FIELD: metallurgy.
SUBSTANCE: method includes metal modification by calcium after overheating of the metal containing maximum 0.003% of sulphur, and maximum 0.01% of aluminium, above liquidus temperature at least 120°C, and long-term, for at least 20 minutes, metal purging by argon under vacuum conditions. Pouring is performed under conditions of metals electromagnetic mixing in the crystalliser at current 120-200 A and frequency 2.0-4.0 Hz depending on diameter of continuously cast blank.
EFFECT: method ensures specified metal purity as per corrosion-active non-metal inclusions, increased pipes resistance during operation in corrosion mediums.
2 cl, 3 tbl
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