DUCTILE IRON PIPES AND PIPE FITTINGS K9 CLASS DN150

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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: How are ductile iron pipes protected against mechanical damage?: Various measures are implemented to protect ductile iron pipes from mechanical damage, ensuring their durability and longevity. One effective approach involves applying a protective coating to the exterior surface of the pipes. This coating acts as a barrier, safeguarding the ductile iron from physical abrasion, impact, and corrosion. Depending on specific requirements and environmental conditions, the coating can be composed of materials such as epoxy, polyethylene, or zinc. In addition to the protective coating, ductile iron pipes are designed with a high level of structural strength. They are manufactured to withstand significant pressure and external forces, making them less vulnerable to mechanical damage. The inherent strength of the material enables the pipes to resist deformation and cracking, even when subjected to heavy loads or ground movements. Moreover, proper bedding and backfilling techniques are employed during the installation of ductile iron pipes. This involves carefully placing the pipes in a prepared trench to ensure a stable foundation and minimize the risk of external forces causing damage. The correct backfill material is then used to provide support and prevent excessive pressure on the pipes. To further enhance protection against mechanical damage, additional measures such as concrete encasement or protective sleeves are often employed during the installation of ductile iron pipes. Concrete encasement involves surrounding the pipe with a layer of concrete, offering an extra layer of defense against external forces. Protective sleeves can also be utilized in areas prone to impact or where additional protection is necessary. Regular inspections and maintenance play a crucial role in ensuring the continuous protection of ductile iron pipes against mechanical damage. Periodic checks for signs of wear, corrosion, or other forms of damage enable timely repairs or replacements, preventing further deterioration. In summary, a combination of protective coatings, structural strength, proper installation techniques, and regular maintenance effectively safeguards ductile iron pipes against mechanical damage, guaranteeing their reliable performance and long lifespan in various applications.

Q: Are ductile iron pipes suitable for use in geothermal applications?: Geothermal applications can benefit from the use of ductile iron pipes. These pipes possess qualities such as strength, durability, and corrosion resistance, which are crucial for geothermal systems. In the realm of geothermal systems, which involve utilizing the Earth's heat for energy generation or building heating and cooling, ductile iron pipes are well-regarded. They are capable of enduring high temperatures and pressures without compromising their structural integrity. This ability to withstand thermal expansion and contraction ensures a dependable and long-lasting piping solution. Moreover, ductile iron pipes exhibit exceptional resistance to corrosion, making them ideal for the potentially corrosive environment often encountered in geothermal applications. This resistance guarantees that the pipes will not deteriorate over time, thus maintaining the system's integrity and minimizing the risk of leaks or failures. Additionally, ductile iron pipes possess a smooth interior surface, which aids in reducing pressure loss and energy consumption in geothermal systems. The smoothness of these pipes also lowers the likelihood of mineral deposits or scaling buildup, promoting efficient and uninterrupted heat transfer. All in all, ductile iron pipes prove to be a suitable choice for geothermal applications due to their strength, durability, corrosion resistance, thermal stability, and smooth interior surface. They offer a reliable and efficient piping solution capable of withstanding the demanding conditions of geothermal systems while ensuring long-term performance and minimal maintenance requirements.

Q: Are ductile iron pipes resistant to root intrusion?: Although ductile iron pipes typically show resistance to root intrusion, they are not completely impervious. Despite the strength and durability of the material, root intrusion can still happen if there are any cracks, joints, or damaged parts in the pipes. It should be emphasized that root intrusion tends to occur more frequently in older or inadequately maintained pipes, where cracks or gaps may eventually form. However, modern ductile iron pipes are frequently coated with protective layers or linings to decrease the likelihood of root intrusion. Moreover, regular inspection and maintenance can aid in identifying and resolving potential problems before they become more serious.

Q: How do ductile iron pipes handle ground movement in earthquake-prone areas?: Ductile iron pipes are designed to withstand ground movement in earthquake-prone areas due to their inherent strength and flexibility. The ductile nature of the iron allows the pipes to deform and absorb the seismic energy without breaking or fracturing. This ensures their durability and ability to maintain water supply and drainage systems even during seismic events. Additionally, ductile iron pipes have superior joint integrity, which further enhances their resistance to ground movement and minimizes the risk of leaks or pipe failure.

Q: Why does the cast iron pipe always run off when testing?: The pipeline is installed, straight section of each pipe will be added pier, concrete pipe, elbow, three links should also have concrete pier, specific installation method according to GB Atlas 03SS515, and the straight pipe to soil, pipeline interface will be exposed, easy to check.

