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PLEASE OFFER HIGH QUALITY . 1 VALVES ARE ALL FLANGED CONCENTRIC TYPE , PN. 16 , AND TO BE TESTED AT SITE UNDER PRESSURE OF 1.5 *16 24 BAR 2- BUTTERFLY VALVES AND GATE VALVES SPECIFICATION : BODY AND DESK FROM DUCTILE IRON , ACCORDING TO ASTM NO. A 536 - GRADE 60 -40 -18 , SEATS FROM BRONZE ,AND COLUMNS FROM STAINLESS SATEEL ,FILLINGS AND GASKET FROM GOOD ARTIFICIAL RUBBER CAN STAND AGAINST WHETHER FOR MIN. 5 YEARS , INSIDE INSULATION COAT BY NON TOXIC EPOXY , OUTSIDE PAINTING COATS ARE AS MANUFACTURER RECOMMENDATION , .PLEASE CONTACT ME IN MY EMAIL *******@*****.com