DUCTILE IRON PIPE C DN 80

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: -

Supply Capability:: 30000Tons m/month

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CNBM ductile iron pipe ranges from DN80-DN1600mm (T-Type, Class K9), effective length 6m, comply with ISO2531 Standard

Company Profile

CNBM International Corporation is the leading production base and renowned supplier of Ductile Iron Water Pipe systems of both potable and waste water in China. We are constantly looking to develop high quality products to ensure the longest service life and wonderful performance.

CNBM Pipelines regard quality as the essential factor leading to successful business. Every pipe is tested in accordance with BS EN545 (water application) or BS EN598 (sewer application). CNBM Pipelines products comply with and are tested according to the relevant European and International Standards. Our pipes are manufactured under the quality management system BS EN ISO 9001. After years of efforts, CNBM Pipelines has built up great reputation in terms of quality and service among customers worldwide

Product Introduction

CNBM ductile iron pipe ranges from DN80-DN1600mm (Tyton, T-Type, Class K7/K8/K9), effective length: 6m, complying with BS EN545/EN598/ISO2531/BS4772.

Specification& Payment terms

Internal lining: Pipes shall have an internal cement mortar lining in acc with ISO4179.

External coating: Pipes shall be externally coated with metallic zinc spray plus a further layer of resin painting to ISO8179.

Gasket: 100% SBR/NBR/EPDM gasket in accordance with ISO4633.

Packing: Pipes from DN100 to DN300 be bundled with steel belts, the others are in bulk.

Payment term: By 30% T/T advance payment + 70% Irrevocable L/C at sight.
Packing: In bulk vessel or in container.

Q: What are the common methods for cutting ductile iron pipes?: Some common methods for cutting ductile iron pipes include using a handheld reciprocating saw with a metal-cutting blade, using a portable bandsaw, using a chop saw with a diamond-tipped blade, and using a pipe cutter specifically designed for ductile iron pipes. Additionally, some professionals may also use oxy-fuel or plasma cutting methods for larger diameter pipes.

Q: What's the difference between grey cast iron pipe and ductile iron pipe?: Ductile iron is close to medium carbon steel and is much cheaper. Vermicular graphite iron is the best, but grey iron is worse and white iron is the worst. Therefore, the quality of ductile iron pipe with better quality and price is superior to other cast iron pipe fittings.

Q: What are the different types of restrained joints for ductile iron pipe?: Ductile iron pipe has several types of restrained joints available to prevent pipe separation or movement caused by internal pressure, external forces, or ground movement. The commonly used restrained joints for ductile iron pipe are as follows: 1. Mechanical Restrained Joint: This joint employs mechanical devices like bolts, nuts, and gaskets to secure the pipe. It typically consists of a gland, a gland follower, and a restraint ring. The gland and gland follower compress the gasket against the pipe, while the restraint ring provides additional support and resistance against movement. 2. Push-on Restrained Joint: This joint uses a rubber gasket that compresses when the two pipe ends are pushed together. The gasket not only provides a tight seal but also acts as a restraint against movement. Some push-on restrained joints may include additional mechanical devices to enhance the restraining capability. 3. Restrained Flange Joint: This joint combines the characteristics of a flanged joint and a restrained joint. It involves a flanged pipe end that is bolted to a flange on another pipe or fitting. The bolts and nuts offer the mechanical restraint, while the flange connection ensures a secure and leak-free joint. 4. Restrained Coupling Joint: This joint is a variation of the mechanical restrained joint. It utilizes a coupling that is either bolted or clamped around the pipe ends to provide the necessary restraint. The coupling may also have a gasket to ensure a tight seal. 5. Restrained Socket Joint: This joint is similar to the push-on restrained joint, but it incorporates additional mechanical devices to enhance the restraining capability. The socket end of the pipe is typically designed to receive a pipe spigot, which is then secured using bolts, clamps, or other mechanical devices. These diverse types of restrained joints for ductile iron pipe offer different levels of restraint and are chosen based on the specific requirements of the application. They guarantee the stability and integrity of the pipeline system, minimizing the risk of leaks, pipe separation, or movement.

Q: How is ductile iron pipe tested for quality?: Extensive quality testing is carried out on ductile iron pipe to ensure its performance and reliability in various applications. The pipe undergoes a series of steps to assess its physical and mechanical properties. The hydrostatic pressure test is one of the main tests performed on ductile iron pipe. This test involves subjecting the pipe to fluid pressure that exceeds its designed operating pressure. The purpose is to determine if the pipe can withstand internal pressure without any leakage or failure. The pipe is filled with water or another suitable fluid, and the pressure is gradually increased to the required level. During this test, the pipe is carefully inspected for any signs of leakage or deformation. Another essential 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 important properties such as the pipe's ultimate tensile strength, yield strength, and elongation. The Charpy test is used to assess the pipe's impact resistance. In this test, a notched sample is struck with a swinging pendulum to measure the amount of energy absorbed by the pipe. It helps determine if the pipe can withstand sudden impacts or loads without fracturing. In addition to these tests, the pipe also undergoes various non-destructive tests, including ultrasonic testing, magnetic particle inspection, and visual inspection. These tests are crucial in detecting any internal or external defects, cracks, or abnormalities that could compromise 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 necessary specifications and standards for its intended application. Overall, the testing process for ductile iron pipe is thorough and stringent. Its purpose is to guarantee the pipe's quality, durability, and overall performance in safely and efficiently delivering water, wastewater, or other fluids.

