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 (1056) 24200 - Manufacture of tubes, pipes, hollow profiles and related fittings, of steel (1090) 24310 - Cold drawing of bars (52) 24320 - Cold rolling of narrow strip (62) 24330 - Cold forming or folding (180) 24340 - Cold drawing of wire (56) 24410 - Precious metals production (489) 24420 - Aluminium production (325) 24430 - Lead, zinc and tin production (44) 24440 - Copper production (98) 24450 - Other non-ferrous metal production (420) 24460 - Processing of nuclear fuel (71) 24510 - Casting of iron (177) 24520 - Casting of steel (279) 24530 - Casting of light metals (228) 24540 - Casting of other non-ferrous metals (286)