Scope
ISO 21244:2008 specifies dimensional requirements for hitch rings of agricultural trailers and trailed implements designed for attachment to tractor drawbars according to ISO 6489-3.
Application
For Dugong, this is relevant only where the actual towing connection uses the interface covered by the standard.
Verification
Hitch type, dimensions, rating, tractor drawbar category and imposed loads should be confirmed for each configuration before describing it as conforming.
Related standards pages
ISO standards hub · Grader scraper ISO guide · Standards vs certification
Rental pathway
For an existing Dugong machine and job suitability, continue to models or rental and leasing. New machine development belongs with Frank’s Final Grade.
Standards references are informational. Confirm the current standard, component documentation, engineering requirements and applicable Australian law before making a conformity or certification claim.