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Po’lat quvur (o’ralgan po’lat): 14, Neft va gaz sanoati uchun spiral-chokli payvandlangan po’lat quvurlar GOST Iso 3183 1020X11. 0 B PSL - 1 SAWH — MXIK (IKPU) kodi 07306001005014465 · Tasnif by Krafta