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API 7-1 Drilling String Valves
Mavharuvhu ekuboorera anomisa mvura kuti isayerera ichikwira kumusoro kwetambo yekuboorera kazhinji kana chibooreso chichikaba chichibva chadzika pasi.LANDRILL inogona kupa premium quality Full opening safety valve(FOSV), Kelly valve, Inside blowout preventer(IBOP), Drop-in check valve. , Float valve.
Kamuri 703 Chivako B, Greenland pakati, Hi-tech yekuvandudza zone Xi'an, China
86-13609153141