Q: How does ductile iron pipe perform in areas with high soil corrosivity?: Due to its inherent corrosion-resistant properties, ductile iron pipe exhibits exceptional performance in areas with high soil corrosivity. The material specifically utilized in ductile iron pipes is engineered to endure harsh soil conditions, including those with elevated levels of corrosive elements. The protective coating is one of the key factors making ductile iron pipe suitable for areas with high soil corrosivity. Most ductile iron pipes are coated with either a layer of cement mortar or a polyethylene sleeve, which acts as a barrier separating the soil from the pipe. This coating serves the dual purpose of preventing direct contact between the soil and the iron, as well as providing an additional layer of defense against corrosion. Moreover, ductile iron possesses inherent corrosion resistance. It contains a higher carbon percentage compared to traditional cast iron, enhancing its strength and durability. The carbon content also generates a protective layer of graphite within the iron matrix, acting as a natural barrier against corrosion. Ductile iron pipes have demonstrated a long service life in areas with high soil corrosivity, often surpassing 100 years. This is due to their ability to withstand corrosion and maintain structural integrity even in harsh environments. Additionally, ductile iron pipes exhibit high resistance to external loads and can endure the stresses associated with high soil corrosivity. In summary, ductile iron pipe is an exceptional choice for areas with high soil corrosivity. Its corrosion-resistant properties, coupled with protective coatings, guarantee the pipe's durability and reliability, even under the most challenging soil conditions.

Q: How are ductile iron pipes protected during transportation and storage?: Ductile iron pipes are typically protected during transportation and storage through various methods. One common practice is to apply a coating of bituminous paint or epoxy on the exterior surface of the pipes to prevent corrosion. Additionally, the pipes are often wrapped with plastic or other protective material to shield them from physical damage and moisture. Proper handling and stacking techniques are also employed to minimize the risk of any deformation or cracking during transportation and storage.

Q: How are ductile iron pipes inspected for quality control?: To guarantee compliance with industry standards, ductile iron pipes undergo a series of rigorous tests and inspections for quality control. Trained inspectors conduct visual inspections, carefully examining the pipes for visible defects like cracks, pits, or surface irregularities. This process aims to identify any visual flaws that could compromise the overall quality of the pipes. Dimensional inspection is another crucial quality control measure. Specialized tools and equipment are used to measure the pipes' dimensions, including diameter, wall thickness, and length. By comparing these measurements to specified tolerances, any deviations can be detected, and necessary corrective actions can be taken. Hydrostatic pressure testing is an important step in quality control. The pipes are subjected to internal pressure higher than their intended operating pressure to ensure they can withstand the required pressure without any leakage or failure. This test involves filling the pipes with water and gradually increasing the pressure while closely monitoring for any signs of leakage or deformation. Furthermore, mechanical tests such as tensile strength testing and impact testing are conducted to evaluate the pipes' mechanical properties. Controlled forces or impacts are applied to the pipes, and their response is measured. This allows for the assessment of the pipes' strength, toughness, and durability, ensuring they meet the necessary requirements. Metallurgical examinations are also carried out to analyze the microstructure of the ductile iron pipes. Samples are taken from the pipes, and microscopy techniques are used to examine the grain structure, phase distribution, and any potential defects at a microscopic level. This process helps identify any issues that may not be visible to the naked eye but could affect the overall quality of the pipes. Overall, the inspection process for ductile iron pipes encompasses a combination of visual, dimensional, hydrostatic, mechanical, and metallurgical tests. These quality control measures ensure that the pipes meet the required standards, providing reliable and durable infrastructure for various applications.

Q: What is the expected hydraulic performance of ductile iron pipes?: Ductile iron pipes are known for their exceptional hydraulic performance, boasting a remarkably smooth inner surface that facilitates fluid flow, resulting in reduced friction losses and increased flow rates. With excellent resistance to corrosion and abrasion, these pipes demonstrate long-lasting efficacy in diverse water and wastewater applications. In addition, the high tensile strength of ductile iron pipes enables them to withstand substantial internal and external loads without any deformation or failure. Their versatility allows for usage in both above-ground and below-ground scenarios, encompassing water distribution systems, sewage and wastewater transport, industrial piping, and irrigation systems. Moreover, the flexibility and resilience of ductile iron pipes enable them to adapt to ground movement and settle without any risk of breakage. This attribute proves invaluable in areas with unstable soil conditions or seismic activity, making these pipes a dependable choice. Overall, the hydraulic performance of ductile iron pipes is characterized by efficient flow, minimal pressure losses, durability, and the capacity to withstand various external forces. These exceptional qualities establish them as a favored option for water infrastructure projects, ensuring reliable and efficient fluid transportation over a prolonged service life.

Q: Do ductile iron pipes require special maintenance?: Yes, ductile iron pipes do require special maintenance. While ductile iron is known for its strength and durability, it is still susceptible to certain forms of corrosion. Regular maintenance is necessary to prevent corrosion and prolong the lifespan of the pipes. This maintenance typically includes periodic inspections to check for any signs of corrosion or damage, as well as cleaning and protective coating applications. Additionally, proper handling and installation techniques should be followed to ensure the integrity of the pipes. Regular maintenance and adherence to industry best practices can help prevent leaks, breaks, and other issues, ultimately saving time and money in the long run.

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