DUCTILE IRON PIPE DN450 K8/C/K9 System 1

DUCTILE IRON PIPE DN450 K8/C/K9

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Payment Terms:: TT OR LC

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Specification:

1) The standard of pipe: ISO2531:1998, K9

2) Effective length: 6m

3) Inner cement line: Portland cement line as per ISO4179

4) Zinc coating: at least 130g/m² as per ISO8179

5) Bitumen painting: at least 70um as per ISO8179

6) With 100% quantity of NBR ring, or SBR ring, or EPDM ring as per ISO4633

7) DN80mm-800mm

8) High strength, lighter than grey iron, good corrosion resistance, no furring, small flow resistance, easy fixing, long life tome about 100 yeas

9) Produced by Hangzhou chunfeng machine

10) Checked by automatic inspection equipment

11) Composition:

Chemical composition
Chemical composition	Ductile Cast Iron Pipe (%)	Grey iron pipe (%)	Steel pipe (%)
C	3.5-4.0	3.2-3.8	0.1-0.2
Si	1.9-2.6	1.4-2.2	0.15-0.4
Mn	0.15-0.45	0.4-0.6	0.3-0.6
P	≤0.06	≤0.3	0.02-0.03
S	≤0.02	≤0.1	0.02-0.03
Mg	0.03-0.06

12) Feature:

Mechanical properties
	Ductile Cast Iron Pipe	Grey Iron Pipe	Steel Pipe
Tensile Strength(Mpa)	≥420	150-260	≥400
Yield Strength(Mpa)	≥300	No Confirmation	No Confirmation
Bending Strength(Mpa)	≥590	200-360	≥400
Elongation (%)	≥10	Neglected	≥18
Brinell Hardness(HBS)	≤230	≤230	About 140

13) T type mechanical joint

14) Packing: in bulk or container

Q: It's not easy to drill ductile iron with cobalt high speed steel bit. Please help to point it out: The material can be annealed and the process is simple, that is, heating the workpiece and cooling it naturally. In this way, the hardness of the workpiece can be reduced.

Q: Are ductile iron pipes suitable for mining applications?: Yes, ductile iron pipes are suitable for mining applications. Ductile iron pipes are known for their strength, durability, and resistance to corrosion, making them ideal for underground mining operations. They can withstand high pressure, heavy loads, and abrasive materials commonly found in mining environments. Additionally, their flexible nature allows for easy installation and maintenance in challenging mining conditions.

Q: Do ductile iron pipes require concrete encasement for support?: Yes, ductile iron pipes typically require concrete encasement for support. Concrete encasement provides additional stability and strength to the pipes, preventing them from shifting or collapsing under pressure. It helps distribute the load evenly along the length of the pipe and protects it from external forces such as soil movement or heavy vehicle traffic. Concrete encasement also helps to minimize the risk of damage due to corrosion or external impacts, ensuring the longevity and durability of the ductile iron pipes.

Q: What is the relationship between the direction of the spigot and the direction of the flow in the ductile iron pipe?: Use more than 18 casting molten iron, by adding the spheroidizing agent, through the centrifugal ductile iron machine high-speed centrifugal casting pipe

Q: What is the expected hoop stress capacity of ductile iron pipes?: The expected hoop stress capacity of ductile iron pipes can vary depending on various factors such as the pipe's diameter, wall thickness, and material grade. However, in general, ductile iron pipes have a high level of strength and durability, making them capable of withstanding significant hoop stress. Ductile iron pipes are designed and manufactured to meet specific standards and requirements, such as the American Water Works Association (AWWA) C151 and C115 standards. These standards ensure that the pipes have sufficient strength to handle the anticipated loads and pressures they may encounter during their service life. The hoop stress capacity of ductile iron pipes is primarily determined by their tensile strength. Ductile iron is a type of cast iron that has been treated to exhibit ductility, meaning it can withstand tensile stress without fracturing. This property makes it suitable for applications where the pipes may experience internal or external pressure, such as water distribution systems or sewer lines. To determine the expected hoop stress capacity, engineers typically perform calculations based on the specific pipe dimensions, material properties, and the expected operating conditions. These calculations consider factors such as the internal pressure, external loads, and the safety factors required by the applicable design standards. It is important to note that the expected hoop stress capacity of ductile iron pipes should always be verified using the manufacturer's specifications and engineering calculations. Additionally, any modifications or repairs to the pipes should be performed by qualified professionals in accordance with industry guidelines to ensure their continued strength and performance.

Q: Disadvantages of ductile iron pipes: In most municipal applications, such as water, brine, steam, ductile iron has more corrosion resistance and oxidation resistance than cast steel. Because of the spheroidal graphite microstructure of nodular cast iron, nodular cast iron is superior to cast steel in reducing vibration ability, so it is more beneficial to reduce stress. An important reason for choosing ductile iron is that ductile iron costs less than cast steel.

Q: What does ductile iron pipe "ND200" mean?: The nominal pipe diameter and the inner diameter and the outer diameter were not equal, for example: the nominal diameter of 100MM seamless steel pipe 102*5, 108*5 several, 108 for the outer diameter of pipes, 5 said that the wall thickness of the tube, therefore, the pipe diameter (108-5-5 = 98MM), but it is not completely equal to pipe diameter minus two times the wall thickness difference, it can be said that the nominal diameter is close to the diameter, but not equal to the diameter of a pipe diameter specifications on the design drawings, so we use the nominal diameter, the purpose is to determine according to the nominal diameter pipe, flange and gasket structure and size connecting dimensions, nominal diameter is represented by the symbol DN, if the diameter of said in the design drawings, piping specifications should also make the table, show that the nominal diameter of a pipe wall thickness.

Q: Method for cutting large diameter ductile iron pipe: When the oxygen and acetylene volume ratio is greater than 1.2, is formed. As more oxygen, burning, the flame length is shortened obviously, cone tapered inner flame almost disappeared, and a strong desire. Making due to oxygen, the oxidation of metal, so are not widely used, only used for welding of brass, to prevent evaporation of zinc.

Q: Advantages and disadvantages of ductile iron pipes?: Ductile iron pipes are mainly heated and annealed by intermediate frequency furnace, and then made as lining cement. The cast iron pipe is not made of lining cement.

Q: Can ductile iron pipes be used for firefighting systems?: Yes, ductile iron pipes can be used for firefighting systems. Ductile iron is a strong and durable material that can withstand high pressures and extreme temperatures, making it suitable for transporting water in firefighting systems. Its ability to resist corrosion and withstand external loads also ensures the long-term reliability and performance of the pipes. Additionally, ductile iron pipes have excellent fire resistance properties, as they do not burn, emit toxic fumes, or contribute to the spread of fire. Therefore, ductile iron pipes are a reliable and commonly used choice for firefighting systems due to their strength, durability, and fire resistance.

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