Ductile Iron Pipe DN250

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Place of Origin:	China (Mainland)	Brand Name:	CMAX	Model Number:	T type / K type / Flange type
Length:	6m / 5.7m / Negotiable	Standard:	ISO2531 / EN545 / EN598	Application:	Potable / Sewage water
Diameter:	DN80~DN2200	Shape:	Round	Hardness:	230
Pipe Wall Thickness:	standard	Pull Strength:	420	Yield (≥ MPa):	300
Material:	Ductile Iron	Type:	Centrifugal ductile cast iron pipe	Certification:	ISO2531 / EN545 / EN598
Outer Diameter:	80-2200	Thickness:	standard	Specification:	DN80~DN2200

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Q:Ductile iron pipes lined with cement mortar in the water (living water, water in the 6.9-7.3) in the early pH, why pH increased? How to solve this problem?: The basic characteristic of ductile iron pipe of ordinary cement mortar lining the inner wall of the tube will make passivation, have antiseptic effect, but in the initial stage of using cement mortar lining will be the alkali component separation, so that the pH value of water increased to influence water quality

Q:Can ductile iron pipes be used for water supply in buildings?: Yes, ductile iron pipes can be used for water supply in buildings. Ductile iron pipes are known for their strength, durability, and corrosion resistance, making them suitable for carrying water in both residential and commercial structures. They have a long lifespan, high pressure rating, and can withstand various environmental conditions, making them a reliable choice for water distribution systems.

Q:Are ductile iron pipes suitable for use in paper mills?: Ductile iron pipes, known for their strength and durability, are well-suited for paper mills. With their excellent performance in various industrial settings, including paper mills, these pipes are able to withstand high-pressure systems and resist corrosion. This makes them suitable for transporting water, chemicals, and other fluids commonly used in paper mills. Moreover, the impact resistance of ductile iron pipes is advantageous in an environment with heavy machinery and equipment. In summary, ductile iron pipes are a dependable and enduring choice for paper mills, thanks to their strength, durability, corrosion resistance, and ability to handle high-pressure systems.

Q:What is the expected fire resistance of ductile iron pipes?: The fire resistance of ductile iron pipes can vary based on factors such as pipe wall thickness, installation quality, and surrounding conditions. However, in general, ductile iron pipes exhibit high fire resistance due to their durable and heat-resistant composition. Ductile iron is created by adding a small amount of magnesium to cast iron, which enhances its strength and flexibility. This results in ductile iron pipes being less prone to cracking or breaking under high temperatures compared to materials like PVC or HDPE pipes. Regarding fire resistance, ductile iron pipes can endure high temperatures for a prolonged period without significant structural damage. They have undergone testing and have been proven to maintain their integrity in fire situations for 2-4 hours, depending on the specific pipe design and installation. It is important to note that while ductile iron pipes possess high fire resistance, they are not fireproof. In the event of a fire, it is vital to adhere to proper fire safety procedures and seek advice from professionals to ensure the safety of the system and surrounding infrastructure.

Q:What are the different methods for tapping ductile iron pipe?: There are several different methods for tapping ductile iron pipe, depending on the specific requirements of the project. Some of the common methods used include: 1. Mechanical Tapping: This method involves using a mechanical tapping machine to create a hole in the ductile iron pipe. The machine is equipped with a cutting tool that rotates and cuts through the pipe wall, creating a clean hole. This method is commonly used for smaller diameter pipes and is relatively quick and efficient. 2. Hot Tapping: Hot tapping involves creating a hole in a pressurized ductile iron pipe while it is still in service. This method requires specialized equipment and expertise to ensure safety and maintain the integrity of the pipe. Hot tapping is commonly used when it is not feasible or practical to shut down the pipeline for maintenance or repair work. 3. Electrofusion Tapping: Electrofusion tapping is a method that uses an electrofusion saddle and fitting to create a branch connection on a ductile iron pipe. This method involves welding a fitting onto the pipe using an electrofusion machine, which creates a secure and leak-proof connection. Electrofusion tapping is commonly used for larger diameter pipes and is suitable for both water and gas applications. 4. Saddle Tapping: Saddle tapping involves attaching a saddle or clamp onto the ductile iron pipe and drilling a hole through the saddle into the pipe. The saddle is then equipped with a threaded outlet for connecting a branch line. This method is commonly used for smaller diameter pipes and is relatively simple and cost-effective. 5. Split Sleeve Tapping: Split sleeve tapping is a method that involves cutting a section out of the ductile iron pipe and installing a split sleeve over the cut. The split sleeve is then bolted together, creating a secure and watertight connection. This method is commonly used for larger diameter pipes and is suitable for both water and gas applications. It is important to note that the selection of the tapping method should be based on factors such as the pipe size, pressure rating, required branch connection, and the specific requirements of the project. Consulting with a professional engineer or tapping specialist is recommended to ensure the proper method is used for tapping ductile iron pipe.

Q:Can ductile iron pipes be used in coastal or marine environments?: Yes, ductile iron pipes can be used in coastal or marine environments. Ductile iron is a type of cast iron that has been treated with magnesium to give it enhanced strength, ductility, and resistance to corrosion. This makes it suitable for use in environments with high levels of moisture, such as coastal or marine areas. Coastal and marine environments are known for their high levels of saltwater, which can cause corrosion in metal pipes. However, ductile iron pipes have excellent corrosion resistance due to their protective coating. This coating acts as a barrier between the pipe and the corrosive elements present in saltwater, preventing the formation of rust and extending the lifespan of the pipes. Furthermore, ductile iron pipes can withstand the high pressures and stresses associated with coastal and marine applications. They have a high tensile strength, allowing them to handle the weight of soil, rocks, and other materials that may be present in these environments. Additionally, ductile iron pipes are resistant to damage from external forces, such as waves or debris, making them a reliable choice for coastal or marine projects. In summary, ductile iron pipes are a suitable choice for coastal or marine environments due to their corrosion resistance, high tensile strength, and durability. They can reliably transport water or other fluids in these challenging environments while maintaining their structural integrity over an extended period of time.

Q:Are there any specific standards or regulations for ductile iron pipe?: Yes, there are specific standards and regulations for ductile iron pipe. The American Water Works Association (AWWA) has established standards such as AWWA C151 for ductile iron pipe, which outlines the minimum requirements for manufacturing, testing, and installation. Additionally, various countries and regions may have their own specific regulations and standards for ductile iron pipe to ensure its quality and performance in different applications.

Q:Are ductile iron pipes resistant to soil movement?: Yes, ductile iron pipes are generally resistant to soil movement due to their high tensile strength and flexibility. They can withstand ground settlement, soil shifting, and other forms of soil movement without experiencing significant damage or failure.

Q:What is the minimum pipe diameter of cast iron pipe?: Nominal diameter of continuous grey cast iron pipe is 75~1200 mm, minimum 75 mm, maximum 1200 mm.

Q:Why is the sound speed of nodular cast iron lowered after heat treatment?: Sound travels faster in a solid than it does in a liquidOr so, after heating, the intermolecular repulsion decreases, so that the same potential energy conduction requires molecules to move more distances, making the transmission slower

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