Manufacture of basic metals Standard Industrial Classification (SIC) codes of UK-based importers and exporters 24100 - Manufacture of basic iron and steel and of ferro-alloys (1071) 24200 - Manufacture of tubes, pipes, hollow profiles and related fittings, of steel (1106) 24310 - Cold drawing of bars (53) 24320 - Cold rolling of narrow strip (63) 24330 - Cold forming or folding (180) 24340 - Cold drawing of wire (62) 24410 - Precious metals production (522) 24420 - Aluminium production (332) 24430 - Lead, zinc and tin production (44) 24440 - Copper production (100) 24450 - Other non-ferrous metal production (421) 24460 - Processing of nuclear fuel (72) 24510 - Casting of iron (180) 24520 - Casting of steel (283) 24530 - Casting of light metals (232) 24540 - Casting of other non-ferrous metals (292)