2004/316/EC: Commission Decision of 5 April 2004 terminating the investigation into the alleged circumvention of anti-dumping measures imposed by Council Regulation (EC) No 2320/97, as last amended by Council Regulation (EC) No 235/2004, on imports of certain seamless pipes and tubes of iron or non-alloy steel originating in Russia and of anti-dumping measures imposed by Council Regulation (EC) No 348/2000, as last amended by Council Regulation (EC) No 1515/2002 on imports of certain seamless pipes and tubes of iron or non-alloy steel originating in Ukraine by wrong declaration of imports of the same product and by imports of certain seamless pipes and tubes of alloy steel, other than stainless steel, originating in Russia and Ukraine and terminating the registration of such imports imposed by Commission Regulation (EC) No 1264/2003