DUCTILE IRON PIPES AND PIPE FITTINGS K7 DN900

DUCTILE IRON PIPES AND PIPE FITTINGS K7 DN900

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 pc

Supply Capability:: 30000 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 does ductile iron pipe perform in areas with high soil acidity?: Ductile iron pipe performs well in areas with high soil acidity due to its inherent corrosion resistance properties. The pipe is designed to withstand harsh environments and has a protective lining that prevents the acidic soil from causing damage. This lining acts as a barrier between the pipe and the soil, preventing the acid from corroding the iron. Additionally, ductile iron pipe has a high resistance to external loads, making it suitable for areas with unstable soil conditions. Overall, ductile iron pipe is a reliable choice for areas with high soil acidity as it can withstand the corrosive effects and provide long-lasting performance.

Q:What is the difference between a cast iron pipe and a ductile iron pipe?: Nodular cast iron has high strength and strong plasticity. The tensile strength of ductile iron is twice that of gray iron, and the yield strength even exceeds that of cast steel.

Q:Can ductile iron pipes be used in nuclear power plants?: Ductile iron pipes are suitable for use in nuclear power plants due to their improved flexibility and strength compared to traditional cast iron pipes. They are known for their durability, resistance to corrosion, and ability to withstand high pressure and temperature conditions. These pipes are a reliable and robust choice for transporting water, coolant, and other fluids in nuclear power plants. However, it is crucial to consider the specific requirements and regulations of each power plant before selecting the pipe material. It is necessary to ensure proper testing, certification, and compliance with nuclear industry standards to guarantee the safe and efficient operation of the power plant.

Q:How does ductile iron pipe perform in areas with high ground movement?: Areas with high ground movement are well-suited for the exceptional performance of ductile iron pipe. Its unique properties and design ensure a high resistance to deformation and damage caused by ground shifting, settling, or seismic activities. The material's ductility enables it to withstand significant stress and strain without fracturing or breaking, setting it apart from rigid materials like cast iron or PVC. Ductile iron pipe's ability to flex and absorb ground movement prevents catastrophic failures and guarantees the integrity of the pipeline system. Moreover, ductile iron pipe is manufactured with various joint configurations that enhance its performance in areas with high ground movement. Flexible joints, like restrained or mechanical joints, effectively accommodate movement by allowing limited rotation and translation, minimizing the risk of pipe separation or joint failure. Additionally, the robust construction of ductile iron pipe, featuring a thick wall thickness and high tensile strength, offers added protection against ground movement. This strength enables the pipe to withstand external loads and forces induced by the ground, maintaining its structural integrity and preventing deformation. To summarize, ductile iron pipe is an excellent choice for areas with high ground movement due to its exceptional ductility, flexible joints, and robust construction. Its ability to absorb ground movement while ensuring the functionality and safety of the pipeline system establishes it as a reliable and durable option in challenging environments.

Q:What are the different types of thrust restraints for ductile iron pipe?: There are several different types of thrust restraints that can be used for ductile iron pipe installations. These thrust restraints are designed to prevent the pipe from moving or separating under the forces generated by internal pressure, external loads, or changes in temperature. 1. Thrust blocks: Thrust blocks are concrete structures that are typically installed at bends, tees, and other changes in direction in the pipeline. They are designed to resist the thrust forces by transferring them to the surrounding soil or foundation. 2. Mechanical restraints: Mechanical restraints, such as tie rods or harnesses, are used to restrain the pipe by exerting an external force on it. These restraints are typically made of steel and can be adjusted to accommodate changes in pipe length or alignment. 3. Pipe anchors: Pipe anchors are devices that are installed at specific intervals along the pipeline to provide resistance against axial movement. They are usually made of steel and are embedded into the surrounding soil or concrete to provide a secure anchor point for the pipe. 4. Thrust collars: Thrust collars are devices that are installed around the pipe to prevent it from moving or separating. They are typically made of steel and are placed at strategic locations along the pipeline to absorb the thrust forces. 5. Restrained joint systems: Restrained joint systems are specialized pipe joints that are designed to resist axial forces. These joints typically have additional features, such as keyways or wedges, that provide resistance against movement. It is important to select the appropriate type of thrust restraint based on the specific requirements of the ductile iron pipe installation. Factors such as the pipe diameter, operating pressure, soil conditions, and potential external loads should be considered when determining the most suitable thrust restraint system. Consulting with a qualified engineer or pipe manufacturer can help ensure the proper selection and installation of thrust restraints for ductile iron pipe.

