ISO 6805:2020
(Main)Rubber hoses and hose assemblies for underground mining - Wire-reinforced hydraulic types for coal mining - Specification
Rubber hoses and hose assemblies for underground mining - Wire-reinforced hydraulic types for coal mining - Specification
This document specifies requirements for wire-reinforced hoses and hose assemblies for underground coal mining applications of nominal sizes 6,3 to 51 for use with: - oil-based hydraulic fluids HH, HL, HM, HR and HV as defined in ISO 6743-4 at temperatures ranging from −40 °C to +120 °C; - water-based fluids HFC, HFAE, HFAS and HFB as defined in ISO 6743-4 at temperatures ranging from −40 °C to +70 °C; - water at temperatures ranging from 0 °C to +70 °C. There is a possibility that operation at the extremes of or outside these temperature ranges materially reduce the life of the hose. These hoses are not suitable for use with fluids that have a castor oil or ester base.
Tuyaux et flexibles en caoutchouc pour les mines souterraines — Types hydrauliques avec armature de fils métalliques pour mines de charbon — Spécifications
General Information
- Status
- Published
- Publication Date
- 09-Jun-2020
- Technical Committee
- ISO/TC 45/SC 1 - Rubber and plastics hoses and hose assemblies
- Drafting Committee
- ISO/TC 45/SC 1/WG 3 - Hydraulic hoses
- Current Stage
- 9060 - Close of review
- Completion Date
- 02-Sep-2030
Relations
- Effective Date
- 17-Dec-2016
Overview
ISO 6805:2020 specifies the requirements for wire-reinforced rubber hoses and hose assemblies specifically designed for underground coal mining hydraulic applications. Covering nominal hose sizes from 6.3 mm up to 51 mm, this standard ensures optimal performance and safety in demanding mining environments. It addresses compatibility with a range of hydraulic fluids including oil-based and water-based types, and specifies temperature ratings from −40 °C to +120 °C depending on the fluid used. The standard is critical for applications requiring durable, flame-resistant, electrically conductive hydraulic hoses that withstand harsh underground mining conditions.
Key Topics
Scope and Fluid Compatibility
ISO 6805:2020 applies to hoses for use with:- Oil-based hydraulic fluids (HH, HL, HM, HR, HV) as per ISO 6743-4, rated for -40 °C to +120 °C
- Water-based hydraulic fluids (HFC, HFAE, HFAS, HFB) as defined in ISO 6743-4, rated for -40 °C to +70 °C
- Water at temperatures from 0 °C to +70 °C
Note: Hoses are not suitable for fluids with castor oil or ester base.
Construction and Materials
Hoses consist of a hydraulic-fluid-resistant rubber lining, multiple layers of steel wire reinforcement for mechanical strength, and an oil-, abrasion-, and weather-resistant rubber outer cover. The hoses must be electrically conductive and fire-resistant to meet safety regulations underground.Classification and Designation
Hoses are classified by maximum working pressure and outside diameter, following ISO 18752, ensuring compatibility and interchangeability within mining operations.Performance Requirements
- Electrical resistance must not exceed 2 MΩ/m, ensuring safety against static electricity build-up.
- Flame resistance testing requires an average flame persistence time below 30 seconds, reducing fire hazards underground.
- Abrasion resistance requirements are being developed to enhance hose durability under harsh mining conditions.
Testing and Quality Assurance
The standard mandates type and routine testing protocols including dimensional, mechanical, electrical, and flame resistance tests, with type tests repeated at least every five years or after design/manufacturing changes.Marking and Traceability
Hoses and assemblies must be permanently marked with manufacturer’s identification, standard reference (ISO 6805), hose type, nominal size, maximum working pressure, and manufacturing date. This promotes traceability and ensures compliance within mining operations.
Applications
ISO 6805:2020 hoses are specifically engineered for the underground coal mining industry where hydraulic systems require robust and safe components. Typical applications include:
- Hydraulic power transmission for mining machinery
- Fluid conveyance in hydraulic support systems used in coal extraction
- High-pressure hydraulic operations in confined and hazardous underground environments
- Systems requiring flame-retardant and electrically conductive hoses to minimize ignition risks
- Environments where hoses must withstand abrasive conditions, mechanical stresses, and exposure to a variety of hydraulic fluids
Utilization of ISO 6805:2020 compliant hoses significantly enhances operational safety, equipment longevity, and regulatory compliance in underground mining activities.
