DUCTILE IRON PIPE DN125 K8

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 20 m.t.

Supply Capability:: -

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Specification:

1) The standard of pipe: ISO2531:1998, K9

2) Effective length: 6m

3) Inner cement line: Portland cement line as per ISO4179

4) Zinc coating: at least 130g/m² as per ISO8179

5) Bitumen painting: at least 70um as per ISO8179

6) With 100% quantity of NBR ring, or SBR ring, or EPDM ring as per ISO4633

7) DN80mm-800mm

8) High strength, lighter than grey iron, good corrosion resistance, no furring, small flow resistance, easy fixing, long life tome about 100 yeas

9) Produced by Hangzhou chunfeng machine

10) Checked by automatic inspection equipment

11) Composition:

Chemical composition
Chemical composition	Ductile Cast Iron Pipe (%)	Grey iron pipe (%)	Steel pipe (%)
C	3.5-4.0	3.2-3.8	0.1-0.2
Si	1.9-2.6	1.4-2.2	0.15-0.4
Mn	0.15-0.45	0.4-0.6	0.3-0.6
P	≤0.06	≤0.3	0.02-0.03
S	≤0.02	≤0.1	0.02-0.03
Mg	0.03-0.06

12) Feature:

Mechanical properties
	Ductile Cast Iron Pipe	Grey Iron Pipe	Steel Pipe
Tensile Strength(Mpa)	≥420	150-260	≥400
Yield Strength(Mpa)	≥300	No Confirmation	No Confirmation
Bending Strength(Mpa)	≥590	200-360	≥400
Elongation (%)	≥10	Neglected	≥18
Brinell Hardness(HBS)	≤230	≤230	About 140

13) T type mechanical joint

14) Packing: in bulk or container

15) Additional : Ductile iron pipe fittings accoding t ISO2531/EN545/EN598

Gate valve according to DIN standard, BS Standard

Other accessories related to Water field

Q: Do ductile iron pipes require internal lining for potable water applications?: Yes, ductile iron pipes do require internal lining for potable water applications. This is because the iron used in these pipes can react with the water and potentially contaminate it. Internal lining acts as a barrier between the water and the iron, preventing any chemical reactions and ensuring the water remains safe for consumption.

Q: What are the common methods for cutting ductile iron pipes?: There are several common methods for cutting ductile iron pipes, depending on the specific requirements and tools available. 1. Hand Saw: A hand saw with a carbide-tipped blade is commonly used for cutting smaller diameter ductile iron pipes. This method requires physical effort and may be time-consuming. 2. Reciprocating Saw: A reciprocating saw with a diamond or carbide abrasive blade is a more efficient option for cutting ductile iron pipes. This power tool allows for faster cutting and requires less physical effort. 3. Cut-Off Saw: A cut-off saw, also known as a chop saw or disc cutter, equipped with a diamond or abrasive blade is a popular method for cutting ductile iron pipes. This power tool provides precise and fast cuts, making it suitable for both small and large diameter pipes. 4. Band Saw: A band saw with a bi-metal or carbide-tipped blade is commonly used for cutting larger diameter ductile iron pipes. This method allows for clean and precise cuts, but it may require specialized equipment and expertise. 5. Grinding Wheel: In some cases, a grinding wheel with a diamond or abrasive disc can be used to cut ductile iron pipes. This method is suitable for smaller diameter pipes or when other cutting tools are not available. It is important to note that regardless of the method used, proper safety precautions should always be followed, including wearing appropriate protective gear and using clamps or vices to secure the pipe during cutting. Additionally, it is recommended to consult with professionals or manufacturers' guidelines for specific recommendations on cutting ductile iron pipes.

Q: Are ductile iron pipes suitable for pressure reducing valve stations?: Yes, ductile iron pipes are suitable for pressure reducing valve stations. Ductile iron pipes are known for their strength and durability, which makes them an ideal choice for applications involving high pressure. Pressure reducing valve stations are designed to regulate and reduce the pressure of a fluid or gas in a pipeline system. Ductile iron pipes can handle the pressure exerted by the fluid or gas, ensuring a reliable and efficient operation of the pressure reducing valve station. Additionally, ductile iron pipes have excellent resistance to corrosion, which is crucial in maintaining the integrity of the pipeline system and preventing leaks or failures. Overall, ductile iron pipes provide the necessary strength, durability, and corrosion resistance required for pressure reducing valve stations.

Q: How do ductile iron pipes perform in cold weather conditions?: Ductile iron pipes perform well in cold weather conditions due to their exceptional strength and durability. Unlike other materials, ductile iron pipes have a high resistance to freeze-thaw cycles, preventing them from cracking or breaking in freezing temperatures. Additionally, the material's flexibility allows for minimal expansion and contraction, ensuring stability even in extreme cold. Overall, ductile iron pipes are a reliable choice for cold weather environments.

