AC downpipes, adapters, junctions, shoe bends and offset pipes. Usually had matching connections with AC gutters to enable supply and install together. T-shaped spreaders  designed for tiered roof systems (eg Queenslanders).

AC downpipes, particularly if painted, may have appearance of PVC. If original AC gutters exist, chances are downpipes are also AC.  

Pipe shapes were round, oval (cottage) and rectangular with hub ends for junctions.

Spreaders were connected to upper level downpipes for flow onto lower level roofs.