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Po’lat quvur (o’ralgan po’lat): 13, Neft va gaz sanoati uchun tekis chokli payvandlangan po’lat quvur API Spec 5L 920x11,0 BN PSL-2 SAWL — MXIK (IKPU) kodi 07306001005013223 · Tasnif by Krafta