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 maximum pressure rating for ductile iron pipe?: The maximum pressure rating for ductile iron pipe typically ranges from 350 to 500 psi, depending on the diameter and wall thickness of the pipe. However, it is always recommended to consult the manufacturer's specifications for accurate and specific pressure ratings.

Q: Can ductile iron pipes be used in potable water systems?: Yes, ductile iron pipes can be used in potable water systems. Ductile iron is a suitable material for water distribution systems as it has excellent durability, strength, and corrosion resistance. It is commonly used in potable water systems due to its ability to withstand high water pressure and its long service life. Additionally, ductile iron pipes are also approved by various national and international standards for use in potable water applications.

Q: What is the cost of ductile iron pipes compared to other materials?: Several factors, such as size, length, and application, can cause the cost of ductile iron pipes to vary when compared to other materials. Generally, ductile iron pipes are more expensive than PVC or HDPE pipes due to their superior strength, durability, and longevity. Although the initial cost of ductile iron pipes may be higher, they offer a cost-effective solution in the long term because of their extended lifespan. With a life expectancy of over 100 years, ductile iron pipes are reliable and require minimal maintenance for water, sewage, and gas distribution systems. This longevity reduces the need for frequent replacements, repairs, and associated expenses. Additionally, ductile iron pipes are known for their exceptional resistance to external loads, pressure, and corrosion, making them suitable for various applications, including high-pressure water and gas transmission, industrial pipelines, and sewer systems. The inherent strength of ductile iron pipes allows for thinner walls, resulting in reduced material and installation costs compared to other materials. It is important to consider that the cost of ductile iron pipes can also be influenced by market conditions, transportation costs, and the availability of raw materials. Therefore, it is advisable to consult with suppliers and conduct a cost-benefit analysis before making a decision.

Q: Can ductile iron pipe be used for hot water applications?: Indeed, hot water applications can make use of ductile iron pipe. Renowned for its robustness, longevity, and exceptional resistance to corrosion, ductile iron pipe proves itself ideal for diverse applications, including hot water systems. Its capability to withstand high temperatures and pressure renders it a dependable choice for the conveyance of hot water. Moreover, its thermal conductivity properties facilitate efficient heat transfer, guaranteeing the effective delivery of hot water throughout the system. Consequently, when evaluating materials for hot water applications, ductile iron pipe emerges as a fitting alternative.

Q: How are ductile iron pipes protected against freeze-thaw cycles?: Ductile iron pipes are protected against freeze-thaw cycles through several measures. Firstly, the material used in ductile iron pipes is inherently resistant to low temperatures and can withstand freezing conditions without becoming brittle or prone to cracking. Additionally, the pipes are often coated with a protective layer, such as cement mortar lining or polyethylene encasement, to provide an extra barrier against freeze-thaw damage. These coatings serve to insulate the pipe and prevent direct contact between the iron and the surrounding environment. Furthermore, ductile iron pipes are commonly designed with joints that allow for movement and flexibility, which helps to accommodate any expansion or contraction that may occur during freeze-thaw cycles. This flexibility reduces the risk of pipe breakage or damage due to the pressure exerted by freezing water inside the pipe. Moreover, proper installation practices, including adequate bedding and backfilling, are crucial in protecting ductile iron pipes against freeze-thaw cycles. Ensuring that the pipes are properly supported and surrounded by suitable materials helps to minimize the impact of freezing temperatures on the structural integrity of the pipes. Regular inspection and maintenance of ductile iron pipes are also essential in identifying any potential issues caused by freeze-thaw cycles. Periodic assessments can help detect any signs of damage or deterioration, enabling timely repairs or replacement to prevent further damage. In summary, ductile iron pipes are protected against freeze-thaw cycles through the inherent resistance of the material, protective coatings, flexible joints, proper installation practices, and regular maintenance. These measures collectively contribute to the durability and longevity of ductile iron pipes, even in cold weather conditions.

Q: What is the K9 standard pressure for ductile iron pipes?: The annealed ductile iron pipe is composed of ferrite and pearlite. The mechanical properties of the ductile iron pipe are better. Ductile iron pipes mainly called centrifugal ductile iron pipe, it has the properties of nature, iron and steel, excellent corrosion resistance, good ductility, good sealing effect, simple installation, mainly for municipal, industrial and mining enterprises, water supply, gas, oil etc.. Water supply pipe is the first choice, with high cost performance. Compared with the PE pipe, from the installation time, ductile pipe PE pipe installation is simple and rapid, and after the installation of internal and external pressure bearing better tightness and corrosion resistance; from the point of view, ductile pipe sealing better after installation, but also can improve the corrosion resistance of corrosion protection through a variety of means; from the hydraulic performance, because ductile pipe specifications generally refers to the inner diameter of PE pipe diameter specifications generally refers to the same specifications, because under the condition of ductile pipe can achieve greater runoff; from the installation and maintenance cost, ductile pipe have more favorable price. The main components of ductile iron pipes are carbon, silicon, manganese, sulfur, phosphorus and magnesium. The inner wall of zinc spray, anti-corrosion materials such as cement mortar.

Q: Can ductile iron pipes be used for wastewater pumping stations?: Yes, ductile iron pipes can be used for wastewater pumping stations. Ductile iron pipes have excellent strength and durability, making them suitable for transporting wastewater and handling the high pressures and corrosive nature of the sewage. Additionally, ductile iron pipes have a smooth interior surface, which prevents clogs and allows for efficient flow of wastewater. These pipes are also resistant to damage from external factors such as soil movement or heavy traffic, making them a reliable choice for wastewater pumping stations.

Q: There are several forms of flexible interfaces for Spigot Cast Iron Pipes: At present, the flexible interfaces include slip type rubber ring interface, R rubber ring interface, flexible mechanical interface, A type and flexible mechanical interface, K type.1. slip in rubber ring interfaceRubber ring and pipe are supplied by supply factory. A rubber ring is installed before the socket in the working surface and no tower water supply equipment Jack working surface cleaned, the rubber ring embedded concave socket tip in the rubber ring, and the exposed surface and the socket of the working face, coated with lubricant has no influence on the quality of the rubber ring. The water supply equipment socket end chamfering and rubber ring even after contact with special tool socket socket will push, push people to mark depth should be set in advance, before the festival, before the two push interface depth and review has been.

Q: What are the interface forms of ductile iron pipes? The best drawings are available. Thank you: There are many kinds of ductile iron pipe interfaces, and the T type interface (sliding type) flexible interface is famous for its fast installation and simple installation.

Q: How can the ductile iron pipe be welded?: If the hole on the ductile iron pipe, you can use special hoop lined flexible rubber ring, rubber ring and pipe wall coating with rubber ring, glue to be fixed.

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