DUCTILE IRON PIPES & PIPE FITTINGS K9 CLASS DN125

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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 installed?: Ductile iron pipes are typically installed using a variety of methods, including trenching or open-cut excavation, horizontal directional drilling, and pipe bursting. In the traditional trenching method, a trench is dug to the required depth and slope, and the pipe is then lowered into place and joined using mechanical or push-on joints. Horizontal directional drilling involves drilling a pilot hole and then pulling the pipe through it, while pipe bursting involves breaking the existing pipe and replacing it with a new ductile iron pipe.

Q: How do ductile iron pipes handle thermal expansion and contraction?: Ductile iron pipes are specifically designed to handle thermal expansion and contraction effectively. Due to their unique composition and structure, which includes graphite nodules in the iron matrix, these pipes have the ability to accommodate temperature variations without significant damage or distortion. The graphite nodules act as flexible joints, allowing the pipe to expand and contract without cracking or breaking. This characteristic makes ductile iron pipes highly resistant to the stresses caused by thermal fluctuations, ensuring their long-term durability in various temperature environments.

Q: What are the typical lengths of ductile iron pipes?: The typical lengths of ductile iron pipes range from 18 feet to 20 feet, although shorter lengths such as 10 feet or longer lengths such as 40 feet can also be found depending on specific project requirements.

Q: How are ductile iron pipes protected against internal corrosion caused by chemicals?: Ductile iron pipes are protected against internal corrosion caused by chemicals through a combination of several protective measures. Firstly, these pipes are usually lined with a cement mortar lining or an epoxy coating. This lining acts as a barrier between the chemical substances in the water or sewage and the iron material of the pipe, preventing direct contact and corrosion. In addition to the lining, a corrosion-resistant polymer or bituminous coating is often applied to the exterior of the ductile iron pipes. This coating serves as an extra layer of protection, safeguarding the pipe against any external chemical exposure that may occur. Furthermore, cathodic protection is commonly employed to prevent internal corrosion. This technique involves the use of sacrificial anodes, typically made of zinc or magnesium, which are attached to the pipe. The anodes corrode over time instead of the iron, effectively sacrificing themselves to protect the pipe from corrosion caused by chemicals. Regular maintenance and monitoring of the ductile iron pipes are also crucial in preventing and addressing any potential corrosion issues. This includes routine inspections, cleaning, and repairing any damaged or corroded areas promptly. Overall, the combination of lining, external coating, cathodic protection, and maintenance practices ensures that ductile iron pipes are well-protected against internal corrosion caused by chemicals, prolonging their lifespan and ensuring the integrity of the pipeline system.

Q: How can the connection of ductile iron pipe elbow be convenient for connecting?: Ductile cast iron pipe in the groove pipe connection technology is also called the lathedog connection technology, has become the most liquid and gas pipeline connection technology, although this technology is later than foreign in domestic development time, but because of its advanced technology, domestic market quickly received. Since 1998, it has been developed and applied in just a few years. It has gradually replaced two traditional ways of pipe connection, such as flange and welding. Not only technically more mature, the market is generally recognized, but also by the national laws and regulations actively guide the policy. The application of grooved pipe connection technology makes the complex pipe connection procedure simple, fast and convenient. Took a big step forward in pipeline connection technology.

Q: If the ductile iron pipe is broken, can we use rush repair?: These specifications are also based on the outer diameter of the tube. In daily life, we may also encounter a pipeline rupture, or when it is on the road to repair, excavator accidentally hit PE, PPR water supply and drainage pipeline, as long as a little, can be used to repair the pipeline repair section.

Q: What are the advantages of using ductile iron pipes over other materials?: There are several advantages of using ductile iron pipes over other materials. Firstly, ductile iron pipes have superior strength and durability compared to other materials such as PVC, HDPE, or concrete pipes. They have a high tensile strength, which means they can withstand higher pressure and can handle heavy loads without cracking or breaking. This makes them suitable for various applications, including water and sewage systems, as well as industrial pipelines. Secondly, ductile iron pipes have excellent corrosion resistance. They are typically coated with a protective layer, such as zinc or epoxy, which prevents the formation of rust and extends their lifespan. This makes them ideal for underground installations or in areas with aggressive soil conditions or corrosive substances. Another advantage of ductile iron pipes is their flexibility. They can be manufactured in various lengths, diameters, and angles, allowing for easy installation and adaptability to different project requirements. Additionally, their flexibility enables them to withstand ground movements, such as settlement or seismic activities, without causing significant damage. Furthermore, ductile iron pipes have a smooth internal surface, which reduces friction and improves flow efficiency. This results in lower energy consumption for pumping systems and reduced maintenance costs. Additionally, the smooth surface minimizes the risk of deposits or clogs, ensuring a consistent and uninterrupted flow of fluids. Lastly, ductile iron pipes have a long service life. When properly installed and maintained, they can last for over 100 years. This longevity not only reduces the need for frequent replacements but also provides a sustainable and cost-effective solution for infrastructure projects. In conclusion, the advantages of using ductile iron pipes over other materials include their superior strength, corrosion resistance, flexibility, smooth internal surface, and long service life. These qualities make them a reliable choice for various applications, providing efficient and durable solutions for water, sewage, and industrial pipelines.

Q: Can ductile iron pipe be used for water distribution systems in cold climates?: Yes, ductile iron pipe can be used for water distribution systems in cold climates. Ductile iron has excellent resistance to freezing and can withstand extreme cold temperatures without becoming brittle or cracking, making it a suitable choice for water distribution systems in cold climates.

Q: Can ductile iron pipes be used for stormwater drainage systems?: Yes, ductile iron pipes can be used for stormwater drainage systems. Ductile iron pipes are known for their strength, durability, and resistance to corrosion, making them suitable for various applications including stormwater drainage. These pipes can efficiently handle the high flow rates and heavy loads associated with stormwater runoff, making them a reliable choice for such systems.

Q: Do ductile iron pipes require external protection against stray electrical currents?: Ductile iron pipes indeed necessitate external safeguarding against stray electrical currents. The presence of such currents can induce corrosion in the pipes, resulting in premature failure and probable leakage. To counteract this, protective coatings or wraps are employed on the ductile iron pipes, creating a shield between the pipes and the electrical currents. This safeguarding measure guarantees the durability and dependability of the pipes, warding off expensive repairs and potential safety risks.

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