DUCTILE IRON PIPE DN250 K8/C/K9 System 1

DUCTILE IRON PIPE DN250 K8/C/K9 System 2

DUCTILE IRON PIPE DN250 K8/C/K9

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 20 m.t.

Supply Capability:: -

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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

Our main material are all carbon steel and alloy steel ,such as :aisi1020 1035 1045 1055 s20c s35c s45c s55c ss400 a36 c20 c35 c45 ck45 aisi4140/scm440 aisi4340/40crnimoa aisi8620H,40cr,gcr15,sae52100,20Mn,40Mn,St52,St37,S235JR,etc

Q:What is the minimum cover requirement for ductile iron pipes?: The minimum cover requirement for ductile iron pipes is typically specified by industry standards and local regulations, but it generally ranges from 2 to 5 feet depending on the pipe diameter and location.

Q:Are ductile iron pipes suitable for use in acidic environments?: Highly acidic environments are generally unsuitable for the use of ductile iron pipes. While ductile iron is recognized for its strength and durability, it does have limitations in acidic conditions. Over time, acidic environments tend to corrode and deteriorate ductile iron pipes. Corrosion occurs when the acid in the environment reacts with the iron in the pipe, eventually leading to pipe failure. The rate at which corrosion occurs depends on several factors, including the concentration and type of acid, temperature, and duration of exposure. Acidic environments with pH levels below 4 or 5 can significantly accelerate the corrosion process. To address this limitation, alternative materials such as stainless steel or corrosion-resistant alloys like PVC or HDPE pipes are often recommended for use in acidic environments. These materials exhibit superior resistance to corrosion and can withstand the harsh conditions associated with acidic environments. However, it is worth noting that ductile iron pipes may still be suitable for use in mildly acidic conditions or if protective measures are implemented to prevent corrosion. The application of protective coatings or linings to the pipes can help minimize the corrosive effects of acids. Consulting experts or engineers who are knowledgeable about the specific conditions and requirements of the project is crucial in determining the most appropriate material for use in acidic environments.

Q:How do ductile iron pipes perform in freeze-thaw cycles?: Ductile iron pipes perform exceptionally well in freeze-thaw cycles. The material properties of ductile iron, such as its high tensile strength and excellent impact resistance, make it highly resistant to the stresses caused by freeze-thaw cycles. Unlike other materials, ductile iron pipes can withstand the expansion and contraction that occurs during freezing and thawing without cracking or breaking. One of the key reasons why ductile iron pipes excel in freeze-thaw conditions is their ability to absorb and dissipate stresses. The high ductility of the material allows it to deform slightly under stress, thereby releasing the built-up pressure and preventing any damage to the pipe. This characteristic ensures that the pipes can handle the repeated cycles of freezing and thawing without compromising their structural integrity. Additionally, ductile iron pipes have a protective and durable coating, such as cement mortar lining or polyethylene encasement, which further enhances their resistance to freeze-thaw cycles. These coatings provide an additional layer of protection and prevent water from coming into direct contact with the iron, reducing the potential for corrosion. Furthermore, ductile iron pipes have a long service life, typically exceeding 100 years. This longevity is attributed to the material's inherent strength and resistance to various environmental factors, including freeze-thaw cycles. The pipes' ability to withstand these cycles without significant damage ensures the reliability and durability of the water distribution system, even in areas prone to freezing temperatures. In conclusion, ductile iron pipes are highly reliable and perform exceptionally well in freeze-thaw cycles. Their high tensile strength, impact resistance, ability to absorb stresses, and protective coatings make them a preferred choice for water distribution systems in regions with harsh winter conditions.

Q:The difference between ductile cast iron pipe and machine-made cast iron pipe: Production process is different, ductile iron pipe mainly through intermediate frequency furnace heating, annealing, and then do cement lining cement lining production, the mechanism of cast iron pipe does not make cement lining.

Q:The difference between cast iron pipe and ductile iron pipe: I don't understand your question! Both have spigot and socket connection type pipe material, also have flange,

Q:How does ductile iron pipe handle ground movement and settlement?: Ductile iron pipe is known for its excellent ability to handle ground movement and settlement. Due to its inherent strength and flexibility, it can withstand significant ground shifts without experiencing major damage or failure. One of the key features of ductile iron pipe is its high tensile strength, which allows it to withstand external forces and pressures. This strength enables the pipe to resist the effects of ground movement, such as soil settlement, subsidence, or shifting due to seismic activity. Moreover, ductile iron pipe has inherent flexibility, which allows it to absorb and distribute stress caused by ground movement. The pipe's flexibility helps to minimize the impact of settlement by allowing it to adjust and adapt to changes in the surrounding soil. This characteristic helps prevent the pipe from cracking, breaking, or leaking when the ground shifts or settles. Additionally, ductile iron pipes are often installed with flexible joints, such as push-on or mechanical joints, which further enhance their ability to accommodate ground movement. These joints provide a degree of flexibility and movement, allowing the pipe to adjust to changes in the soil without experiencing stress concentrations or structural failure. Furthermore, ductile iron pipe is highly resistant to corrosion, which is another important factor in its ability to handle ground movement and settlement. Corrosion can weaken pipes and make them more susceptible to damage during ground shifts. However, the corrosion-resistant properties of ductile iron help maintain the pipe's structural integrity and durability, even in challenging soil conditions. In summary, ductile iron pipe is well-suited to handle ground movement and settlement due to its high tensile strength, flexibility, and corrosion resistance. These properties allow the pipe to withstand external forces and adapt to changes in the surrounding soil, minimizing the risk of damage, leaks, or failure.

Q:Are ductile iron pipes suitable for horizontal auger boring installations?: Yes, ductile iron pipes are suitable for horizontal auger boring installations. Ductile iron pipes are known for their strength and durability, making them a reliable choice for various installation methods, including horizontal auger boring. This method involves drilling a horizontal hole underground and then pulling the pipe through the hole. Ductile iron pipes can withstand the forces involved in this process and maintain their structural integrity. Additionally, ductile iron pipes have high resistance to corrosion, which is crucial for underground installations where they may be exposed to moisture and other potentially damaging elements. Overall, ductile iron pipes are a suitable and widely used option for horizontal auger boring installations.

Q:Is the fire hose capable of using rapid repair joints?: Lubrication. Edible oil can be used as lubricant and evenly brush on the socket end and rubber ring.

Q:Can ductile iron pipes be used for water main extensions?: Yes, ductile iron pipes can be used for water main extensions. Ductile iron pipes are known for their strength and durability, making them a suitable choice for water main extensions. They can handle high pressure and provide resistance to corrosion, which is important for ensuring the longevity and reliability of the water distribution system. Additionally, ductile iron pipes have a smooth interior surface, reducing friction and improving water flow efficiency. Overall, ductile iron pipes are commonly used in water infrastructure projects, including water main extensions, due to their favorable mechanical properties and ability to withstand the demands of water distribution systems.

Q:Principles for the antiseptic treatment of ductile iron pipes: 4. epoxy ceramic liningEpoxy ceramic lining is suitable for sewage pipes and gas pipelines, but because of its difficult manufacturing process and high cost, it has some limitations in its use. Epoxy ceramic lining has a high adhesion and finish. It is an excellent anti-corrosion coating.5. aluminate cement coating or sulphate cement coatingThese two special cement coatings are suitable for internal corrosion protection of nodular iron pipes used in sewage pipes to improve the corrosion resistance of acid and alkali components in sewage.

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