DUCTILE IRON PIPE DN300 K9

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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

Product Introduction

CNBM ductile cast iron pipe ranges from DN80-DN1600mm (Tyton, T-Type, Class K7/K8/K9), effective length: 6m, complying with ISO2531and EN545 standards.

Specification& Payment terms

Internal lining: Pipes shall have an internal cement mortar lining in acc with ISO4179.

External coating: Pipes shall be externally coated with metallic zinc spray plus a further layer of resin painting to ISO8179.

Gasket: 100% SBR/NBR/EPDM rubber gasket in accordance with ISO4633.

Packing: Pipes from DN100 to DN300 be bundled with steel belts, others are in bulk.

Payment term: L/C, T/T.
Packing: In bulk vessel or in container.

Q: Are ductile iron pipes suitable for horizontal directional drilling (HDD) installations?: Yes, ductile iron pipes are suitable for horizontal directional drilling (HDD) installations. Ductile iron pipes are known for their strength and durability, making them an excellent choice for HDD projects. HDD involves drilling a horizontal hole underground and pulling a pipe through it, which can be challenging due to the forces exerted on the pipe during installation. Ductile iron pipes can withstand these forces and maintain their structural integrity, ensuring a successful HDD installation. Additionally, ductile iron pipes have excellent corrosion resistance, making them suitable for various soil and environmental conditions encountered during HDD projects. Overall, ductile iron pipes offer the necessary characteristics to withstand the rigors of HDD installations and are a reliable choice for such applications.

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: How do ductile iron pipes handle thermal cycling in industrial applications?: Ductile iron pipes are known for their exceptional ability to handle thermal cycling in industrial applications. Thermal cycling refers to the fluctuation in temperature that occurs during the operation of various industrial processes. These pipes are designed to withstand the stresses caused by thermal expansion and contraction, making them highly suitable for environments with significant temperature variations. One of the key characteristics of ductile iron pipes is their high thermal conductivity. This means that they can efficiently conduct heat away from the hot areas, minimizing the impact of thermal cycling. Additionally, ductile iron pipes have a low coefficient of thermal expansion, which means that they expand and contract at a slower rate compared to other materials. This helps to reduce the stresses imposed on the pipes during thermal cycling. Furthermore, ductile iron pipes have excellent mechanical properties, including high tensile strength and impact resistance. These properties enable the pipes to withstand the mechanical stresses that may arise due to thermal cycling. They can resist the formation of cracks or fractures, ensuring the integrity and longevity of the pipes in industrial applications. Moreover, ductile iron pipes have a high resistance to corrosion and oxidation. This is particularly important in industrial settings where the pipes may be exposed to aggressive chemicals or harsh environments. The corrosion resistance of ductile iron pipes ensures that they can withstand the corrosive effects of the process fluids and gases, even during thermal cycling. In summary, ductile iron pipes are well-equipped to handle thermal cycling in industrial applications. Their high thermal conductivity, low coefficient of thermal expansion, excellent mechanical properties, and resistance to corrosion make them a reliable choice for environments with significant temperature variations. These pipes can effectively withstand the stresses caused by thermal cycling, ensuring their durability and longevity in industrial settings.

Q: How do ductile iron pipes handle ground movement in earthquake-prone areas?: Ductile iron pipes are known for their excellent resistance to ground movement, making them a reliable choice for earthquake-prone areas. These pipes are designed to withstand external forces, including the ground shifting and movement caused by seismic activities. The flexibility of ductile iron pipes allows them to absorb and distribute the energy generated during ground movement. This flexibility is achieved due to the unique composition of ductile iron, which includes nodular graphite in its microstructure. The nodular graphite provides ductility and resilience to the pipe, allowing it to deform under stress without fracturing. When an earthquake occurs and the ground starts to move, ductile iron pipes can adapt to the changing conditions. They have the ability to elongate, compress, and bend, thus reducing the risk of pipe failure. This characteristic is crucial in earthquake-prone areas, as it helps prevent catastrophic failures and water loss that can occur with more rigid pipe materials. Moreover, ductile iron pipes have a high level of joint integrity, which further enhances their ability to handle ground movement during seismic events. The joints of these pipes are designed to withstand lateral and angular movement, ensuring that they remain intact and leak-free. In addition to their inherent flexibility, ductile iron pipes are often installed using techniques that enhance their resistance to ground movement. Anchoring systems, such as thrust blocks and restraints, can be utilized to secure the pipes and prevent excessive movement. These systems help to stabilize the pipeline network and further minimize the potential for damage during earthquakes. Overall, the combination of ductility, joint integrity, and anchoring systems make ductile iron pipes a reliable choice for handling ground movement in earthquake-prone areas. They provide a durable and resilient solution that can withstand the challenges posed by seismic activities, ensuring the continuous supply of water and minimizing the risk of infrastructure damage.

Q: What is the ductile cast iron pipe: Should not have this conceptI make the ductile iron pipe, haven't heard of this thing only ductile iron pipe, ductile cast iron heard tube

Q: Can ductile iron pipes be used for underground wastewater outfalls?: Yes, ductile iron pipes can be used for underground wastewater outfalls. Ductile iron pipes are a popular choice for underground applications due to their durability, strength, and corrosion resistance. They are designed to withstand high pressure and external loading, making them suitable for transporting wastewater over long distances and depths. Additionally, ductile iron pipes have a smooth internal surface, which helps to minimize friction and prevent the buildup of sediments or debris that could potentially block the flow of wastewater. Therefore, ductile iron pipes are commonly used in underground wastewater systems, including outfalls, to ensure efficient and reliable wastewater transport while minimizing the risk of pipe failure or blockages.

Q: How can the steel plastic composite pipe be connected with the cast iron pipe?: The hoop has the advantages of beautiful appearance, convenient operation, strong clamping force, good sealing performance, etc.. Mainly used for connecting and fastening vehicle, ship, diesel engine, gasoline engine, machine tools, fire, and other machinery and equipment, chemical equipment general nylon hose, plastic hose, hose cloth, water interface and seal etc..

Q: Ductile iron pipe is flexible pipe or rigid pipe: Steel tubes, of course, because ductile iron pipes are not easily deformed.

Q: Disadvantages of ductile iron pipes: Compared with cast iron, ductile iron has an absolute advantage in strength. The tensile strength of ductile iron is 60K, while the tensile strength of cast iron is only 31k. The yield strength of ductile iron is 40K, while the cast iron does not show yield strength, and eventually breaks. The strength to cost ratio of ductile iron is far superior to that of cast iron.

Q: Can ductile iron pipes be used for fire protection systems?: Yes, ductile iron pipes can be used for fire protection systems. Ductile iron pipes have excellent strength and durability, making them suitable for carrying water and withstanding the pressure required in fire protection systems. Additionally, they have good corrosion resistance, which is crucial for long-term use in fire protection applications.

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