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Beag echinishining roli

Ichki payvandlash jarayoni tugaganidan keyin ortiqcha payvandlashning ichidan ortiqcha payvandlashning o'rni va naychaning ichidagi fluxni tozalash. Ishlatilgan usulda spiral trubani ortiqcha kran bilan ko'tarishni va shlak va oqimni tabiiy ravishda siljishiga ruxsat berish uchun ma'lum bir burchakka ko'tarishni o'z ichiga oladi.