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The application of ductile iron pipe fittings in water transport!

by:XEX     2020-12-13
The sea itself contains high concentration of salt is highly corrosive, generally with the ordinary iron pipe drainage systems are difficult to achieve a goal, so, we need to find a kind of high strength and corrosion resistance of steel tubes. Ductile iron pipes it is combined with magnesium and rare earth magnesium golden, agents to join before pouring molten iron, the graphite spheroidizing, stress concentration is reduced, the pipe with iron essence, the performance of the steel strength, high elongation and impact resistance, corrosion resistance, good sealing, etc; Use cement mortar lining, improve the water environment, improve the ability of water supply pipeline, reduce the energy consumption; Nozzle adopt flexible interface and nodular cast iron pipe fittings itself has a larger elongation (> 10%) , so that the pipe has good flexibility, in buried pipeline and soil around the pipeline work, improve the stress of pipeline, so as to improve the reliability of the network operation. Ductile iron pipe fittings average diameter, wall thickness, normal use life can be up to 50 years. Therefore, the water supply industry in our country usually adopt nodular cast iron pipe material as a supervisor. Seawater desalination is to realize the water resource utilization of open source incremental technology, can effectively alleviate the shortage of fresh water resources condition. Desalination and water chemical stability difference is bigger, will be different influence on the water pipe, which could lead to network the secondary pollution of water. Ductile iron pipes in the process of conveying desalination in anti-corrosion coating and the choice of interface, to ensure the security of the desalination in nodular cast iron pipe conveyor has a certain practical significance. Use 'power - Desalination - Strong sea salt - Land saving and consolidation -- Waste resource recycling 'model, USES waste heat power generation, using low temperature multiple effect desalination. Production process Desalination project has the following characteristics: (1) pipe water temperature between 22 ~ 45 ℃; (2) a greater difference between desalination and water quality of tap water, belong to the aggressive water transfer (3) desalination using ductile iron pipe, water pipe line length ( All about 54 km) And the larger diameter ( To DN1000, 48 '), mainly DN1400 diameter) 。
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