... according to the requirements required by the heating furnace, rolling machine and finished product. The billet, after coming through the ... structural steel, carbon tool steel, spring steel, bearing steel, etc3. Machine model: one set of 3 machines 3 strands4. Radius of casting ... quality to be cast: Q235, 20MnSi, low alloy steel, 3. Machine model: 4 machines 4 strands fully arc type small square billet ...