Q:What effect does magnesium play in nodular cast iron?: Magnesium can be graphite precipitated in spherical form.But the specific mechanism is not clear, and now it is still debated in the academic circles.In addition, magnesium and sulfur generate MgS, which removes S from molten iron, which impedes the formation of spheroidal graphite.Therefore, Mg has two functions to eliminate the influence of S on Nodular Iron and promote the precipitation of graphite in spherical form.

Q:A tube is used only in ductile iron pipes, isn't it?: Is that the nodular graphite cast iron pipe is called centrifugal ductile iron pipe, it has the properties of nature, iron and steel, excellent corrosion resistance, good ductility, good sealing effect, simple installation, mainly for municipal, industrial and mining enterprises, water supply, gas, oil etc.. Water supply pipe is the first choice, with high cost performance.

Q:Deep well spiral iron pipe, or ductile iron tube?: Ductile weakness: ductile cast iron pipes connected by human factors such as the operation level of responsibility, influence, construction not convenient. The advantages of PE PE PE pipe has good corrosion resistance and its anti inorganic performance than that of the metal pipe is much stronger in the buried without corrosion, construction convenient. Small diameter PE pipe in the price performance ratio is better than that of steel and ductile iron.PE tube have disadvantages: benzene, gasoline, carbon tetrachloride and other organic solvents have certain effect on pe. If the organic solvent is infiltrated into the polyethylene, the swelling will occur, and its physical properties will be decreased. Its pressure resistance and temperature resistance are poor.

Q:What are the common causes of failure in ductile iron pipes?: Ductile iron pipes can fail for various reasons. Corrosion is a significant factor. When exposed to water, soil, and other environmental elements, rust and corrosion can develop on the pipe's surface. This weakens the pipe's structure and eventually causes failure. Improper installation or mishandling is another common cause. If the pipes are not correctly installed or if they sustain damage during transportation or installation, they may develop cracks, fractures, or other physical defects. These issues compromise the pipe's functionality and contribute to failure. Inadequate design can also lead to failure. When a pipe is not designed to withstand expected loads, pressures, or environmental conditions, it becomes vulnerable to premature failure. It is crucial to carefully consider material properties, wall thickness, and diameter during the design process to ensure the pipe can handle the demands placed upon it. Failure can also result from poor maintenance and delayed repairs. Regular inspections, maintenance, and timely repairs are essential for identifying and addressing issues before they worsen. Neglecting these measures can lead to the gradual deterioration of the pipe, increasing the likelihood of failure. Lastly, external factors such as soil movement, seismic activity, or excessive traffic loads can cause failure in ductile iron pipes. These forces exert stress on the pipe, resulting in cracks, fractures, or complete failure. To prevent failure in ductile iron pipes, it is crucial to employ proper corrosion protection techniques, adhere to correct installation procedures, consider design factors adequately, implement regular maintenance and repair programs, and account for external factors during the planning and installation process.

Q:Are ductile iron pipes suitable for potable water applications?: Yes, ductile iron pipes are suitable for potable water applications. They have proven to be a reliable and durable choice for carrying drinking water due to their high strength, corrosion resistance, and ability to withstand internal and external pressure. Additionally, ductile iron pipes have been widely used in water distribution systems around the world for many years.

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