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A "4x4 centrifugal pump china type" most likely refers to a 4-inch by 4-inch diesel-powered water pump of Chinese manufacture, commonly used for agricultural irrigation or dewatering. This type of pump is widely available from various Chinese factories and suppliers.
Key characteristics
Dimensions: The "4x4" describes the inlet and outlet ports, which are 4 inches in diameter.
Engine: Many pumps of this type are powered by a 4-stroke diesel engine. Manufacturers often offer options for different engine sizes and brands.
Application: These are general-purpose, high-flow pumps suited for moving large volumes of water for tasks such as:
Agricultural irrigation
Draining flooded areas
General water transfer and supply
Materials: