DUCTILE IRON PIPES AND PIPE FITTINGS K9 CLASS DN1100

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 22 pc

Supply Capability:: 3000 pc/month

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Material : Ductile Cast Iron
Size Range : DN 80mm to DN 2000mm
Unit Effective Length : 6m or 5.7m
Manufacture Standard: ISO 2531:1998/ EN 545:2006/EN 598:2007
Annual capacity : 200,000 tons
Coating Exterior: Zinc 130g/m2 according to ISO 8179-1 and bitumen coating 70 microns.
Cement Interior: Portland Cement/ High Alumina Cement/ Sulphate Resisting Cement Lining according to ISO 4179
Special requirements on external coating and internal lining can be applied
We also provide accessories such as SBR/EPDM rubber gaskets, lubricant paste, pipe caps, PE sleeves, etc.

Additional Parts:

Each pipe is strictly inspected according to related standard to ensure permanently high performance.
Easy Installation at site and service free for life
Long Service Lifespan
Quotation will arrive you within 24hours once we get your inquiry.
We guarantee offering you a competitive price.
A copy of original inspection reports of pipes will be offered after shipment.
Photos of loading process will be sent to the customer after shipment effect.
We will follow-up the delivery progress after shipment effect and update to the customer on weekly basis.

Q:Can ductile iron pipes be used for water supply networks?: Yes, ductile iron pipes can be used for water supply networks. Ductile iron pipes are known for their strength, durability, and resistance to corrosion, making them an ideal choice for transporting water. Additionally, their flexibility allows for easy installation and maintenance, making them a popular option for water supply networks.

Q:How do ductile iron pipes handle pressure surges in pumping stations?: Ductile iron pipes excel at effectively managing pressure surges in pumping stations. The exceptional strength and flexibility of ductile iron make it an excellent choice for withstanding sudden increases in pressure that can occur during pump start-up or shutdown. One of the standout qualities of ductile iron pipes is their remarkable capacity to absorb and distribute energy. When a pressure surge arises, these pipes can absorb the excess pressure and evenly distribute it throughout the pipe network. This capability greatly reduces the impact of the surge and safeguards against potential damage to the pipes or pumping station. Furthermore, ductile iron pipes possess a high resistance to impact and stress, which further bolsters their ability to handle pressure surges. Their manufacturing process imparts a unique strength and durability that allows them to endure the forces exerted during pressure fluctuations without significant deformation or failure. Moreover, ductile iron pipes boast a smooth internal surface that minimizes friction and turbulence within the pipe network. This smooth flow characteristic helps mitigate the effects of pressure surges by ensuring efficient movement of water without placing additional stress on the pipes. In conclusion, ductile iron pipes are meticulously engineered to handle pressure surges in pumping stations. They excel at absorbing and dissipating excess pressure, enduring impact and stress, and promoting smooth flow. Their robustness and reliability make them the ideal choice for applications where pressure fluctuations are prevalent, guaranteeing the longevity and efficiency of pumping infrastructure.

Q:Are ductile iron pipes more resistant to breaks and cracks than other pipe materials?: Yes, ductile iron pipes are generally more resistant to breaks and cracks compared to other pipe materials. Ductile iron is a type of cast iron that has been treated with magnesium to make it more flexible and less brittle. This enhanced flexibility allows ductile iron pipes to withstand high levels of pressure and external loads without breaking or cracking. Compared to other common pipe materials like PVC, HDPE, or steel, ductile iron pipes have superior strength and durability. They have a higher tensile strength, which means they can withstand greater forces and pressures without failing. Additionally, ductile iron pipes have a higher impact resistance, making them less prone to cracking or breaking under sudden impact or external loads. Another advantage of ductile iron pipes is their resistance to corrosion. The material is naturally resistant to rust and can withstand harsh environmental conditions, making it suitable for underground installations or areas with corrosive soils. This corrosion resistance further contributes to the longevity and overall integrity of the pipes. Furthermore, ductile iron pipes have a longer lifespan compared to other pipe materials. They are designed to last for several decades, often exceeding 50 years, with minimal maintenance. This extended lifespan reduces the need for frequent replacements, saving both time and money in the long run. However, it is important to note that no material is completely immune to damage or failure. Proper installation, maintenance, and adherence to industry standards and guidelines are essential to ensure the optimal performance and longevity of ductile iron pipes. Regular inspection and monitoring should also be conducted to identify any potential issues or signs of deterioration, allowing for timely repairs or replacements.

Q:What are the specifications of cast iron pipes?: Compared with grey cast iron pipe, ductile iron pipe has higher strength, better toughness, thinner tube wall, less metal consumption, and can bear higher pressure. The effective length is 5 meters and 6 meters. According to the wall thickness, it is divided into two grades P and G. It is the development direction of cast iron pipe.

