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 (1032) 24200 - Manufacture of tubes, pipes, hollow profiles and related fittings, of steel (1055) 24310 - Cold drawing of bars (49) 24320 - Cold rolling of narrow strip (59) 24330 - Cold forming or folding (177) 24340 - Cold drawing of wire (55) 24410 - Precious metals production (460) 24420 - Aluminium production (317) 24430 - Lead, zinc and tin production (43) 24440 - Copper production (96) 24450 - Other non-ferrous metal production (401) 24460 - Processing of nuclear fuel (71) 24510 - Casting of iron (173) 24520 - Casting of steel (267) 24530 - Casting of light metals (221) 24540 - Casting of other non-ferrous metals (273)