Ductile iron pipe manufacturer - ductile iron pipe water supply - ductile iron pipe fittings

  Nodular cast iron pipe refers to the pipe made by high-speed centrifugal casting with centrifugal nodular cast iron machine after using cast iron above No
18 and adding spheroidizing agent
It is referred to as nodular pipe, nodular iron pipe and nodular cast pipe for short
It is mainly used for the transportation of tap water and is an ideal material for tap water pipeline

The essence of cast iron steel pipe is nodular cast iron pipe
Because nodular cast iron pipe has the essence of iron and the performance of steel, it is called this method
Graphite in nodular cast iron pipe exists in spherical form
Generally, the size of graphite is grade 6-7
In terms of quality, the spheroidization grade of cast iron pipe is controlled as Grade 1-3, and the spheroidization rate is ≥ 80%, so the mechanical properties of the material itself have been better improved, with the essence of iron and the properties of steel
The annealed ductile iron pipe is also called cast iron pipe because its metallographic structure is ferrite plus a small amount of pearlite and good mechanical properties
Features: it has the essence of iron, steel performance, excellent anti-corrosion performance, good ductility and easy installation
It is mainly used for water supply and gas transmission in Municipal Industrial and mining enterprises
Ductile iron pipe is a kind of cast iron pipe
In terms of quality, the spheroidization grade of cast iron pipe is controlled as Grade 1-3 (spheroidization rate "80%), so the mechanical properties of the material itself have been better improved, which has the essence of iron and the properties of steel
The metallographic structure of annealed ductile iron pipe is ferrite plus a small amount of pearlite
It has good mechanical properties, excellent corrosion resistance, good ductility, good sealing effect and simple installation
It is mainly used for water supply, gas transmission and oil transportation in municipal and industrial and mining enterprises
A certain amount of spherical graphite is distributed on the ferrite and pearlite matrix
According to the nominal diameter and the requirements for elongation, the proportion of ferrite and pearlite in the matrix structure is different
The proportion of pearlite with small diameter is generally no more than 20%, and that with large diameter is generally controlled at about 25%

Ductile iron pipe is a kind of cast iron, which is an alloy of iron, carbon and silicon
Graphite in nodular cast iron exists in spherical form
Generally, the size of graphite is grade 6-7
In terms of quality, the spheroidization grade of cast pipe is required to be controlled as Grade 1-3 (spheroidization rate & Ge; 80%), so the mechanical properties of the material itself have been better improved, which has the essence of iron and the properties of steel
The microstructure of annealed ductile iron pipe is ferrite with a small amount of pearlite, and the mechanical properties are good
Nodular cast iron pipe is mainly called centrifugal nodular cast iron pipe
It has the essence of iron and the performance of steel
It has excellent anti-corrosion performance, good ductility, good sealing effect and simple installation
It is mainly used for water supply, gas transmission and oil transportation in municipal and industrial and mining enterprises
It is the first choice of water supply pipes with high cost performance
Compared with PE pipes, the installation time of nodular graphite pipes is simpler and faster than that of PE pipes, and the internal and external bearing pressure is better after installation; From the perspective of tightness and corrosion resistance, the tightness of nodular graphite pipe after installation is better, and the anti-corrosion performance can also be improved through a variety of anti-corrosion means; From the perspective of hydraulic performance, the specification of ductile iron pipe generally refers to the inner diameter, and the specification of PE pipe generally refers to the outer diameter, because under the condition of the same specification, the ductile iron pipe can achieve greater runoff; From the perspective of comprehensive installation and maintenance cost, the ductile iron pipe has a better cost performance
The inner wall is sprayed with zinc, cement mortar, anti-corrosion materials, etc