Introduction of ductile iron pipe Slovenija

Introduction

The essence of cast iron steel pipe is ductile iron pipe. Because ductile iron pipe has the essence of iron and the performance of steel, it is called this. The graphite in ductile iron pipes exists in spherical form, and the size of graphite is generally grade 6-7. The quality requires that the spheroidization level of cast iron pipes be controlled to level 1-3, with a spheroidization rate of≥80%. Therefore, the mechanical properties of the material itself have been better improved, and it has the essence of iron and the properties of steel. After annealing, the metallographic structure of ductile iron pipe is ferrite plus a small amount of pearlite, and has good mechanical properties, so it is also called cast iron steel pipe.

Features: It has the nature of iron, the performance of steel, 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, etc.

Features

Ductile iron pipe is a type of cast iron pipe. Quality requires that the spheroidization level of cast iron pipes be controlled to level 1-3 (spheroidization rate > 80%). Therefore, the mechanical properties of the material itself

Ductile iron pipe finished product warehouse

Ductile iron pipe finished product warehouse

It can be better improved and has the essence of iron and the performance of steel. The annealed ductile iron pipe has a metallographic structure of ferrite plus a small amount of pearlite. It has good mechanical properties, excellent anti-corrosion properties, good ductility, good sealing effect, and is easy to install. It is mainly used for water supply and gas transmission in municipal, industrial and mining enterprises. , oil transportation, etc.

There is a certain amount of spherical graphite distributed on the ferrite and pearlite matrix. According to the nominal diameter and elongation requirements, the proportion of ferrite and pearlite in the matrix structure is different. The proportion of small diameter pearlite Generally no more than 20%, and large diameters are generally controlled at around 25%.

Mechanical properties

Minimum tensile strength: 420/Mpa

Minimum yield strength: 300/Mpa, minimum elongation 7%

Standard: GB/T13295-2013, ISO2531-2009

Caliber:DN80-DN2600

performance

Ductile iron pipe is a type of cast iron, an alloy of iron, carbon and silicon. Graphite in ductile iron exists in the form of spheroids. Generally, the size of graphite is grade 6-7. The quality requires that the spheroidization level of the cast pipe be controlled to grade 1-3 (spheroidization rate≥80%). Therefore, the mechanical properties of the material itself The performance has been better improved, with the essence of iron and the performance of steel. The metallographic structure of the ductile iron pipe after annealing is ferrite plus a small amount of pearlite, and has good mechanical properties.

Ductile iron pipe is mainly called centrifugal ductile 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 is easy to install. It is mainly used for water supply, gas transmission, and transportation in municipal, industrial and mining enterprises. Oil etc. It is the first choice for water supply pipes and has a high cost performance. Compared with PE pipes, ductile graphite pipes are simpler and faster to install than PE pipes in terms of installation time, and have better internal and external pressure bearing after installation; from the perspective of airtightness and anti-corrosion, ductile graphite pipes have better airtightness after installation, and are also The anti-corrosion performance can be improved through a variety of anti-corrosion methods; from the perspective of hydraulic performance, the specifications of ductile graphite pipes generally refer to the inner diameter, and the specifications of PE pipes generally refer to the outer diameter, because under the same specifications, ductile graphite pipes can achieve greater runoff; from In terms of comprehensive installation and maintenance costs, ductile graphite pipes have a more superior cost performance. The inner wall is sprayed with zinc, cement mortar anti-corrosion materials, etc.