1.Stem A182F 1Cr13 (by) the whole forging and modulation handle, hardness of HB220-250.
2.seal face:1Cr13 . Alloy

Valves in petroleum, natural gas, coal and ore mining, processing and pipe system, in chemical products, pharmaceutical and food production, In hydropower and thermal power of nuclear power production system box, In the cities and industrial enterprise of water, heating and gas supply system, In farm irrigation systems, In metallurgical production system in a wide range of applications, is a production and construction, national defense construction and people's life of mechanical products, ball valves is important in all kinds of pipeline system is closed for truncated or connect medium flow, according to the predetermined program transmission medium to each designated point.