Cast iron pump will be replaced by stainless steel centrifugal pump?

Cast iron and stainless steel are two main raw materials for the manufacture of centrifugal pumps, relative, stainless steel centrifugal pump has obvious advantages of environmental protection, the future of stainless steel centrifugal pump to replace the cast iron pump may be relatively large.
Stainless steel multi-stage centrifugal pump and stainless steel single stage centrifugal pump are widely used in the chemical industry system. It has a wide range of performance (including flow, pressure head and the nature of the transmission medium), small size, simple structure, easy operation, low operating costs, no rust, and many other advantages.
The development time of stainless steel centrifugal pump later than cast iron pump, the pump is a big energy consumption, according to estimates of electricity generation 20% is consumed by the pump, the pump efficiency to improve energy efficiency will be extremely important. The Ministry of finance subsidies or will accelerate the replacement process of stainless steel cast iron pump, stainless steel centrifugal pump made of stainless steel plate stamping molding, the channel is very smooth, can avoid the water quality of the "two pollution", the hydraulic efficiency (higher than similar cast iron pumps about 10% ~ 20% power) to replace the cast iron pump is represent the general trend. However, the cost of the acquisition of stainless steel pump than 30% ~ 20% of the cast iron pump, at present in the eastern part of China's three or four cities and the central and western regions are relatively small, there is a large alternative space. The Ministry of finance will have the energy saving effect of the pump into the scope of subsidies, or to speed up the process of replacing the cast iron pump.