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Special Steel Bars and Tubes manufacturing process Melting/Refining/Casting 150-t electric arc furnace melting 60-t electric arc furnace melting Rolled bars Tubes Forged bars Flat square bars Special melting Turning Continuous casting Bloom Inspection Heat treatment Inspection Inspection Bloom Ingot casting Ingot Peeling Cold pilgering Ingot 15t ESR 5t VAR 1t VIM Large-diameter bar rolling Billet rolling Cogging Billet inspection Billet Forging Bar and wire rod rolling Assel tube rolling Hot extrusion Continuous casting Ladle furnace refining RH vacuum degassing Ladle furnace refining RH vacuum degassing Hot working Heat treatment Cold working Inspection Products Heat treatment Planing Heat treatment Heat treatment Special melting further improves the cleanliness of steel and the homogeneity of steel quality. High-cleanliness materials created through atmosphere melting are used as base materials for 15 t ESR and 5 t VAR. *The manufacturing process once ingots are created is the same as with special steel bars and tubes.
