VALVE, FITTINGS, KAWAT LAS, PIPA CARBON STEEL, PIPA GALVANIS ( USP, HOTDEEP) , PIPA SCHEDULE, PIPA CEMENT LINNING, PIPA TEMBAGA, VALVE, FITTINGS, KAWAT LAS, PIPA CARBON STEEL, PIPA GALVANIS ( USP, HOTDEEP) , PIPA SCHEDULE, PIPA CEMENT LINNING, DI SURABAYA