packaging and documentation.

Related standards

ISO 6743‑4 (hydraulic fluids classifications)
ISO 1402, ISO 6803, ISO 7233, ISO 7326:2016, ISO 8033, ISO 4671, ISO 10619‑1/2, ISO 8330 (referenced test and vocabulary standards)

ISO 23297:2017 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Applications and who uses this standard

Related standards

Related standards

Abstract

Overview

Key topics and technical requirements

Applications and who uses this standard

Related standards

Related standards

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