AS 2321-1979

Specifies manufacture and performance, materials, dimensions and mechanical properties of electrically welded round steel short-link chain, together with the requirements for testing, inspection and marking and the provision of test certificates. The system of classification for the ISO quality grades is the single system type using letters. Appendices provide guidance on finishes other than self-coloured, instruments for measuring the mean diameter of chain links, and requirements for chain testing machines.