Q: How are ductile iron pipes tested for quality?: Ductile iron pipes are tested for quality using various methods to ensure they meet the required standards and specifications. One common test is the hydrostatic pressure test, which involves subjecting the pipes to water or other liquid under high pressure to check for any leaks or weaknesses. The pipes are typically filled with water and the pressure is gradually increased to a predetermined level. This test helps to identify any potential defects in the pipes that could compromise their integrity. Another important quality test for ductile iron pipes is the tensile test. This test involves pulling a sample of the pipe until it breaks, measuring the amount of force applied and the elongation of the sample. By doing so, the tensile strength and ductility of the pipe can be determined, ensuring it can withstand the 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 any visible defects such as cracks, voids, or surface irregularities. Dimensional checks ensure that the pipes meet the specified dimensions and tolerances. Furthermore, ductile iron pipes are often subjected to corrosion resistance tests. This is done by exposing the pipes to different corrosive environments, such as saltwater or acidic solutions, to evaluate their resistance to corrosion. This is crucial as it determines the durability and longevity of the pipes, especially in applications where they may be exposed to harsh conditions. Overall, ductile iron pipes undergo rigorous testing to ensure their quality and performance. These tests help guarantee that the pipes meet the required standards, are safe to use, and are capable of withstanding the expected loads and environmental conditions they will encounter in their intended applications.

Q: What is the expected joint flexibility of ductile iron pipes?: The expected joint flexibility of ductile iron pipes is typically high, as they are designed to accommodate slight movements and stresses caused by ground settlement or thermal expansion and contraction.

Q: What are the different methods for cutting ductile iron pipe?: There are several different methods for cutting ductile iron pipe, depending on the specific requirements and constraints of the project. Some common methods include: 1. Manual Cutting: This method involves using a handheld saw or grinder with an abrasive cutting wheel to cut through the ductile iron pipe. It is a simple and relatively inexpensive method, but it can be labor-intensive and time-consuming for larger pipe sizes. 2. Mechanical Cutting: Mechanical cutting methods involve using specialized machinery to cut through the ductile iron pipe. This can include bandsaws, pipe cutters, or hydraulic cutting machines. These machines can provide faster and more precise cuts, especially for larger pipe sizes. However, they can be more expensive and require skilled operators. 3. Torch Cutting: Torch cutting, also known as oxyfuel cutting, involves using a torch to heat the ductile iron pipe and then introducing a high-pressure oxygen stream to create a chemical reaction that cuts through the metal. This method is effective for cutting thick-walled ductile iron pipe, but it can generate a significant amount of heat and sparks, requiring proper safety precautions. 4. Plasma Arc Cutting: Plasma arc cutting utilizes a high-velocity jet of ionized gas (plasma) to melt and cut through the ductile iron pipe. This method is ideal for cutting through thick-walled pipes where precision and efficiency are required. However, it can be more expensive and may require specialized equipment and training. 5. Waterjet Cutting: Waterjet cutting uses a high-pressure jet of water mixed with an abrasive material to cut through the ductile iron pipe. This method is highly precise and does not generate heat or sparks, making it suitable for cutting in sensitive environments. However, it can be slower and more expensive compared to other cutting methods. It is important to consider factors such as pipe size, project requirements, budget, and safety when selecting the appropriate method for cutting ductile iron pipe. Consulting with professionals or experts in the field can help determine the most suitable method for a specific project.

Q: What is the expected sound transmission loss of ductile iron pipes?: The expected sound transmission loss of ductile iron pipes can vary depending on various factors such as pipe thickness, diameter, and the surrounding environment. Generally, ductile iron pipes have good soundproofing properties due to their dense and heavy construction. They are typically designed to minimize noise transmission and vibration. In terms of sound transmission loss, ductile iron pipes can provide significant attenuation of noise. The material's inherent density and high mass make it effective in blocking sound waves and reducing their transmission. However, it is important to note that the sound transmission loss of ductile iron pipes may not be as high as other specialized soundproofing materials such as acoustic insulation or double-wall piping systems. To accurately determine the expected sound transmission loss of ductile iron pipes in a specific application, it is advisable to consult the manufacturer's specifications or conduct acoustic tests in accordance with relevant standards such as ASTM E90. These tests can provide precise data on the sound transmission loss values of ductile iron pipes under various conditions, helping to ensure proper noise control and acoustic performance in specific installations.

Q: Can ductile iron pipes be used in areas with high water velocity?: Yes, ductile iron pipes can generally be used in areas with high water velocity. Ductile iron is known for its strength and durability, making it suitable for various applications, including high-velocity water flow. However, it is important to consider factors like pipe size, wall thickness, and proper installation techniques to ensure the pipes can handle the specific velocity conditions effectively.

Q: What is the difference between cast iron pipe and seamless steel pipe and galvanized steel pipe?: Galvanized steel pipe: divided into cold galvanized steel pipe, hot galvanized steel pipe, cold galvanized steel pipe has been banned, and the latter is also advocated by the state for the time being. In 60s and 70s, developed countries began to develop new types of pipes, and galvanized pipes were banned. China's Ministry of construction and other four ministries also issued a civilization, indeed from two, 000 years since the galvanized pipe as a water supply pipe, the New District cold water pipe has rarely used galvanized pipe, and some of the hot water pipe is galvanized pipe. Hot dip galvanized steel pipe is widely used in fire, power and highway.

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