Q: The difference between spheroidal graphite cast iron pipe and HDPE water supply pipe: Because the HDPE pipe flexibility is good, in the face of obstacles or trench excavation in straight pipe laying conditions can not directly, but the ductile iron pipe can not, it is sometimes necessary to use the words such as elbow or tube fittings to connect the transition. In this way, the HDPE pipe is superior to the ductile iron pipe in the pipe fittings.

Q: What are the different corrosion protection options for ductile iron pipe?: There are several corrosion protection options available for ductile iron pipe to ensure its longevity and durability. These options include: 1. Cement Mortar Lining: This involves coating the inner surface of the pipe with a layer of cement mortar, which acts as a barrier between the pipe and corrosive elements in the water or soil. Cement mortar lining provides excellent corrosion resistance and can last for several decades. 2. Polyethylene Encasement: This method involves wrapping the ductile iron pipe with a layer of polyethylene material. The polyethylene acts as a physical barrier, protecting the pipe from external corrosive elements. Polyethylene encasement is commonly used in aggressive soil conditions and can offer long-lasting protection. 3. Internal and External Coatings: Various types of coatings can be applied to the inner and outer surfaces of the ductile iron pipe to provide corrosion resistance. These coatings can be epoxy, polyurethane, or fusion-bonded epoxy (FBE) coatings. These coatings create a barrier between the pipe and the surrounding environment, preventing corrosion. 4. Cathodic Protection: This method involves using an electrical current to protect the pipe from corrosion. Cathodic protection systems can be either galvanic (sacrificial anode) or impressed current systems. These systems direct the flow of electrons to prevent the oxidation of the ductile iron pipe. 5. Zinc Coating: Zinc coating, also known as galvanizing, involves applying a layer of zinc to the surface of the ductile iron pipe. The zinc acts as a sacrificial anode, corroding instead of the iron pipe. Zinc coating provides effective corrosion protection, particularly in soil conditions with low resistivity. It's important to note that the choice of corrosion protection option for ductile iron pipes depends on various factors such as the environment, water chemistry, soil conditions, and expected service life. Consulting with corrosion protection specialists and engineers can help in selecting the most suitable option for specific applications.

Q: Are there any special coatings or linings available for ductile iron pipe?: Yes, there are special coatings and linings available for ductile iron pipe. These coatings and linings are applied to the internal and/or external surfaces of the pipe to provide protection against corrosion and extend the lifespan of the pipe. Some common coatings and linings used for ductile iron pipe include cement mortar lining, polyethylene encasement, epoxy coating, and polyurethane lining. These coatings and linings are designed to prevent the pipe from corroding when in contact with various substances such as water, chemicals, and soil. The specific coating or lining used depends on the application and the environment in which the pipe will be installed.

Q: Can ductile iron pipes be used for rainwater harvesting systems?: Yes, ductile iron pipes can be used for rainwater harvesting systems. Ductile iron pipes are known for their durability and strength, making them suitable for various applications, including rainwater collection and storage. They can effectively transport rainwater from collection points to storage tanks, ensuring a reliable and efficient rainwater harvesting system.

Q: Can ductile iron pipes be used in areas with high levels of groundwater contamination?: Areas with high levels of groundwater contamination can make use of ductile iron pipes. Ductile iron, known for its strength and durability, is resistant to corrosion, making it suitable for various environments, including those with contaminated groundwater. It provides a high level of resistance to chemicals and can withstand the corrosive effects of contaminants that may be present in the groundwater. Furthermore, ductile iron pipes possess a protective lining, further enhancing their corrosion resistance. However, it is important to consider that the suitability of ductile iron pipes in such areas relies on the specific nature and concentration of contaminants in the groundwater. Seeking advice from experts and adhering to local regulations and industry standards is essential to ensure the proper selection and installation of pipes in areas with high levels of groundwater contamination.

Q: Can ductile iron pipes be used for underground cooling water systems?: Yes, ductile iron pipes can be used for underground cooling water systems. Ductile iron is known for its strength, durability, and corrosion resistance, making it suitable for various applications, including underground installations. It can withstand the pressure and temperature requirements of cooling water systems, providing a reliable and long-lasting solution.

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