DUCTILE IRON PIPE DN250 K7 CLASS

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

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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:Are ductile iron pipes suitable for sewer force mains?: Sewer force mains can indeed make use of ductile iron pipes. Ductile iron, a variant of cast iron, possesses a higher degree of strength and flexibility in comparison to conventional cast iron pipes. This quality renders it suitable for applications where pipes must endure high pressure and heavy loads, such as sewer force mains. Ductile iron pipes exhibit exceptional resistance against corrosion and boast impressive durability, which proves vital for sewer systems that face exposure to various corrosive substances and challenging environments. Moreover, these pipes possess the ability to absorb vibrations and shocks, thereby reducing the risk of pipe failures caused by external forces. Furthermore, ductile iron pipes possess a renowned reputation for their lengthy service life, frequently extending beyond 100 years. As a result, they constitute a cost-effective choice for sewer force mains, necessitating minimal maintenance and replacement throughout their lifespan. In conclusion, ductile iron pipes offer a dependable and long-lasting solution for sewer force mains, delivering the requisite strength, flexibility, and resistance to corrosion to ensure the efficiency and durability of sewer systems.

Q:Can ductile iron pipes be used for underground irrigation systems?: Indeed, underground irrigation systems can utilize ductile iron pipes. These pipes find extensive use in a multitude of applications, such as water supply and distribution systems. Renowned for their robustness, durability, and resistance to corrosion, ductile iron pipes prove ideal for subterranean installations. Moreover, they possess exceptional pressure-bearing capabilities, enabling them to endure the elevated pressures commonly associated with irrigation systems. Nevertheless, it remains crucial to guarantee appropriate installation and maintenance to avert any potential harm or leakage within the system.

Q:Can ductile iron pipes be used for underground storage of hazardous materials?: No, ductile iron pipes are not recommended for underground storage of hazardous materials due to potential corrosion issues and the risk of leaks or contamination.

Q:How do ductile iron pipes handle thermal expansion and contraction?: Ductile iron pipes are specifically designed to handle thermal expansion and contraction effectively. Due to their unique composition and structure, which includes graphite nodules in the iron matrix, these pipes have the ability to accommodate temperature variations without significant damage or distortion. The graphite nodules act as flexible joints, allowing the pipe to expand and contract without cracking or breaking. This characteristic makes ductile iron pipes highly resistant to the stresses caused by thermal fluctuations, ensuring their long-term durability in various temperature environments.

Q:What is the K9 standard pressure for ductile iron pipes?: The annealed ductile iron pipe is composed of ferrite and pearlite. The mechanical properties of the ductile iron pipe are better. Ductile iron pipes mainly called centrifugal ductile iron pipe, it has the properties of nature, iron and steel, excellent corrosion resistance, good ductility, good sealing effect, simple installation, mainly for municipal, industrial and mining enterprises, water supply, gas, oil etc.. Water supply pipe is the first choice, with high cost performance. Compared with the PE pipe, from the installation time, ductile pipe PE pipe installation is simple and rapid, and after the installation of internal and external pressure bearing better tightness and corrosion resistance; from the point of view, ductile pipe sealing better after installation, but also can improve the corrosion resistance of corrosion protection through a variety of means; from the hydraulic performance, because ductile pipe specifications generally refers to the inner diameter of PE pipe diameter specifications generally refers to the same specifications, because under the condition of ductile pipe can achieve greater runoff; from the installation and maintenance cost, ductile pipe have more favorable price. The main components of ductile iron pipes are carbon, silicon, manganese, sulfur, phosphorus and magnesium. The inner wall of zinc spray, anti-corrosion materials such as cement mortar.

