... Furnace used for thermal insulation of steel, alloy steel, cast iron, stainless steel, copper, aluminum, , magnesium, Holding ... used for thermal insulation of steel, alloy steel, cast iron, stainless steel, copper, aluminum, zinc, magnesium, ferrous ... , petroleum machinery industry, coal mining machinery industry, pipe industry, heat treatment industries. Item Unit ParameterCapacity RatingT20Maximum ...