Q:Can ductile iron pipes be used for irrigation systems in saline soil conditions?: Ductile iron pipes, due to their durability and corrosion resistance, can be utilized for irrigation systems in saline soil conditions. These pipes are renowned for their ability to withstand various soil conditions, including saline soil, which is characterized by elevated salt levels that can lead to corrosion and material deterioration. However, ductile iron pipes possess a protective coating, such as cement mortar lining or polyethylene encasement, that provides an added layer of defense against corrosion. Consequently, they can endure the corrosive impacts of saline soil and maintain their structural integrity for an extended duration. Moreover, ductile iron pipes exhibit a high tensile strength, enabling them to resist cracks and breaks, which is crucial for irrigation systems necessitating a consistent and dependable water supply. Consequently, ductile iron pipes represent a viable option for irrigation systems operating in saline soil conditions.

Q:How are ductile iron pipes manufactured?: Ductile iron pipes are produced using a technique called centrifugal casting, which employs a spinning mold. The process commences with the selection and preparation of top-notch ductile iron, a form of cast iron containing small quantities of magnesium to enhance its strength and ductility. Initially, the ductile iron is melted in a furnace at exceedingly high temperatures. Once the molten iron attains the desired temperature, it is poured into a rotating mold. Shaped like a pipe, the mold spins at a high speed, ensuring even distribution of the molten iron along its inner surface. While the mold spins, the molten iron cools and solidifies against the mold walls. This swift cooling leads to the formation of a fine-grained structure, thereby augmenting the mechanical properties of the pipe, including its strength and durability. The spinning mold continues to rotate until the pipe solidifies completely, typically within a few minutes. Upon solidification, the pipe is extracted from the mold and any excess material, referred to as the "skin," is eliminated. Typically, machining or grinding is employed to remove the skin, achieving the desired dimensions and surface finish. Subsequently, the pipe undergoes heat treatment to further enhance its mechanical properties and alleviate internal stresses. After the completion of heat treatment, the pipe undergoes a thorough inspection to identify any defects or imperfections. This inspection encompasses visual examinations, non-destructive testing methods, and pressure testing to ensure compliance with the required specifications and standards. If any defects are detected, the severity of the issue determines whether the pipe undergoes repair or is rejected. Lastly, the pipes are coated with a protective layer to prevent corrosion and extend their lifespan. This protective coating can be applied through various methods, such as cement mortar lining, epoxy coating, or zinc coating. In summary, the manufacturing process of ductile iron pipes encompasses iron melting, centrifugal casting, cooling, skin removal, heat treatment, inspection, and coating. This process guarantees the production of high-quality pipes characterized by exceptional strength, durability, and resistance to corrosion.

Q:Can ductile iron pipes be used for trenchless installations?: Yes, ductile iron pipes can be used for trenchless installations. Trenchless technology allows for the installation, repair, or replacement of underground infrastructure without the need for extensive excavation. Ductile iron pipes, known for their strength and durability, are suitable for various trenchless methods such as horizontal directional drilling (HDD), pipe bursting, and slip lining. These methods minimize disruption to the surrounding environment and reduce costs compared to traditional open-cut trenching.

Q:What's the difference between grey cast iron pipe and ductile iron pipe?: Spheroidal graphite cast iron and ordinary cast iron contain graphite monomer, that is to say, cast iron is a mixture of iron and graphite. The graphite in ordinary cast iron is flaky, and the strength of graphite is very low, so there are many flakes of voids in the cast iron, so the strength of ordinary cast iron is lower and more brittle. Graphite in graphite cast iron is spherical, equivalent to the existence of many spherical voids in cast iron. The effect of spherical voids on the strength of cast iron is much smaller than that of sheet voids, so the strength of nodular cast iron is much higher than that of ordinary cast iron.

Q:Can ductile iron pipes be used for conveying gases?: Yes, ductile iron pipes can be used for conveying gases. Ductile iron has excellent mechanical properties and is resistant to corrosion, making it a suitable material for transporting various types of gases. Additionally, ductile iron pipes are known for their strength and durability, making them a reliable choice for gas transmission systems.

Q:Are ductile iron pipes resistant to chloride-induced corrosion?: Yes, ductile iron pipes are resistant to chloride-induced corrosion. Ductile iron is a type of cast iron that has been treated with magnesium to make it more flexible and resistant to cracking. It has a ferritic microstructure which provides excellent resistance to corrosion caused by chlorides. Chloride-induced corrosion can occur when chloride ions in the water or soil come into contact with the metal surface, leading to the formation of corrosion products such as rust. However, the presence of magnesium in ductile iron forms a protective layer on the surface, preventing the chloride ions from reaching the metal and thus inhibiting corrosion. This makes ductile iron pipes suitable for a wide range of applications, including water supply and sewerage systems, where chloride exposure is common.

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