Ultrasonic Water Meter, Woltman Water Meter, Ultrasonic Heat Meter manufacturer / supplier in China, offering DN80 Cast Iron Woltman Water Meter for Agricultural Irrigation Sewage Meter Class-B ISO4064, CE Certified DN80-2000 Large Diameter Industrial Agricultural Woltman Water Meter, ISO4064 DN15 Nylon Plastic Mechanical Multi Jet Class-B Water Meter and so on.