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 graphite.
General situation, the size of the graphite to 6 -
7, pipes for 1 - nodulizing grade requirements
Level 3 (
Spheroidization rate & ge;
As a result, the mechanical properties of the material itself better improved, with the essence of the iron and steel performance.
Annealing and a small amount of pearlite ductile cast iron pipe organization for ferrite, good mechanical properties.
Ductile iron pipes mainly referred to as the centrifugal ductile iron pipe.
It has the properties of the steel performance, good corrosion resistance, good ductility, good sealing effect, convenient installation, it is mainly used for municipal, industrial and mining enterprises, such as water, gas, oil is the first selection of cost-effective water supply pipe.
Compared with the PE pipe, ductile iron pipe installation time than PE pipe is simple, fast, after installation fluctuation pressure is better;
From the point of air tightness and corrosion, ductile pipe
after installation of sealing better, anticorrosion performance can through a variety of measures to improve;
In hydraulic performance, because of the specifications of the ductile iron pipes generally refers to the inner diameter, the specifications of the PE pipe generally refers to the outer diameter, in the case of the same specification, ductile pipe can achieve larger runoff;
From the point of comprehensive installation and maintenance cost, ductile pipe has more superior performance.
The lining of cement mortar spraying zinc.
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