DUCTILE IRON PIPE AND PIPE FITTINGS K7 CLASS DN300

DUCTILE IRON PIPE AND PIPE FITTINGS K7 CLASS DN300

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 23 pc

Supply Capability:: 3000 pc/month

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Ductile Iron Pipe On Sale Made In China DN300

Duct Iron Pipe DI Pipe ISO 2531 DN 80-300mm

· 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 restrained against axial thrust forces?: Ductile iron pipes are typically restrained against axial thrust forces through the use of various mechanical joint systems. These joints, such as the push-on joint or the restrained joint, provide a secure connection between the pipes, preventing movement and ensuring structural integrity. Additionally, methods like concrete thrust blocks or anchor blocks are often used to further restrain the pipes and counteract any axial thrust forces that may be exerted on them.

Q: What are the different lining thickness options for ductile iron pipe?: The different lining thickness options for ductile iron pipe typically depend on the specific application and the requirements of the project. The most common lining options for ductile iron pipe include cement mortar lining, polyurethane lining, and polyethylene lining. Cement mortar lining is one of the oldest and most widely used lining options for ductile iron pipes. It involves applying a layer of cement mortar to the inner surface of the pipe, which provides protection against corrosion and enhances the hydraulic performance of the pipe. The thickness of cement mortar lining can vary, typically ranging from 3mm to 6mm. Polyurethane lining is another popular choice for ductile iron pipes, especially in applications where resistance to abrasion and chemical attack is required. Polyurethane linings are typically applied using a spray or casting method, and the thickness can vary depending on the specific requirements of the project. Generally, polyurethane linings can range from 1mm to 4mm in thickness. Polyethylene lining is a relatively newer technology for ductile iron pipes and is commonly used in applications where resistance to chemical corrosion is necessary. Polyethylene linings are typically applied using a rotational lining process, where a layer of molten polyethylene is evenly distributed on the internal surface of the pipe. The thickness of polyethylene lining can vary from 2mm to 8mm, depending on the specific project requirements. It is important to note that the lining thickness can be customized based on the specific requirements of the project, such as the corrosiveness of the transported fluid, the operating conditions, and the desired service life of the pipe. Consulting with a qualified engineer or pipe manufacturer is recommended to determine the most suitable lining thickness for a particular application.

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: What are the different coatings available for ductile iron pipe?: Some of the different coatings available for ductile iron pipe include cement mortar lining, polyethylene encasement, polyurethane coating, and epoxy coating.

Q: How can the connection of ductile iron pipe elbow be convenient for connecting?: The utility model relates to a groove connecting pipe which has the function of sealing and sealing, and mainly comprises three parts: a sealing rubber ring, a clamping band and a locking bolt. The inner rubber sealing ring is arranged on the outer side of the connecting pipe and is matched with the pre rolling groove, and then the outer ring is buckled on the rubber ring, and then can be fastened with two bolts. Because of the special sealing structure design of the rubber sealing ring and the clamp hoop, the groove connecting piece has good sealing property, and the sealing property is enhanced correspondingly with the increase of the fluid pressure in the pipe.

Q: Can ductile iron pipes be used for bridge crossings?: Yes, ductile iron pipes can be used for bridge crossings. Ductile iron is a strong and durable material that is commonly used in various applications, including water and wastewater systems. When it comes to bridge crossings, ductile iron pipes offer several advantages. They have high tensile strength, which allows them to handle the load and stress imposed by the bridge structure. Additionally, ductile iron pipes are resistant to corrosion, making them suitable for environments where bridges may be exposed to moisture and other harsh conditions. Furthermore, ductile iron pipes have the ability to withstand seismic activity, making them a reliable choice for areas prone to earthquakes. Overall, ductile iron pipes are a suitable and reliable option for bridge crossings due to their strength, durability, corrosion resistance, and ability to withstand seismic activity.

Q: How are ductile iron pipes inspected for quality control?: Ductile iron pipes are inspected for quality control through a series of rigorous tests and inspections to ensure their compliance with industry standards. One of the most common methods used is visual inspection, where trained inspectors examine the pipes for any visible defects such as cracks, pits, or surface irregularities. This helps in identifying any visual defects that may compromise the overall quality of the pipes. In addition to visual inspection, another crucial quality control measure is dimensional inspection. This involves measuring the dimensions of the pipes, such as diameter, wall thickness, and length, using specialized tools and equipment. By comparing these measurements against the specified tolerances, any deviations can be identified, and necessary corrective actions can be taken. Another important quality control step is hydrostatic pressure testing. In this test, the pipes are subjected to internal pressure that is higher than their intended operating pressure. This ensures that the pipes can withstand the required pressure without any leakage or failure. The test involves filling the pipes with water and gradually increasing the pressure, while closely monitoring for any signs of leakage or deformation. Furthermore, ductile iron pipes undergo various mechanical tests, such as tensile strength testing and impact testing, to evaluate their mechanical properties. These tests involve applying controlled forces or impacts to the pipes and measuring their response. By doing so, the strength, toughness, and durability of the pipes can be assessed, ensuring they meet the necessary requirements. Lastly, metallurgical examinations are conducted to analyze the microstructure of the ductile iron pipes. This involves taking samples from the pipes and using microscopy techniques to examine the grain structure, phase distribution, and any potential defects at a microscopic level. This helps in identifying 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 involves a combination of visual, dimensional, hydrostatic, mechanical, and metallurgical tests. These quality control measures help ensure that the pipes meet the required standards, providing reliable and durable infrastructure for various applications.

Q: Can ductile iron pipes be used for trenchless installations?: Yes, ductile iron pipes can be used for trenchless installations. Trenchless methods such as horizontal directional drilling (HDD) and pipe bursting have become popular alternatives to traditional open-cut trenching for installing underground utilities. Ductile iron pipes are suitable for trenchless installations due to their strength, durability, and flexibility. They can withstand the forces involved in HDD and pipe bursting processes without compromising their structural integrity. Additionally, ductile iron pipes have excellent resistance to corrosion, making them a reliable choice for trenchless applications.

Q: Are ductile iron pipes suitable for use in brewery facilities?: Yes, ductile iron pipes are suitable for use in brewery facilities. Ductile iron pipes are durable, corrosion-resistant, and can withstand high-pressure applications, making them ideal for transporting water, steam, and other fluids within brewery facilities. Additionally, the smooth interior surface of ductile iron pipes minimizes friction and prevents the build-up of sediments or organic materials, ensuring the purity and quality of the beer being produced.

Q: What is the typical lifespan of ductile iron pipes?: The typical lifespan of ductile iron pipes can vary depending on various factors such as the quality of the pipes, the environmental conditions, and the maintenance practices. However, on average, ductile iron pipes have a lifespan of around 75 to 100 years. This makes them a durable and long-lasting option for water and sewage transportation systems. With proper installation and regular maintenance, these pipes can withstand corrosion, pressure, and other external factors, ensuring their longevity and reliability. Additionally, advancements in coatings and linings have further enhanced the lifespan of ductile iron pipes, making them an excellent choice for infrastructural projects.

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