K Type Ductile Iron Pipe DN300 Socket spigot pipe

K Type Ductile Iron Pipe DN300 Socket spigot pipe

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 200 m.t

Supply Capability:: 30000 m.t/month

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Specification:

1) The standard of pipe: ISO2531:1998, EN545:2006，K9 K8

2) Effective length: 6m/5.7m

3) Inner cement line: Portland cement lineas per ISO4179

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

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

6)With 102% quantity of NBR, SBR, or EPDM ring asper ISO4633

7) DN80-DN1200

8) Highstrength, lighter than grey iron, good corrosion resistance, no furring, smallflow resistance, easy fixing, long life tome about 100 yeas

9)Checked by automatic inspection equipment

10) 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

11) 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

12) T type mechanical joint

13) Packing: in bulk or container

PACKING: 1) Pipesare bundled together with the steel belt.

2) Wooden pieces are put between the pipes.

Q: Are ductile iron pipes prone to leakage?: Ductile iron pipes are renowned for their leak resistance, owing to their durability and strength. Unlike PVC or cast iron pipes, this type of pipe is less susceptible to leaks. It is designed to endure high pressure and heavy loads, making it suitable for a range of applications such as water supply, sewage systems, and industrial pipelines. The leak resistance of ductile iron pipes can be attributed to their unique properties, including flexibility and shock absorption. With high tensile strength, these pipes can withstand internal and external pressure without cracking or breaking. Moreover, ductile iron pipes boast leak-proof joints. These joints are typically sealed with rubber gaskets and connected using methods like push-on joints or restrained joints with mechanical couplings. These joint designs ensure a secure and watertight connection, minimizing the risk of leaks. Nevertheless, under certain circumstances, ductile iron pipes can still experience leaks. Factors like age, corrosion, improper installation, or ground movement can contribute to leak development over time. Regular maintenance and inspections are crucial in detecting and resolving potential issues that may lead to leaks. In summary, while ductile iron pipes are generally resistant to leaks and renowned for their reliability, proper installation, regular maintenance, and timely repairs are vital to maximize their lifespan and prevent potential leaks.

Q: Are ductile iron pipes resistant to alkali attacks?: Ductile cast iron, commonly used in ductile iron pipes, has demonstrated its remarkable resistance to alkali attacks. This is achieved through the inclusion of specific chemical compositions that provide exceptional corrosion resistance. Alkali attacks, which arise from the interaction between alkaline substances and metals or other materials, are effectively countered by the dense and protective oxide film present on both the inner and outer surfaces of ductile iron pipes. This oxide film forms naturally over time and possesses a composition and structure that offer excellent resistance to alkali attacks. Moreover, to further enhance their ability to withstand corrosion and chemical reactions, ductile iron pipes are frequently coated with various protective layers, such as epoxy or zinc. It should be emphasized that although ductile iron pipes exhibit a high resistance to alkali attacks, the severity and concentration of the alkali substances can still impact their overall performance. In extreme instances, where there are exceedingly high concentrations of alkali substances or prolonged exposure to aggressive alkaline environments, some damage may occur to the protective layers of the pipes. Nonetheless, within normal conditions and acceptable parameters, ductile iron pipes are widely regarded as possessing outstanding resistance to alkali attacks.

Q: Can ductile iron pipe be used for horizontal directional drilling?: HDD, a trenchless method for installing underground utilities like pipelines, can indeed utilize ductile iron pipe. The choice of ductile iron pipe in HDD projects stems from its remarkable strength, durability, and ability to withstand the strains and stresses associated with directional drilling. It exhibits exceptional resistance to external loads and can endure the bending and pulling forces involved in HDD installations. Nevertheless, it is crucial to consider variables like pipe diameter, wall thickness, and soil conditions when selecting the appropriate pipe for HDD projects. Furthermore, it is imperative to adhere to proper installation techniques and take precautionary measures to ensure the long-term performance and integrity of ductile iron pipe in HDD applications.

Q: Can ductile iron pipes be used for both water and wastewater applications?: Yes, ductile iron pipes can be used for both water and wastewater applications. Ductile iron pipes are known for their durability, strength, and corrosion resistance, making them suitable for a wide range of applications including water distribution, sewage systems, and wastewater treatment plants. These pipes are designed to withstand high pressure and are capable of handling the flow of both water and wastewater. Additionally, ductile iron pipes have a long lifespan, reducing the need for frequent replacements and maintenance, which makes them a cost-effective choice for both water and wastewater applications.

