مناقصه خرید کالای داخلی-واحد لوله وحفاری :SURFACE SAFETY VALVE, CONSIST OF REVERSE ACTING GATE VALVE, FULL BORE, FLANGED END :SURFACE SAFETY VALVE, CONSIST OF ALL NECESSARY TUBING AND FITTINGS TO COMPLETE THE SYSTEM LOW PRESSURE PILOT SET ON: 75-1500 PSI NO ۱۰۰ HIGH PRESSURE PILOT SET ON: 500-4500 PS1 (LEVEL OF INSPECTION: 2 (L.0.1:2 MCAPF.:DR/09/92/002, DR/1402/026, DR/1403/87 OTHER APPROVED EQUIVALENT: M.S.A, SHERKATE BEHSAZAN JONOOB, WETCO IN. API 5000 PSI WP, 6-3/8IN. BORE 7-1/16 01