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پروفیل ساختمانیپروفیل صنعتیپروفیل zپروفیل آلومینیومپروفیل استیلچهار پهلوریل آسانسور میلگرد ساده ۲۵ فولاد متین شاخه ۶ متری بنگاه تهران قیمت روز میلگرد ساده كيلوگرم آبان ۱۱, ۱۴۰۱ ۱۲:۲۳ بهتری
The pig iron made by the blast furnace system has nearly 4–5% carbon (by mass), with tiny quantities of other impurities like sulfur, magnesium, phosphorus, and manganese. This high amount of carbon can make it somewhat weak and brittle. minimizing the amount of carbon to 0. ۹ درصدی نسبت به مدت مشابه سال پیش میلاد