Q:How do ductile iron pipes handle heavy traffic loads?: Ductile iron pipes are extremely durable and can handle heavy traffic loads with ease. This is due to their exceptional strength and flexibility. The composition of ductile iron, which includes graphite nodules, allows the material to be more flexible than traditional cast iron pipes. This flexibility enables the pipes to withstand heavy traffic loads, including the weight of vehicles passing over them. Additionally, ductile iron pipes have a high load-bearing capacity, which means they can support substantial weights without experiencing deformation or structural failure. This makes them suitable for use in areas with heavy traffic, such as highways, bridges, and industrial sites. Furthermore, ductile iron pipes have excellent resistance to external forces, such as vibrations and impacts. They can absorb and distribute these forces throughout the pipe network, preventing damage and maintaining structural integrity. In summary, ductile iron pipes are specifically designed to handle heavy traffic loads. Their strength, flexibility, and load-bearing capacity make them a reliable choice for infrastructure projects where durability and longevity are essential.

Q:Ductile iron and gray iron is what are the advantages and disadvantages of it: Comparison of ductile iron and cast iron (gray iron)Compared with cast iron, ductile iron has an absolute advantage in strength. The tensile strength of ductile iron is 60K, while the tensile strength of cast iron is only 31k. The yield strength of ductile iron is 40K, while the cast iron does not show yield strength, and eventually breaks. The strength to cost ratio of ductile iron is far superior to that of cast iron. Ductile iron is the same as cast iron in corrosion resistance.

Q:How are ductile iron pipes protected against root intrusion?: Diverse techniques and methods exist to safeguard ductile iron pipes from root intrusion. The application of root inhibitors or growth regulators is a commonly employed approach. These substances are typically injected into the surrounding soil, forming a barrier that restricts root growth near the pipes. This effectively prevents roots from penetrating the pipes and causing damage. Another method involves the utilization of physical barriers like root barriers or sleeves. These barriers are installed around the pipes to physically obstruct root access. Root barriers are typically constructed from materials such as plastic or metal, engineered to withstand the pressure exerted by growing roots. In addition, regular maintenance practices like periodic inspections and cleaning play a crucial role in preventing root intrusion. By consistently monitoring pipe conditions and removing any existing root masses, the risk of further intrusion can be minimized. It is important to recognize that preventative measures are more effective than reactive measures in protecting ductile iron pipes from root intrusion. Therefore, implementing proactive strategies during the installation phase, such as proper pipe bedding and alignment, can significantly reduce the likelihood of intrusion. Overall, a combination of chemical treatments, physical barriers, and appropriate maintenance practices greatly enhances the protection of ductile iron pipes against root intrusion, ensuring their long-term durability and functionality.

Q:How are ductile iron pipes connected together?: Ductile iron pipes are commonly joined together using different methods, which vary depending on the specific application and requirements. The most frequently used method for connecting these pipes is through mechanical joint fittings. These fittings consist of one pipe with a bell end and another with a spigot end, which are joined using bolts or clamps and a rubber gasket. The rubber gasket ensures a tight seal, while the bolts or clamps secure the joint and prevent any movement or separation. Another approach to connecting ductile iron pipes is through flanged joints. This involves attaching a flange to the end of each pipe and then fastening them together using bolts and nuts. Flanged joints are commonly employed in larger diameter pipes or situations where disassembly is necessary. In addition to mechanical joint fittings and flanged joints, push-on or restrained joint fittings can also be used to connect ductile iron pipes. Push-on joints involve pushing a rubber gasket onto the spigot end of the pipe to create a secure and tight connection. On the other hand, restrained joints incorporate additional features like welded-on collars or mechanical devices to prevent movement and enhance joint strength. The choice of connection method for ductile iron pipes depends on factors such as pipe diameter, pressure requirements, and the specific application. It is crucial to adhere to the manufacturer's guidelines and industry standards to ensure proper installation and reliable performance of the connected pipes.

Q:Ductile iron 600-3 grade, tensile strength, how to test, there is a simple way?: Generally use tensile machine to do, I often operate, or you see the metallographic 3J above perlite 60% above should be no problem

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