... > SECTION XV - BASE METALS AND ARTICLES OF BASE METAL > CHAPTER 72 - IRON AND STEEL > I. PRIMARY MATERIALS; PRODUCTS IN GRANULAR OR POWDER FORM > 7201 Pig iron and spiegeleisen in pigs, blocks or other primary forms > Non-alloy pig iron containing by weight 0,5 % or less of phosphorus > Containing by weight not less than 0,4 % of manganese > Containing by weight more than 1 % of silicon