Product requirements : pig iron for steel making Specifications: Carbon 3.5-4.6 Sulr 0.08 max Silicon 1.2 max Manganese 1.25 max srus 0.15 max Size : weighing 5-8kg per piece single notch. Broken pieces below 25mm max 1% allowed 0.5% non-metallic impurities, dirt and dust allowed.