Overview
ISO 16851:2012 specifies a reproducible method to determine the net length of an endless (spliced) textile conveyor belt. The procedure applies to all textile construction belts except those containing steel-cord reinforcement and is not suitable for light conveyor belts covered by ISO 21183-1. The standard is intended to support consistent acceptance testing, splicing verification and quality control of conveyor belting.
Key Topics
l = (AB + BC + CD + ... + XA) - π·d
where d is the belt thickness and results are expressed in millimetres.
- Test report - the report shall include reference to ISO 16851, belt identification, net length (mm) and measurement date.
Applications
ISO 16851:2012 delivers practical value for:
- Splicing and installation - verify that splice length and belt circumference meet specifications before fitting.
- Quality control and acceptance - standardised net length measurement for supplier/customer agreements.
- Inventory and maintenance planning - accurate length data supports spare-belt stock and refurbishment decisions.
The method improves repeatability of length measurement, reduces disputes, and helps ensure correct belt tracking and equipment compatibility.
Related Standards
- ISO 18573 - test atmospheres and conditioning periods referenced for measurement conditions.
- ISO 14890 - provides tolerances on lengths of endless conveyor belts.
- ISO 21183-1 - covers light conveyor belts (this ISO 16851 procedure is not suitable for those belts).
For procurement, acceptance testing and technical documentation, reference ISO 16851:2012 to ensure consistent, defensible net length measurement of textile endless (spliced) conveyor belts.