DUCTILE IRON PIPES AND PIPE FITTINGS K9 CLASS DN700

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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:Are ductile iron pipes suitable for underground river crossings?: Yes, ductile iron pipes are suitable for underground river crossings. Ductile iron is a strong and durable material that can withstand the external pressures and loads experienced during such crossings. It has excellent tensile strength, impact resistance, and durability, making it ideal for underground applications where the pipes may be subjected to high water pressure, ground movement, or other environmental factors. Additionally, ductile iron pipes have a long service life and are resistant to corrosion, which is important when dealing with water crossings. Their ability to withstand these conditions makes them a reliable choice for underground river crossings.

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 does ductile iron pipe perform in areas with high soil contamination?: Ductile iron pipe performs well in areas with high soil contamination due to its inherent strength and corrosion resistance. Its durable and robust nature allows it to withstand the chemical and physical challenges posed by contaminated soil. Additionally, its smooth interior surface minimizes the accumulation of debris and sediment, reducing the chances of blockages and maintaining efficient flow. Overall, ductile iron pipe is a reliable choice for areas with high soil contamination, providing long-lasting and dependable performance.

Q:How do we handle the leaking of the ductile iron pipe?: In order to repair the defects of castings, the same or similar materials are usually adopted, and the materials with better performance or special requirements are used under special circumstances. Before welding, it is necessary to check the defects, determine the location, size and nature of the defects, and dig them out in accordance with the relevant measures, and then weld them again. Therefore, the preparation before welding must be in place.

Q:Can ductile iron pipes be used for underwater installations?: Yes, ductile iron pipes can be used for underwater installations. Ductile iron is a strong and durable material that is resistant to corrosion, making it suitable for submerged applications. Additionally, ductile iron pipes have excellent joint integrity, ensuring water-tightness even under high hydrostatic pressure. The pipes are often coated with protective linings and coatings to further enhance their resistance to corrosion and extend their lifespan in underwater environments. Overall, ductile iron pipes are a reliable choice for underwater installations due to their strength, durability, and corrosion resistance properties.

Q:What is the expected maintenance for ductile iron pipes?: The expected maintenance for ductile iron pipes typically includes regular inspections for signs of corrosion or damage, cleaning to remove any sediment or debris buildup, and occasional repair or replacement of sections that are worn or compromised.

Q:What's the difference between grey cast iron pipe and ductile iron pipe?: Ductile iron is close to medium carbon steel and is much cheaper. Vermicular graphite iron is the best, but grey iron is worse and white iron is the worst. Therefore, the quality of ductile iron pipe with better quality and price is superior to other cast iron pipe fittings.

Q:Are ductile iron pipes susceptible to external loading or pressure?: Yes, ductile iron pipes are susceptible to external loading or pressure. They have the ability to withstand moderate external loads and pressure due to their high tensile strength and flexibility. However, excessive loading or pressure can cause deformation or damage to the pipes, leading to potential leaks or structural failure. Therefore, proper consideration and engineering analysis should be done to ensure the pipes are installed and operated within their design limits.

Q:How does ductile iron pipe handle soil movement?: Ductile iron pipe has excellent resistance to soil movement due to its high flexibility and strength. It can withstand ground settlement, soil shifting, and other forms of soil movement without cracking or breaking. The pipe's ductility allows it to absorb the stress and strain caused by soil movement, making it a reliable and durable choice for underground pipelines.

Q:What are the specifications of cast iron pipes?: The nominal diameter of the continuous grey cast iron pipe is 75~1200 mm. It adopts the form of socket type or flange disk interface. It can be divided into two kinds of flexible interface and rigid interface according to function. The length of the straight pipe is 4 meters, 5 meters and 6 meters. According to the wall thickness, LA, A and B are divided into three grades. The nominal diameter of the centrifugal cast iron pipe of the sand mould is 200~1000 mm, the effective length is 5 meters and 6 meters. According to the wall thickness, it is divided into two grades: P and G. High strength, good toughness, thin tube wall, little metal consumption, and can bear higher pressure,

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