Characteristics - the centrifugal ductile cast iron pipes Company news -

by:XEX     2021-01-26
Centrifugal ductile cast iron pipes performance characteristics of centrifugal ductile cast iron pipe in the world has become so far on the pipe material of first choice, and is gradually promotion should use a gas pipeline system, the reason lies in the strength of the nodular cast iron pipe with steel pipe and the elongation, but corrosion resistance is more than twice that of steel pipe. Flexible interface can effectively vibration control effect. GB / T 13295 - 2008 water and gas pipeline with nodular cast iron pipe, ductile iron pipe fittings and accessories as a new type of pipe material, its good performance in: excellent mechanical performance, save the metal; Convenient construction, comprehensive construction cost economy, high reliability, corrosion resistance, safe water supply gas; Used for water supply pipeline, water supply network, pipeline network, gas pipeline networks, service life long ductile cast iron is a kind of iron, carbon and silicon alloy, which exist in spherical free graphite carbon. Gray cast iron, the flake graphite iron matrix 'lacerate' action. Make its brittleness. Nodular cast iron, spheroidal graphite eliminates the damage effect, make its tenacity. With iron, the nature of the performance of the steel. Ductile cast iron pipe with excellent mechanical properties and external quality, is the carrier of pipe water supply enterprise, its strong bearing capacity, reliable sealing performance, incomparable anticorrosive processing and quality assurance system, make the pipe water supply nearly perfect, even in the complex terrain of saline-alkali land, wetland, high pitched and desert balanced soil, also can complete the task of water supply well. Centrifugal ductile iron pipe has the tensile strength and the compression performance of steel tube, elongation rate is greatly increased, compared with their grey cast iron pipe, with good toughness; Not only overcome the shortcomings of the grey iron pipe is easy to break, but also avoids the steel tube under the pressure of large flexible type of unhealthy phenomenon. In this way, the centrifugal ductile cast iron pipe on the anti-seismic ability effect is remarkable, use fixed number of year also significantly prolong, 50 - In 70. Centrifugal ductile iron pipe has replaced the ordinary cast iron pipe, at present most meet in municipal engineering and installation engineering, water supply, gas transmission pipeline, etc. Centrifugal ductile iron pipe is produced by centrifugal casting process of a pipe material, material for nodular cast iron. It is widely used in metallurgy, mining, water conservancy, urban public construction of oil and a variety of pipeline engineering, conveying water, gas and other fluid medium. It has the nature of the iron, the performance of the steel, high strength, good toughness, corrosion resistance, is a traditional cast iron pipe and the upgrading of ordinary steel pipe products. In addition, the centrifugal ductile iron pipe linearity is good, smooth surface, size accurate, uniform thickness, good mechanical performance, coating adhesion is strong, the T type socket type flexible interface, synthetic sealing, convenient installation. Ductile iron pipes than ordinary cast iron pipe high strength ductile iron and ordinary cast iron containing graphite monomers, that is to say is a combination of iron and graphite cast iron. There is flake graphite of ordinary cast iron, the strength of the graphite is very low, so the equivalent of iron sheet, the gap in the so ordinary cast iron intensity is lower, brittle. The graphite graphite cast iron is spherical, is equivalent to cast iron ball in the gap. The influence of the strength of cast iron ball gap is far smaller than plate gap, so many ductile iron strength than ordinary cast iron with high intensity. High strength ductile iron pipes nature more popular. Centrifugal ductile iron pipe ( Hereinafter referred to as the ball iron pipe) Is currently the general water supply pipe material, can also be used in oil, electric power, mining and chemical etc. Ball of ordinary grey cast iron pipe with pipe corrosion resistance and strength and toughness of steel tube, its weight lighter than tube with diameter of ash to a third - — 1/2, closer to the steel tube, but its corrosion resistance is several times or even more than ten times higher than steel pipe, therefore under various environment, don't have to do special anticorrosive processing ball iron pipe. Strong enough to bear complex external load of ball iron pipe, including road load, it is grey iron pipe, cement pipe, glass pipe and plastic pipe is far less. After grinding of cement lining, roughness coefficient is low, the fluid resistance is small, that it can be equivalent to that of glass tube and plastic pipe. Xin, interface of ball iron pipe production adopts popular T slip type flexible interface, this interface, low cost, convenient installation, good sealing, pipeline working pressure can be up to 2 mpa. Because it is flexible connection, so the interface allows a certain Angle, allowing the whole pipeline bends, also can make the pipelines under uneven settlement, make the pipeline operation safety. Centrifugal ductile iron pipe diameter: DN80 - 1200 in accordance with ISO2531 standard GB/T13295 outside heat spraying zinc coating material of nodular cast iron lining cement asphalt spraying zinc layer is not less than 130 g/M2. Keyword: ductile iron pipes article source: http://www. hbtszz。 com/
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