1. Introducing the Inner Epoxy Resin Outer Polyethylene Coated Composite Steel Pipe, a marvel in steel-plastic composite technology. Crafted from meticulously pre-treated steel pipes, this product boasts superior anti-corrosion properties. The inner surface features a fusion-bonded epoxy powder coating applied after precise heating, while the outer surface is adorned with a resilient polyethylene powder coating. This dual-layer protection ensures unmatched durability and reliability.
2. Recognized as the epitome of excellence in the water conservancy pipeline industry, this product promises consistent anti-corrosion performance across both the pipe body and socket. It seamlessly integrates a flexible socket with top-tier anti-corrosion layers, offering not just the best protection the industry has to offer but also the most user-friendly connection method. Experience unparalleled performance and convenience in one outstanding product.
| Nominal Diameter/ mm |
Inner Coating Layer /mm |
Outer coating layer,mm |
| Ordinary level |
Strengthen level |
| DN ≤65 |
>0.3 |
>0.6 |
>0.8 |
| 65≤DN≤150 |
>0.35 |
>0.8 |
>1.0 |
| 150≤DN≤300 |
>0.35 |
>0.8 |
>1.2 |
| 300≤DN≤800 |
>0.4 |
>1.0 |
>1.3 |
| 800≤DN≤1200 |
>0.45 |
>1.2 |
>1.8 |
| 1200≤DN≤4000 |
>0.45 |
>1.5 |
>1.8 |
Note: Customization is available to meet individual customer requirements, ensuring that each product perfectly fits the specific needs of your project.
1. Corrosion Resistance
Our Carbon Steel Pipe with Anti-Corrosion Coating utilizes advanced polymer materials such as polyethylene and epoxy resin, renowned for their exceptional resistance to corrosion. This robust protection effectively shields pipelines from soil and fluid damage, thereby significantly extending their operational lifespan.
2. Excellent Hydraulic Properties
Featuring a smooth inner wall, our pipes minimize scaling and boast a low friction coefficient. The non-adhesive surface maintains optimal flow capacity while reducing pressure loss and transmission energy consumption, ensuring efficient water conveyance.
3. Superior Hygiene Performance
The epoxy resin coating applied to the inner surface of our pipes is not only smooth and resistant to scaling but also adheres to the stringent GB/T17219 health standards. This guarantees that water quality remains uncontaminated, making our pipes safe and hygienic for extensive use.
4. Exceptional Coating Adhesion
Through the modification of epoxy resin and polyethylene powder, a robust chemical bond forms with the metal surface, ensuring superior coating adhesion. The external polyethylene layer adds toughness and impact resistance, safeguarding against scratches, dragging, and plant root punctures.
5. Extended Lifespan
Designed for longevity, our anti-corrosion steel pipes can serve effectively for 30 to 50 years under normal construction and usage conditions. This marks a substantial improvement over the typical lifespan of standard steel pipes.
6. Reliable Connection Security
Our pipes accommodate diverse environmental and pressure requirements through various connection methods, including flanged, quick coupling, butt welding, lined with stainless steel, and socket connections. These established methods ensure mature and dependable connections.
1. The final quality level of our Carbon Steel Pipe with Anti-Corrosion Coating is a testament to our meticulous process design and manufacturing excellence. At Shandong Donghong Pipe Industry Co., Ltd., we leverage state-of-the-art equipment for critical quality control processes and draw upon years of manufacturing expertise. This ensures that we deliver superior, high-quality products you can trust.
Responding to the increasing demand for large-diameter pipelines, Donghong has introduced large-diameter anticorrosion steel pipes. These products adhere to international standards, offering first-class quality and performance.
2. To cater to diverse project requirements, Donghong has engineered various connection methods for large-diameter anticorrosive steel pipes. Options include flexible socket connections, butt welding, socket lap welds, ball lap welds, customized bevel forms, and more. We pioneered the large-diameter socket flexible connection, with the maximum socket caliber reaching up to 1.8 meters. This innovation was first implemented in significant water conservancy projects in China, establishing us as leaders in large-diameter steel pipe socket connections.
Donghong also boasts a dedicated factory for large-diameter, high-pressure pipe fittings. We produce these specialized fittings for various projects and offer customized solutions tailored to specific customer requirements and project environments.
Other connection methods for our products.
| Socket type connection |
Flange Connection |
Clamp Connection |
About us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856) is headquartered in the culturally rich city of Qufu, the hometown of Confucius, China. Established in 1997, Donghong has emerged as a premier manufacturer specializing in engineering pipelines, offering a comprehensive suite of services as a pipeline engineering provider and general contractor. Our diverse product portfolio encompasses four primary categories of functional and customized pipelines: rainwater and sewage drainage pipes, municipal pipelines, industrial and mining pipelines, and pipelines dedicated to national key projects. On November 6, 2017, Donghong proudly became the first engineering composite pipeline manufacturer listed on the main board of Shanghai, marking a significant milestone in our journey.
Donghong boasts an impressive team of over 200 R&D personnel and holds more than 100 patents. Leveraging cutting-edge national technology platforms such as the National Enterprise Technology Center, National CNAS Laboratory, Academician Expert Workstation, and Postdoctoral Workstation, we are at the forefront of advancing digitalization, informatization, and intelligence in pipeline engineering, setting new standards in the industry.
Our company has been a pivotal player in various national key strategic and livelihood projects. As a leader in the engineering pipeline industry, we proudly contribute to major initiatives including the South-to-North Water Diversion, Hanjinwei, Beijing-Xinjiang Expressway, One Belt, One Road, standardized farmland, the integration of urban and rural water supply, Liren gas, and centralized heating, among others.
Donghong has forged strategic alliances with over five elite, 5A-level logistics companies. With our extensive years of experience in transportation, we seamlessly integrate automobile, railway, port, and shipping logistics. Whether facing the blazing heat or the biting cold, and regardless of how remote or challenging the location, we guarantee unparalleled service. Our robust and comprehensive transportation strategy ensures that every shipment is swiftly and efficiently delivered to your doorstep.
1. Does your product adhere to international standards?
Our products have successfully passed CE, BV, ISO, and WARS certifications, demonstrating superior quality that exceeds standard requirements. Please inform us of the specific national standard you need, and we will verify or test it accordingly.
2. What types of services do you offer?
As a manufacturing entity, we provide a comprehensive range of pipe products, fittings, packaging, and shipping services. As a professional consultancy, we offer expert project advice, pipe system solutions, and design suggestions. Additionally, as an engineering-focused enterprise, we deliver pipeline contracting, repair services, and complimentary maintenance guidance.
3. Do you support OEM/ODM services?
Yes, we offer extensive customization in materials, specifications, logos, packaging, connection methods, and more. Our professional team is also capable of providing tailored solutions for your specific projects, with numerous successful cases to our credit.
4. What are your payment terms?
We accept T/T or L/C at sight.
5. How do you ensure the quality of your products?
We warmly welcome customers to visit our facilities and inspect the goods firsthand. We can also conduct rigorous tests as per your requirements prior to your order. Additionally, we can dispatch samples for your independent testing to ensure product quality before mass production.
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