DUCTILE IRON PIPES AND PIPE FITTINGS K8 CLASS DN400

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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: What is the exterior anticorrosion of nodular cast iron pipes?: First clean the impurity on the surface of the pipe or fitting, and then sprayed zinc treatment (130g/m and asphalt paint coating fand) not less than 70 m

Q: How are ductile iron pipes tested for quality?: Various methods are employed to test the quality of ductile iron pipes, ensuring they meet required standards and specifications. One commonly used test is the hydrostatic pressure test, wherein the pipes are subjected to high-pressure water or other liquids to detect leaks or weaknesses. Water is typically used to fill the pipes, with the pressure gradually increased to a predetermined level. This test effectively identifies potential defects that could compromise the pipes' integrity. Another important quality test for ductile iron pipes is the tensile test. This involves pulling a sample of the pipe until it breaks, measuring the applied force and elongation. By doing so, the pipe's tensile strength and ductility can be determined, ensuring it can withstand required loads and stresses without deformation or failure. In addition to these tests, other quality checks include visual inspection, dimensional checks, and surface defect examinations. Visual inspection involves scrutinizing the pipes for visible defects like cracks, voids, or surface irregularities. Dimensional checks ensure the pipes meet specified dimensions and tolerances. Furthermore, ductile iron pipes often undergo corrosion resistance tests. This entails exposing the pipes to corrosive environments such as saltwater or acidic solutions to evaluate their resistance to corrosion. This is vital in determining the pipes' durability and longevity, particularly in harsh conditions. Overall, ductile iron pipes undergo rigorous testing to ensure their quality and performance. These tests guarantee that the pipes meet required standards, are safe for use, and can withstand anticipated loads and environmental conditions in their intended applications.

Q: Method for joining cast iron pipes: The connection between the pipe and the pipe adopts the form of socket type or flange disk interface. According to the function, it can be divided into two kinds: flexible interface and rigid interface. The flexible interface is sealed with rubber ring, which allows a certain degree of corner and displacement, so it has good seismic resistance and tightness. It is easy and quick to install than rigid interface. It has little labor intensity according to the casting method.

Q: Are ductile iron pipes resistant to chemicals?: Yes, ductile iron pipes are highly resistant to a wide range of chemicals, making them suitable for various applications involving corrosive substances.

Q: What is the typical diameter range of ductile iron pipes?: The typical diameter range of ductile iron pipes varies depending on the specific application and industry standards. Generally, ductile iron pipes come in a wide range of diameters to accommodate various needs. In water distribution systems, the typical diameter range can vary from as small as 3 inches (76 mm) to as large as 64 inches (1626 mm) or even larger. For sewer and wastewater systems, the typical diameter range is usually between 4 inches (102 mm) to 48 inches (1219 mm). However, it is important to note that these ranges are not exhaustive and there may be instances where ductile iron pipes are available in sizes outside of these common ranges. It is always advisable to consult industry standards and specific project requirements to determine the appropriate diameter range for ductile iron pipes.

Q: How are ductile iron pipes tested for quality assurance?: Ductile iron pipes undergo various testing procedures to ensure their quality and meet industry standards. These quality assurance tests are conducted on both raw materials and finished products to ensure the durability, strength, and overall reliability of ductile iron pipes. One of the initial tests is the chemical analysis of the raw materials used in manufacturing the pipes. This analysis ensures that the composition of the iron, carbon, and other elements is within the specified range, as different compositions can affect the pipe's strength and corrosion resistance. Next, mechanical tests are performed to evaluate the strength and ductility of the pipes. Tensile tests are conducted to determine the ultimate tensile strength, yield strength, and elongation properties of the pipe. This helps in assessing the pipe's ability to withstand external pressure or bending forces. Additionally, impact tests are performed to evaluate the pipe's resistance to sudden loading or impact. This test measures the energy absorbed by the pipe when subjected to a high impact force, ensuring that it can withstand potential accidental impacts during installation or operation. Another critical test is the hydrostatic pressure test, which checks the pipes' ability to withstand internal pressure. In this test, the pipes are filled with water and subjected to a specified pressure for a specific duration. This ensures that the pipes can withstand the expected operating pressure without any leakage or failure. Furthermore, dimensional and visual inspections are conducted to ensure that the pipes meet the required specifications. These inspections include checking the pipe's outer diameter, length, wall thickness, and overall appearance for any defects, such as cracks, voids, or irregularities. Lastly, corrosion resistance tests are performed to assess the pipe's ability to resist corrosion when exposed to different environments or fluids. This helps in determining the expected lifespan of the pipes and their suitability for various applications. Overall, these quality assurance tests play a crucial role in ensuring that ductile iron pipes meet the required standards and provide reliable and long-lasting performance in various infrastructure projects.

Q: Can ductile iron pipes be used for wastewater reuse projects?: Yes, ductile iron pipes can be used for wastewater reuse projects. Ductile iron is a strong and durable material that can withstand the corrosive nature of wastewater. It is commonly used in wastewater treatment plants and distribution systems for its ability to handle high-pressure and heavy loads. Additionally, ductile iron pipes have a long lifespan, making them a reliable choice for wastewater reuse projects.

Q: What does "K8" mean in ductile iron pipe grades?: K9 is GB, K10 is specially customized, K8... Strictly speaking, it is not up to standard, standard length, wall thickness and so on.. Many workshops, grades of factory products, such as K9, standard length 6.15M, K8 is 6M, wall thickness from the beginning of DN100, are thin on the point.

Q: How can the ductile iron pipe be tested?: Good command of pipe connection must be by hand when a pressure test, must be clear, on the back, pier, interface division, each part of the exhaust valve, must be responsible, then carefully inspected and clear and uniform pressure test.

Q: How do ductile iron pipes perform in high-pressure applications?: Ductile iron pipes are known for their exceptional strength and durability, making them highly suitable for high-pressure applications. These pipes are designed to withstand immense internal and external pressures, making them well-suited for underground or above-ground installations where high-pressure conditions are expected. One of the key advantages of ductile iron pipes in high-pressure applications is their ability to resist cracking or bursting. The inherent ductility of the material allows it to absorb and distribute the pressure evenly, minimizing the risk of failure under high-pressure conditions. This makes ductile iron pipes a reliable choice for water supply systems, oil and gas pipelines, and other applications where the pipe is subjected to significant pressure. Additionally, ductile iron pipes have excellent corrosion resistance properties, which further enhances their performance in high-pressure environments. The pipes are typically coated with a protective layer, such as cement mortar or epoxy, which acts as a barrier against corrosion. This protective coating prevents the formation of rust or scale inside the pipe, ensuring a smooth flow and maintaining the structural integrity even under high-pressure conditions. Furthermore, ductile iron pipes have a high tolerance for external loads, such as soil pressure, traffic loads, or other external forces. This strength enables them to withstand the additional stress that may be present in high-pressure applications, ensuring the long-term reliability and performance of the pipe system. Overall, ductile iron pipes offer exceptional performance in high-pressure applications. Their strength, durability, corrosion resistance, and ability to withstand external loads make them a reliable choice for various industries and infrastructure projects where high-pressure conditions are a concern.

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