Ductile,iron,pipe,amp,seamless business, insurance Ductile iron pipe & seamless steel pipe
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Different materialsDuctile iron pipe material is cast iron.Because the mechanical properties of cast iron is not high, take measures converting flake graphite in cast iron to spheroidal graphite can greatly improve the mechanical properties.To difference with the ordinary cast iron, name it ductile cast iron, and pipes for ductile iron pipes.Seamless steel pipe material is steel or alloy steel.Produce by the process of extrusion, rolling or pulling with steel embryo.For some of the difference between steel pipe is welded by steel crimped, said seamless steel tube.Ductile cast iron pipe material is ductile cast iron, cheap price, low intensity, and can only be used in the place of low pressure.Seamless steel pipe material is steel, it is seamless, high intensity, used in high pressure and harsh environment, and the price is very expensive. different manufacturing processDuctile iron pipes are generally sand casting molding; Seamless steel pipe is hot rolled by rolling mil with steel billet. CharacteristicsDuctile iron pipe is a kind of cast iron pipe.for the quality, nodulizing grade is required to be controlled between grade 1 and grade 3 (nodulizing rate of 80% or higher), so it can get better improvement on the mechanical properties of the material itself, has the nature of the iron and the performance of the steel.For the ductile cast iron pipe after annealing, the microstructure is ferrite and a small amount of pearlite with good mechanical properties.Ductile iron pipes are also called centrifugal ductile iron pipe, it has the performance of the essence of the iron and steel, anti-corrosive performance, good ductility, good sealing effect, easy to install, it is mainly used for municipal, industrial and mining enterprises, water supply, gas, oil, etc, is the first selection of water supply pipe, has the very high cost performance.In ferrite and pearlite matrix distribution has a certain number of nodular graphite, according to the requirement of the nominal diameter and elongation of different, the proportion of ferrite and pearlite in the matrix organization is different, small diameter of pearlite proportion is generally not more than 20%, the general control of large diameter is about 25%.
Ductile,iron,pipe,amp,seamless