Nodular cast iron steel pipes are essentially ductile iron pipes, which have the essence of iron and the properties of steel, hence their name. Graphite in ductile iron pipes exists in a spherical form, with a general size of 6-7 grades. In terms of quality, the spheroidization level of cast iron pipes is required to be controlled at 1-3 levels, with a spheroidization rate of ≥ 80%. Therefore, the mechanical properties of the material itself have been improved, possessing the essence of iron and the properties of steel. After annealing, the microstructure of ductile iron pipes is ferrite with a small amount of pearlite, which has good mechanical properties, hence it is also called cast iron steel pipes.Ductile iron pipes are available in a range of diameters from 80mm to 1600mm and are suitable for both potable water transmission and distribution (in accordance with BS EN 545) and sewerage (in accordance with BS EN 598).Ductile iron pipes are simple to joint, can be laid in all weather conditions and often without the need for selected backfill. Its high safety factor and ability to accommodate ground movement make it the ideal pipeline material for a wide range of applications.1.How can I get a quotation from you ? You can leave us message, and we will reply every message in time. 2.Will you delivery the goods on time? Yes,we promise to provide best quality products and delivery on time. Honesty is our company's tenet. 3.Can I get samples before order ? Yes, of course. Usually our samples are free,we can produce by your samples or technical drawings. 4.What is your payment terms? Our usual payment term is 30% deposit, and rest against B/L. EXW, FOB,CFR, CIF. 5.Do you accept the third party inspection? Yes absolutely we accept. 6.How do we trust your company? We specialise in steel business for years as golden supplier, headquarter locates in Tianjin province, welcome to investigate in any ways, by all means.Ductile iron pipe is a type of cast iron pipe. In terms of quality, the spheroidization level of cast iron pipes is required to be controlled at 1-3 levels (spheroidization rate>80%), thus improving the mechanical properties of the material itself, possessing the essence of iron and the properties of steel. The annealed ductile iron pipe has a metallographic structure of ferrite with a small amount of pearlite, which has good mechanical properties, excellent anti-corrosion performance, good ductility, good sealing effect, easy installation, and is mainly used for water supply, gas transmission, oil transportation, etc. in municipal and industrial enterprises. There is a certain amount of spherical graphite distributed on the matrix of ferrite and pearlite. Depending on the nominal diameter and requirements for elongation, the proportion of ferrite and pearlite in the matrix structure varies. The proportion of pearlite in small diameters is generally not more than 20%, while that in large diameters is generally controlled at around 25%.
All specifications products can be customized according to customer requirements
1.The performance of internal pressure resistance: Centrifugal ductile iron has the essence of iron and the performance of steel,so the ductile iron pipes have excellent security performance than pipes made from other materials. The designed working pressure is much higher than that of pipes made from other materials, the safty factor is pretty high, and the possible burst pressure is three times of the working pressure. 2.The performance of outer pressure resistance: The high pressure resistance can avoid the requirement of the pipe bed and protective cover, making the pipes laying rellable and economic. 3.Inner anti-corrosion layer: The inner layer of ductile iron pipes are centrifugally sprayed with cement mortar. Cement lining complies with the international standard ISO4179, ensuring the mortar strong and smooth. The motor coating will not fall off or foul, and its thickness is even ensuring the drinking water transferred by the pipes get good protection. 4.Protective coating: The zinc spraying of ductile iron pipes could protect the pipes proactively through the electrochemical effect of zinc and iron. With the high chiorinated resin paint, the pipes will get enhanced anti-corrosion protection. The surface zinc spraying of each pipe is not less than 130g/m², and complies with ISO8179 standard. We can also increase the zinc spraying thickness or spray zinc & aluminum alloy layer according to the customers' demand.
1.How can I get a quotation from you ? You can leave us message, and we will reply every message in time. 2.Will you delivery the goods on time? Yes,we promise to provide best quality products and delivery on time. Honesty is our company's tenet. 3.Can I get samples before order ? Yes, of course. Usually our samples are free,we can produce by your samples or technical drawings. 4.What is your payment terms? Our usual payment term is 30% deposit, and rest against B/L. EXW, FOB,CFR, CIF. 5.Do you accept the third party inspection? Yes absolutely we accept. 6.How do we trust your company? We specialise in steel business for years as golden supplier, headquarter locates in Tianjin province, welcome to investigate in any ways, by all means.Ductile iron pipe is a type of cast iron pipe. In terms of quality, the spheroidization level of cast iron pipes is required to be controlled at 1-3 levels (spheroidization rate>80%), thus improving the mechanical properties of the material itself, possessing the essence of iron and the properties of steel. The annealed ductile iron pipe has a metallographic structure of ferrite with a small amount of pearlite, which has good mechanical properties, excellent anti-corrosion performance, good ductility, good sealing effect, easy installation, and is mainly used for water supply, gas transmission, oil transportation, etc. in municipal and industrial enterprises. There is a certain amount of spherical graphite distributed on the matrix of ferrite and pearlite. Depending on the nominal diameter and requirements for elongation, the proportion of ferrite and pearlite in the matrix structure varies. The proportion of pearlite in small diameters is generally not more than 20%, while that in large diameters is generally controlled at around 25%.
