Valve ball of float ball Valvematerial:Carbon steel, S.S., brass, ASTM A182-F3041), A182-F316, A105, A350-LF2, A182-F6A, A182-F51, A182-F53, A564 630(17-4PH) etc.Coatings: ENP, Chrome Plating, Tungsten Carbide, Chrome Carbide, Stellite, Inconel, Special;specification:1.Class: 150LB-2500LB;2.DN: 2...