Related Standards
ISO 6805:2020 references and aligns with several key international standards that govern hose performance and safety, including:
- ISO 6743-4: Classification and specifications for hydraulic fluids compatible with hoses
- ISO 18752: General specification for wire- or textile-reinforced single-pressure hydraulic hoses and assemblies
- ISO 8030: Test methods for flammability of rubber and plastic hoses
- ISO 8031: Methods for determining electrical resistance and conductivity of hoses
- ISO 8330: Vocabulary for rubber and plastic hoses and hose assemblies
Compliance with ISO 6805:2020 ensures integration and interoperability with these connected standards, providing a comprehensive framework for hydraulic hose safety and performance in mining.
Keywords: ISO 6805:2020, hydraulic rubber hoses, underground coal mining, wire-reinforced hoses, hose assemblies, electrical resistance, flame resistance, abrasion resistance, mining hydraulic hoses, oil-based hydraulic fluids, water-based hydraulic fluids, hose testing, hose marking, ISO mining standards.
Frequently Asked Questions
ISO 6805:2020 is a standard published by the International Organization for Standardization (ISO). Its full title is "Rubber hoses and hose assemblies for underground mining - Wire-reinforced hydraulic types for coal mining - Specification". This standard covers: This document specifies requirements for wire-reinforced hoses and hose assemblies for underground coal mining applications of nominal sizes 6,3 to 51 for use with: - oil-based hydraulic fluids HH, HL, HM, HR and HV as defined in ISO 6743-4 at temperatures ranging from −40 °C to +120 °C; - water-based fluids HFC, HFAE, HFAS and HFB as defined in ISO 6743-4 at temperatures ranging from −40 °C to +70 °C; - water at temperatures ranging from 0 °C to +70 °C. There is a possibility that operation at the extremes of or outside these temperature ranges materially reduce the life of the hose. These hoses are not suitable for use with fluids that have a castor oil or ester base.
This document specifies requirements for wire-reinforced hoses and hose assemblies for underground coal mining applications of nominal sizes 6,3 to 51 for use with: - oil-based hydraulic fluids HH, HL, HM, HR and HV as defined in ISO 6743-4 at temperatures ranging from −40 °C to +120 °C; - water-based fluids HFC, HFAE, HFAS and HFB as defined in ISO 6743-4 at temperatures ranging from −40 °C to +70 °C; - water at temperatures ranging from 0 °C to +70 °C. There is a possibility that operation at the extremes of or outside these temperature ranges materially reduce the life of the hose. These hoses are not suitable for use with fluids that have a castor oil or ester base.
ISO 6805:2020 is classified under the following ICS (International Classification for Standards) categories: 73.100.30 - Equipment for drilling and mine excavation; 83.140.40 - Hoses. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 6805:2020 has the following relationships with other standards: It is inter standard links to ISO 6805:1994. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ISO 6805:2020 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 6805
Third edition
2020-06
Rubber hoses and hose assemblies
for underground mining — Wire-
reinforced hydraulic types for coal
mining — Specification
Tuyaux et flexibles en caoutchouc pour les mines souterraines —
Types hydrauliques avec armature de fils métalliques pour mines de
charbon — Spécifications
Reference number
©
ISO 2020
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
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below or ISO’s member body in the country of the requester.
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Published in Switzerland
ii © ISO 2020 – All rights reserved
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification . 1
4.1 Classes . 1
4.2 Grades and types . 2
5 Materials and construction . 2
5.1 Hoses . 2
5.2 Hose assemblies . 2
6 Requirements . 2
6.1 General . 2
6.2 Electrical resistance . 2
6.3 Flame resistance . 2
6.4 Abrasion resistance . 2
7 Frequency of testing . 3
8 Marking . 3
8.1 Hoses . 3
8.2 Hoses assemblies . 3
Bibliography . 4
Foreword
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This document was prepared by Technical Committee ISO/TC 45, Rubber and rubber products,
Subcommittee SC 1, Rubber and plastics hoses and hose assemblies.
This third edition cancels and replaces the second edition (ISO 6805:1994), which has been technically
revised. The main changes compared to the previous ed
...
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