Hoastar fully welded ball valve to be suitable in all neutral liquid or the gas medium pipeline makes the cut-off to use.the main use includes city coal gas, natural gas, transmission pipeline, district connection heating, water supply and petrochemical, electrical station, food industry, paper making ETC.. Nominal diameter: DN15MM-80MM (1/2"-32") Nominal pressure: PN1.6Mpa-10Mpa(ANSI class 150-600) The screw thread ends, the flange ends, the butt welding ends, the socket weldings joining, and other arbitrary combining ways of handle, wheel gear, electric actuated and pneumatic actuated operation of full welding float ball, valve and fixed ball valve.