北京离心球墨铸铁管的主要应用及性能特点作者: -1 发布时间: 2018-07-26 次浏览
Beijing centrifugal ductile iron pipe has replaced ordinary cast iron pipe, most of them are in municipal engineering and installation engineering, water supply, gas transmission and other pipelines.
Beijing centrifugal ductile iron pipe is a kind of pipe material produced by centrifugal casting. Widely used in metallurgy, mining, water conservancy, petroleum and urban utilities and other kinds of pipeline construction, can transport water, gas and other fluid media. It has the nature of iron, the performance of steel, high strength, good toughness and corrosion resistance. In addition, the centrifugal ductile iron pipe linear good, smooth surface, size accurate, uniform thickness, good mechanical performance, coating adhesion, T socket type flexible interface, integrated seal, convenient installation.
The strength of Beijing centrifugal ductile iron pipe is higher than that of ordinary cast iron pipe. Both ductile and ordinary cast iron contain graphite monomers, which means that cast iron is a mixture of iron and graphite. Graphite in ordinary cast iron is laminated, and its strength is very low, so it is equivalent to many lamellar gaps in cast iron, so the strength of ordinary cast iron is relatively low and brittle. Graphite in graphite cast iron is spheroidal, equivalent to many globular voids in cast iron. The effect of spherical void on the strength of cast iron is much smaller than that of sheet iron, so the strength of ductile iron is much higher than that of ordinary cast iron. Ductile iron pipes of high strength are naturally more popular.
Beijing centrifugal ductile iron pipe is the most common water supply pipe in the world, and can also be used in petroleum, electric power, mining and chemical industry. Beijing centrifugal ductile iron pipe with ordinary gray iron corrosion resistance and the strength and toughness of steel tube, the weight lighter than with the diameter of the gray iron tube 1/3-1/2, closer to the pole, but its corrosion resistance is several times or even more than ten times higher than steel pipe, so in all kinds of environment, Beijing centrifugal ductile iron pipe don't have to do special anticorrosive processing. The strength of Beijing's centrifugal ductile iron pipe is strong enough to withstand complex external loads, including road loads, far greater than those of gray iron pipes, cement pipes, glass pipes and plastic pipes. The roughness coefficient of the polished cement lining is low and the resistance to fluid is low, which is comparable to that of glass tube and plastic tube.