DUCTILE IRON PIPE DN900 K9

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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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

Q: How do ductile iron pipes handle soil movement?: Ductile iron pipes have the ability to handle soil movement well due to their flexible nature. They can withstand stress and strain caused by ground settlement, thermal expansion, and contraction, without cracking or breaking. The high tensile strength and elasticity of ductile iron allow it to adapt to shifting soil conditions, making it a reliable choice for underground installations.

Q: What are the different methods for tapping ductile iron pipe?: There are several methods for tapping ductile iron pipe, including hot tapping, mechanical tapping, and electrofusion tapping. Hot tapping involves drilling into the pipe while it is still in service and creating a connection without interrupting the flow. Mechanical tapping uses mechanical equipment to create a threaded or grooved connection on the pipe. Electrofusion tapping uses an electrofusion saddle to create a connection by fusing a fitting onto the pipe.

Q: What is the expected joint restraint method for ductile iron pipes?: The expected joint restraint method for ductile iron pipes is typically mechanical joint restraints, such as gland and follower glands or wedge-action restraints, which provide a secure and reliable connection while allowing for expansion and contraction of the pipes.

Q: What is the expected pressure rating of ductile iron pipes?: The expected pressure rating of ductile iron pipes can vary depending on various factors such as pipe diameter, wall thickness, and type of joint used for installation. However, generally speaking, ductile iron pipes are known for their high strength and durability, allowing them to withstand high pressure levels. In most cases, ductile iron pipes are designed and manufactured to meet or exceed the requirements of industry standards such as the American Water Works Association (AWWA) C151 or C115/A21.15. These standards specify the minimum pressure rating for ductile iron pipes, which typically range from 150 to 350 psi (pounds per square inch) for water transmission applications. It is important to note that the pressure rating also depends on the class of the pipe, which refers to the thickness of the pipe's wall. Typically, ductile iron pipes are available in different classes such as Class 50, Class 51, Class 52, etc. Each class has its own pressure rating, with higher classes offering greater strength and resistance to pressure. It is recommended to consult the manufacturer's specifications and guidelines for the specific ductile iron pipes being used to determine the exact pressure rating. It is also essential to consider other factors such as pipe support, installation methods, and operating conditions to ensure the safe and efficient operation of the ductile iron pipe system.

Q: What is the expected fatigue life of ductile iron pipes under cyclic loading?: The expected fatigue life of ductile iron pipes under cyclic loading can vary depending on various factors such as the material properties, design considerations, loading conditions, and maintenance practices. However, ductile iron pipes are generally known for their excellent fatigue resistance, and when properly designed and installed, they can have a long fatigue life of several decades or more.

Q: What are the different types of joints used with ductile iron pipe?: The different types of joints commonly used with ductile iron pipe include push-on joints, mechanical joints, restrained joints, flanged joints, and welded joints. Each type of joint offers different benefits and is used depending on the specific requirements of the installation.

Q: What is the typical wall thickness of ductile iron pipes?: The typical wall thickness of ductile iron pipes varies depending on the size and the intended use of the pipe. Generally, ductile iron pipes have a wall thickness ranging from 0.25 inches (6.35 mm) to 0.5 inches (12.7 mm). However, for larger diameter pipes or those used in high-pressure applications, the wall thickness can be even greater. It is important to consult industry standards and specific project requirements to determine the appropriate wall thickness for a ductile iron pipe.

Q: What is the expected pressure rating for ductile iron pipes?: The pressure rating for ductile iron pipes can differ based on factors like pipe diameter, wall thickness, and specific application. In general, ductile iron pipes are built to endure high-pressure situations. They are frequently utilized in water and wastewater systems, where they can normally manage pressures ranging from 150 psi to 350 psi or more. To ensure safe and dependable operation, it is crucial to refer to the manufacturer's specifications or relevant industry standards for precise pressure ratings based on pipe size and application.

Q: What is the minimum cover requirement for ductile iron pipes?: The minimum cover requirement for ductile iron pipes is typically specified by industry standards and local regulations, but it generally ranges from 2 to 5 feet depending on the pipe diameter and location.

Q: Luo what effect of ductile cast iron: Chromium can improve the hardness, strength and wear resistance of nodular iron, and increase bainite in bainite ductile iron.

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