Self Anchoring Black Ductile Iron Pipe with Self-Restrained Joint and Bituminous Coating
Brand TOPSUN
Product origin China
Delivery time 30 days
Supply capacity 10,000 tons per year
Our self-anchoring black ductile iron pipe integrates a self-restrained joint and a protective bituminous coating, making it an ideal solution for challenging underground installations. It is extensively used in mountainous terrains, areas with high groundwater levels, and pipeline networks requiring high seismic resistance, eliminating the need for expensive concrete thrust blocks and significantly speeding up installation. Key features include Self-Anchoring Capability, Self-Restrained Joint, and Bituminous Coating.
Through advanced R&D, we have perfected the Inner Self-Restrained Joint design, ensuring a robust, leak-proof connection under high internal pressure and external loads. The uniform Bituminous Coating provides superior corrosion protection in aggressive soils. Our technical expertise is proven through successful deployments with major municipal water authorities and in large-scale infrastructure projects across diverse regions.
Supported by high-volume production lines and significant raw material reserves, we maintain ample stock of standard sizes and related fittings to guarantee swift project delivery. Our efficient supply chain and proven Production Capacity ensure reliable and timely support for global water infrastructure development, backed by a strong track record in Global Sales.
Type | T-type joint pipe (push-on), K-type joint pipe, self-restrained joint pipe |
Standard | SO2531, EN545, EN598, etc. |
Size | DN80~2600mm |
Material | Ductile Cast Iron GGG50 |
Pressure | PN10, PN16, PN25, PN40 |
Class | K9, K8, C25, C30, C40 |
Length | 6m, cut to 5.7m, or customized |
Internal Coating | a). Portland cement mortar lining b). Sulphate Resistant cement mortar lining c). High-Aluminum cement mortar lining d). Fusion bonded epoxy coating e). Liquid epoxy painting f). Black bitumen painting |
External Coating | a). zinc+ bitumen(70microns) painting b). Fusion bonded epoxy coating c). Zinc-aluminum alloy+ liquid epoxy painting |
Packing | Bundles, in bulk, Package according to customer requirements |
Application | Water supply project, drainage, sewage, irrigation, water pipeline |
The Self-Anchoring Black Ductile Iron Pipe integrates a **self-restrained joint** that provides exceptional thrust resistance, eliminating the need for complex and costly thrust blocks or restraints. This feature is ideal for challenging installations like steep slopes or unstable soil conditions. The pipe's core material, **ductile iron**, offers a superior combination of high strength, impressive toughness, and inherent durability, ensuring reliable performance under high-pressure loads and external stresses.
For long-term corrosion protection, the pipe is coated with a robust **bituminous coating**. This layer provides an effective barrier against aggressive soils and underground chemicals, significantly extending the pipeline's service life. The black finish offers an additional layer of defense. Furthermore, the self-restrained joint design allows for rapid and straightforward assembly, reducing installation time and labor costs. The pipe maintains excellent impact and fatigue resistance, and its ductile iron construction allows for field modifications such as tapping and drilling without compromising its structural integrity. This combination of features makes it a supremely reliable and economical choice for water transmission and sewer force mains.
Centrifugal casting nodular cast iron pipe is a pipe made of nodular cast iron by centrifugal spinning process. The pipeline cantransport fluid media such as water, oil and gas, and is widely used in various pipeline projects such as metallurgy,mining,water conservancy, petroleum, urban public services and so on. Ductile iron pipe has the advantages of high strength,good toughness, better than steel and good corrosion resistance. It is an ideal substitute for gray cast iron pipe and ordinary steel pipe. In addition, the produced Di pipe has good flatness, uniform wall thickness, high dimensional accuracy, good surface finish, excellent mechanical properties and firm adhesion of internal and external coatings.Flexible quick connectors and rubber gaskets are used to facilitate pipe installation. By combining the amazing ductility, high tensile strength and good corrosion resistance of nodular cast iron, this easy to operate pipe can be easily tapped, drilled or welded. Nodular cast iron pipe is famous for its practical performance, which provides unparalleled advantages for the application of water,sewage and natural gas mains!
This self-anchoring pipe is engineered for critical applications where soil stability is a concern, such as steep slopes, river crossings, and seismic zones. Its self-restrained joint system eliminates the need for external thrust blocks, simplifying installation in challenging environments like municipal water mains and industrial pipeline networks. The robust bituminous coating provides superior corrosion resistance, ensuring long-term performance even in aggressive soils.
Our production line integrates advanced centrifugal casting technology and automated quality control, guaranteeing high dimensional accuracy and consistent pipe wall thickness. With an annual output exceeding 10,000 tons, we maintain a dynamic inventory of over 10,000 pipes to meet urgent project demands. Our products have been supplied to major infrastructure projects, including cross-regional water transfer systems and urban renewal initiatives, with documented case studies demonstrating zero joint failures over a decade of service.
Leveraging patented joint design and alloy optimization R&D, our pipes combine ductile iron’s inherent toughness with enhanced tensile strength (≥420 MPa). The fusion of the self-restrained mechanism and anti-corrosion coating extends service life beyond 50 years. Global sales have surpassed 2,000 kilometers of pipelines, backed by certifications from ISO 9001 and ISO 2531. We offer technical support for custom engineering specifications, ensuring reliability in high-pressure fluid transport for water, sewage, and neutral gases.
CUSTOMERS & MARKET
Q: What's your qualification in this product ?
A: We have been engaged in this industry for decades with seasoned export team. All the product is strictly conformed to the international standard ISO2531:1998,EN545-2002 and other related standard.
Q: How long is your delivery time ?
A: Generally it is 5-10 days if the goods are in stock. or it is 20-30 days if the goods are not in stock, it is according to quantity.
Q: What's your terms of payment ?
A: 30% T/T in advance , balance before shipment or against L/C . And D/P , D/A ,L/C for free options.
Q: What's your trade terms ?
A: FOB , CIF , CFR as per client's requirements.
If you have any other questions , please feel free to contact us.
