The performance of the ductile iron pipes

by:XEX     2020-12-01
Ductile iron pipe is a kind of cast iron, is an alloy of iron, carbon and silicon. Graphite of nodular cast iron exists in the form of a sphere. Graphite particle size is 6 - commonly 1 - level 7, cast pipe's quality requirements Level 3 ( Spheroidization rate & ge; 80%) 。 So, as the nature of the nature of the iron and steel, the mechanical properties of the material itself is also improved. Annealing microstructure of nodular cast iron pipe for ferrite and a small amount of pearlite. Ductile iron pipes mainly referred to as the centrifugal ductile iron pipe. It is the nature of the iron and steel performance, excellent corrosion resistance, good ductility, good sealing effect, simple installation, it is mainly used for municipal, industrial and mining enterprises, water supply, gas, oil, etc. , is the first selection of cost-effective water supply pipeline. Compared with polyethylene pipe, ductile pipe installation time than polyethylene pipe is simple, fast, good installed inside and outside pressure; In terms of air tightness and corrosion resistance, good air tightness after ductile pipe installation, good corrosion resistance and can be improved through many kinds of anti-corrosion measures; From the point of hydraulic performance, ductile pipe specifications generally refers to the inner diameter, and the specifications of the polyethylene pipe is usually refers to the outer diameter, because under the same specification, spherical refill tube can achieve greater runoff, from the point of installation and maintenance cost, spherical refill tube has more superior performance. Wall, cement mortar anti-corrosion materials
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