Q: How much water seepage is allowed in the water pressure test for water hose DN300?: For water polo hose DN300, hydraulic pressure test allows water penetration to be 17.60 m3 / (24h km).The water pressure test of the indoor water supply pipeline must meet the design requirements. When the design is not specified, the test pressure of all kinds of material supply piping system is 1.5 times of the work pressure, but not less than 0.6MPa.

Q: How many degrees can the ductile iron pipe be each?: Although ductile iron has a certain plasticity, it should not be bent in use

Q: How is ductile iron pipe tested for quality?: Ductile iron pipe is extensively tested for quality to ensure its performance and reliability in various applications. The testing process involves several steps to assess the physical and mechanical properties of the pipe. One of the primary tests conducted on ductile iron pipe is the hydrostatic pressure test. This test involves subjecting the pipe to fluid pressure higher than its designed operating pressure to determine its ability to withstand internal pressure without leakage or failure. The pipe is filled with water or another suitable fluid, and pressure is gradually increased to the required level. The pipe is inspected for any signs of leakage or deformation during this test. Another crucial test is the tensile strength test, which measures the pipe's ability to resist pulling or stretching forces. A sample of the pipe is pulled until it breaks, and the maximum force applied during the test is recorded. This test helps determine the pipe's ultimate tensile strength, yield strength, and elongation properties. Ductile iron pipe is also tested for its impact resistance through the Charpy test. This test involves striking a notched sample with a swinging pendulum to measure the amount of energy absorbed by the pipe. It helps assess the pipe's ability to withstand sudden impacts or loads without fracturing. Additionally, the pipe undergoes various non-destructive tests, including ultrasonic testing, magnetic particle inspection, and visual inspection. These tests help detect any internal or external defects, cracks, or abnormalities that may affect the pipe's structural integrity. Furthermore, chemical analysis and metallographic examination are performed to evaluate the chemical composition and microstructure of the ductile iron pipe. These tests ensure that the pipe meets the required specifications and standards for its intended application. Overall, the testing process for ductile iron pipe is comprehensive and rigorous, aiming to guarantee its quality, durability, and overall performance in delivering water, wastewater, or other fluids safely and efficiently.

Q: What are the disadvantages of using ductile iron pipes?: One disadvantage of using ductile iron pipes is their susceptibility to corrosion. Over time, exposure to moisture and various chemicals can cause the pipes to deteriorate and develop leaks. Another disadvantage is their relatively high cost compared to other pipe materials, such as PVC or HDPE. Additionally, ductile iron pipes are heavy and require specialized equipment for installation, which can increase labor and transportation costs.

Q: What is the typical weight of ductile iron pipes?: The typical weight of ductile iron pipes can vary depending on the size and specifications, but they generally range from a few hundred pounds to several thousand pounds per linear foot.

Q: How are ductile iron pipes protected against erosion caused by high-velocity flow?: Various methods and techniques are used to protect ductile iron pipes from erosion caused by high-velocity flow. One effective method involves applying protective coatings on the inner surface of the pipes. These coatings act as a barrier between the flowing water and the pipe material, minimizing the abrasive effects of the fast flow. Depending on the specific requirements of the application, coatings such as epoxy, polyurethane, or cement-mortar lining may be used. In addition, manufacturers often design the pipes with increased wall thickness in areas prone to erosion, such as bends or sections with high flow velocity. This additional thickness provides extra strength and resistance against erosion. Another technique used to safeguard ductile iron pipes from erosion is the implementation of flow control devices, such as flow deflectors or fittings that reduce velocity. These devices help redirect the flow and decrease its speed, thus minimizing the impact on the pipe walls. Regular maintenance and inspections are also vital to prevent erosion. By monitoring the condition of the pipes and identifying any early signs of erosion, appropriate measures can be taken to address the issue before it worsens. This may involve repairing or replacing damaged sections of the pipes and implementing erosion control measures like sediment filters or flow restrictors. Overall, a combination of protective coatings, design considerations, flow control devices, and proactive maintenance strategies are employed to ensure adequate protection of ductile iron pipes against erosion caused by high-velocity flow.

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