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Po’lat quvur (o’ralgan po’lat): payvand chokini termal mustahkamlash bilan elektr payvandlangan tekis tikuv St. 20, tashqi diametri 127,0 m, devor qalinligi 6,0 mm — MXIK (IKPU) kodi 07306001005003009 · Tasnif by Krafta