Profile: Hebei Yonglong Valve Co.,Ltd. specializes in manufacturing different type of valves. We offer high pressure valves, low-voltage class casting, stainless steel valves, cast iron valves, ductile iron valves, malleable iron valves, gray cast iron valves, butterfly valve, gate valve, globe valve, ball valve, plug valve, and magnetic torque valves. Flanged steel ball valves applies to the water, steam or oil pipeline which is non-corrosive medium and the pipeline must be at the working temperature of less than 200°C.