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GB/T 37221-2018Self-floating rubber hoses and hose assemblies for dredging applications (English PDF)

自浮式排泥橡胶软管及软管组合件

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 28, 2018

Implementation date

November 1, 2019

Scope

GB/T 37221-2018 is the English-translated version of 自浮式排泥橡胶软管及软管组合件.

GB/T 37221-2018 covers self-floating rubber hoses and hose assemblies used in dredging to carry mixtures of seawater, silt, clay, sand, coral reef material and gravel with a density of 1.0 g/cm³ to 2.3 g/cm³, at ambient temperatures from -20 °C to 45 °C. It specifies their structure, dimensions, requirements, test methods and inspection rules.

It defines the fully floating dredging hose, in which the whole hose body except the end fittings carries buoyant material.

The test methods it draws on include hydrostatic testing of hoses, flexibility and stiffness, adhesion between layers, rubber-to-metal peel strength, tensile and tear properties, hot air ageing, ozone cracking and abrasion of the rubber, compression and tensile tests on foam materials, flange requirements and Brinell hardness. It was issued on 28 December 2018 and has applied since 1 November 2019.

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Document preview — GB/T 37221-2018

National Standard of the People's Republic of China

ICS: 83.140.40
Classification: G 42

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the structure, dimensions, requirements, test methods, inspection rules, etc. of self-floating mud hoses and hose assemblies.

This standard is applicable to seawater with a density of 1.0g/cm³~2.3g/cm³ at an ambient temperature of -20°C~45°C. A mixture of water, silt, clay, sand, and self-floating mud hoses and hose assemblies for coral reefs and gravel.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 231.1 Brinell hardness test for metallic materials - Part 1: Test methods

GB/T 528 Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber

GB/T 529 Determination of tear strength of rubber or thermoplastic rubber (pants, right angles and crescents)

GB/T 3512 vulcanized rubber or thermoplastic rubber hot air accelerated aging and heat test

GB/T 5563 rubber and plastic hose and hose assembly hydrostatic test method

Rubber and plastics hoses and non-reinforced hoses - Determination of flexibility and stiffness - Part 1 test

GB/T 6344 Determination of tensile strength and elongation at break of flexible cellular polymeric materials

GB/T 6669-2008 Determination of compression set of flexible foam polymeric materials

GB/T 7528 rubber and plastic hose and hose assembly terminology

Static tensile test of GB/T 7762 vulcanized rubber or thermoplastic rubber resistant to ozone cracking

GB/T 8813 Determination of compressive properties of rigid foams

GB/T 9124 steel pipe flange technical conditions

GB/T 9573 Rubber and Plastic Hose and Hose Assembly Hose Size and Hose Assembly Length Measurement Method

GB/T 9576 Guide to the selection, storage, use and maintenance of rubber and plastic hose and hose assemblies

GB/T 9577 Rubber and plastic hose and hose assemblies marking, packaging and transport rules

GB/T 9867 Determination of the abrasion resistance of vulcanized rubber or thermoplastic rubber (Rotary roller type abrasion machine method)

GB/T 14905 Determination of bond strength between layers of rubber and plastic hoses

GB/T 15254 vulcanized rubber and metal bonding 180° peel test

GB/T 33382-2016 inner armored rubber hose and hose assembly

3 Terms and definitions

The following terms and definitions as defined in GB/T 7528 apply to this document.

3.1 Fully floating mud rubber hose

When the inner cavity is filled with medium, all the pipe body (excluding the end joint) is provided with buoyant material, and the outer diameter of the floating body portion is uniform hose.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 9124

Similar standards

GB/T 10010-2026|GB/T 46051-2025|GB/T 46167-2025|GB/T 10010-2009|GB/T 10009-2026|GB/T 11548-2026

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