GB/T 5565.2-2017Rubber and plastics hoses and tubing -- Measurement of flexibility and stiffness -- Part 2: Bending tests at sub-ambient temperatures (English PDF)
橡胶和塑料软管及非增强软管 柔性及挺性的测量 第2部分：低于室温弯曲试验
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Issued by
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Level / Type
National · Recommended
Issue date
September 7, 2017
Implementation date
April 1, 2018
Scope
GB/T 5565.2-2017 is the English-translated version of 橡胶和塑料软管及非增强软管 柔性及挺性的测量 第2部分：低于室温弯曲试验.
GB/T 5565.2-2017 is the Chinese standard "Rubber and plastics hoses and tubing -- Measurement of flexibility and stiffness -- Part 2: Bending tests at sub-ambient temperatures".
Its scope clause reads: GB/T 5565 provisions of this part of the room temperature conditions below the rubber and plastic hoses and non-reinforced hose bending to a specific radius Two methods of measuring stiffness, and one method of measuring flexibility.
Method A is suitable for non-collapsible rubber and plastic hoses up to and including 25mm in diameter, including unreinforced hoses. this The method gives the measure of the stiffness of hoses or unreinforced hoses when the temperature is below the standard laboratory temperature.
Method B applies to rubber and plastic hoses up to 100 mm ID and unreinforced hoses, When the shaft is bent, evaluate its flexibility. It can also be used as a routine quality control test.
Method C applies to rubber and plastic hoses over 100mm in diameter (including 100mm) and non-reinforced hoses. This method is given Method of measuring hoses and non-reinforced hose stiffness below room temperature.
This method is only applicable to non-collapsible and non-reinforced hoses. Its clauses include terms and definitions.
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Document preview — GB/T 5565.2-2017
National Standard of the People's Republic of China
- ICS
- 23.040.70
- Classification
- G 42
- Replacing
- GB/T 5564-2006
Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 3.1 Bending
- 3.2 Flexible flexibility
1 Scope
GB/T 5565 provisions of this part of the room temperature conditions below the rubber and plastic hoses and non-reinforced hose bending to a specific radius
Two methods of measuring stiffness, and one method of measuring flexibility.
Method A is suitable for non-collapsible rubber and plastic hoses up to and including 25mm in diameter, including unreinforced hoses. this
The method gives the measure of the stiffness of hoses or unreinforced hoses when the temperature is below the standard laboratory temperature.
Method B applies to rubber and plastic hoses up to 100 mm ID and unreinforced hoses,
When the shaft is bent, evaluate its flexibility. It can also be used as a routine quality control test.
Method C applies to rubber and plastic hoses over 100mm in diameter (including 100mm) and non-reinforced hoses. This method is given
Method of measuring hoses and non-reinforced hose stiffness below room temperature. This method is only applicable to non-collapsible and non-reinforced hoses.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
ISO 1402 Rubber and plastics hoses and hose assemblies - Hydrostatic test method (Rubberandplasticshosesandhose assemblies-Hydrostatictesting)
ISO 8330 Rubber and plastics hoses and hose assemblies terms (Rubberandplasticshosesandhose assemblies-Vocabulary)
ISO 23529 Rubber physical test methods - Sample preparation and conditioning procedures (Rubber-Generalproceduresforpre- paringandconditioningtestpiecesforphysicaltestmethods)
3 Terms and definitions
ISO 8330 defined and the following terms and definitions apply to this document.
3.1 Bending
At specified temperatures, the straight-line sample is formed or applied force to make it arc-shaped process.
3.2 Flexible flexibility
Hoses are easy to bend without any damage, such as bending, collapsing, cracking or cracking.
For example, a hose can be bent around the mandrel.
GB/T 5563 | GB/T 5563 | GB/T 5567 | GB/T 5568 | GB/T 5565.3 | GB/T 5565.1 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.
Referenced standards
Normative references
ISO 1402 · ISO 8330 · ISO 23529
Cited by
- GB/T 10546-2026Rubber hoses and hose assemblies for liquefied petroleum gas (LPG) in the liquid or gaseous phase and natural gas up to 2.5 MPa - Specification
- GB/T 18948-2025Rubber hoses and tubing for cooling systems for automotives - Specification
- GB/T 24146-2022Rubber hoses and hose assemblies for use in oil burners - Specification
- GB/T 39309-2020Rubber hoses and hose assemblies. Wire-or textile-reinforced single-pressure types for hydraulic applications. Specification
- GB/T 39313-2020Rubber hoses and hose assemblies. Compact wire-braid-reinforced hydraulic types for oil-based or water-based fluids. Specification
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GB/T 5565.3-2017 — Rubber and plastics hoses and tubing -- Measurement of flexibility and stiffness -- Part 3: Bending tests at high and low temperatures
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