Walla, comparison between loaded BHP ore waggons from Comeng WA in 2925 and from Astra Vagoane, Arad Romania in 3312. 2925 is from a batch of four hundred built in 1971 by Comeng WA, while 3312 is from a batch of three hundred and fifty built in 1988 by Astra Vagoane, of which only two hundred and eighty-four didn't enter service. The Comeng build features square side and floor joins, while the Astra Vagoane build is all rounded. 20th of June 2011.