Overview - ISO 6807:2003 (rubber hoses for rotary drilling & vibration)
ISO 6807:2003 is the International Standard specifying requirements for textile- and steel-reinforced rubber hoses and hose assemblies used in rotary drilling and vibration applications. It covers hoses for pumping large volumes of water‑based and/or oil‑based drilling mud at high pressure, up to a maximum fluid temperature of 82 °C, with a minimum aniline point of 66 °C (per ISO 2977). The standard applies to hoses rated for ambient temperatures −20 °C to +52 °C, is focused on durability (ageing and tropical resistance) and expressly excludes hoses intended for gases.
Key topics and technical requirements
- Classification / Grades: Five pressure grades (A–E) defined by maximum working and proof pressures; burst pressure minima specified per grade.
- Materials & construction:
- Lining: oil- and water‑resistant rubber.
- Reinforcement: textile and/or steel layers.
- Cover: oil-, abrasion- and weather‑resistant rubber with a longitudinal coloured lay line.
- Couplings: carbon or stainless steel, traceable to steel manufacturer; line‑pipe threads allowed per ISO 10422.
- Dimensions & tolerances: Internal diameters, minimum bend radii and finished‑length tolerances specified (measured per ISO 4671).
- Physical properties (compound tests): tensile strength, elongation, accelerated ageing, ozone resistance, oil swell, abrasion limits (methods: ISO 37, ISO 188, ISO 1431-1, ISO 1817, ISO 4649).
- Performance tests:
- Bend radius (ISO 1746), burst and hydrostatic tests (ISO 1402 and Annex A) including working/proof pressure behavior, twist/movement/elongation limits, and vacuum test (ISO 7233).
- Marking, storage guidance (ISO 8331) and manufacturing traceability requirements.
- Design verification & testing frequency: Design verification on largest size at least every 5 years or upon design/material/manufacturer change (exceptions allowed with independent certification).
Applications and practical value
- Intended uses:
- Flexible high‑pressure connections in the mud supply circuit (e.g., between standpipe and swivel).
- Long rotary hoses between barges and offshore rigs (lengths >13.5 m).
- Shorter vibrator hoses (≤9 m) to isolate vibration and accommodate misalignment.
- Practical benefits:
- Ensures safety and reliability of high‑pressure mud handling systems.
- Provides procurement and QA criteria for manufacturers, purchasers and testing labs.
- Helps avoid premature failures from abrasion, oil exposure, ozone or ageing.
Who would use this standard
- Hose manufacturers and raw‑material specifiers
- Offshore/onshore drilling contractors and maintenance teams
- Procurement, QA/QC and engineering departments
- Test laboratories and certification bodies
Related standards
Keywords: ISO 6807, rubber hoses, hose assemblies, rotary drilling, vibration hoses, drilling mud, high‑pressure hoses, burst pressure, hydrostatic testing, hose grading.