The performance of the ductile iron pipes

by:XEX     2020-12-01
Ductile iron pipes are excellent performance, ductile iron pipe mechanical properties is higher than welding steel pipe. It is able to bear high pressure, convenient construction, inspection and assurance. At the same time, the corrosion resistance of the nodular cast iron pipe is higher than the welding steel pipe, buried service life is more than twice. Thus, rare-earth nodular cast iron pipe is a necessary condition to ensure the quality of water potential. Ductile iron pipe is out of rare earth elements, such as in the raw material of hot molten iron to obtain purified, make molten iron on the ink at the same time, improve compressive strength of the cast iron pipe, hardness, plasticity and elongation, compression and impact resistance can be improve the quality of the cast iron pipe, ensure it in a tougher environment in use, is generally several times the service life of grey cast iron pipe. Ductile iron pipes in the spherical graphite, graphite particle size is 6 - 7. In terms of quality, it is recommended that the cast iron pipe nodulizing grade control in 1 - Level 3, spheroidization rate & ge; 80%. Stainless steel pipe is the essence of ductile iron pipes, with the improvement of the performance of the nature of the iron and steel, the mechanical properties of the material itself bad improvement were obtained. Annealing microstructure of nodular cast iron pipe for ferrite and a small amount of pearlite. It has good mechanical properties, so also known as cast iron pipe.
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