Discover the ultimate in durability and protection with our Inner Epoxy Resin Outer Polyethylene Coated Composite Steel Pipe! This innovative steel-plastic composite marvel offers exceptional anti-corrosion features, crafted meticulously from pre-treated steel pipe as its sturdy base. Experience the seamless fusion of excellence with the inner surface coated in fusion-bonded epoxy powder, and a robust outer layer enveloped in high-performance polyethylene powder. This dual coating process ensures outstanding longevity and resilience, making it an ideal choice for long-term applications.
| 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: We provide customization options to perfectly meet your specific requirements and preferences, ensuring every detail caters to your unique needs.
1. Unparalleled Corrosion Resistance
Crafted with premium anti-corrosion materials such as polyethylene and epoxy resin, this pipe boasts outstanding corrosion resistance. These polymer materials form a formidable shield, effectively protecting the pipeline from the ravages of soil and fluid, thereby significantly extending its service life.
2. Exceptional Hydraulic Efficiency
With an impeccably smooth inner wall, this pipe minimizes scaling and offers a low friction coefficient. Its silky surface and non-adhesive characteristics ensure optimal conveying capacity, while also dramatically reducing pressure loss and energy consumption during water transmission.
3. Exemplary Hygiene Standards
The internal epoxy resin coating is designed for a smooth, scale-resistant finish that is both safe and hygienic. Meeting the GB/T17219 health standard, this anti-corrosion material effectively prevents any contamination, preserving the purity of the water quality.
4. Superior Coating Adhesion
By utilizing modified epoxy resin and polyethylene powder, this pipe forges a robust chemical bond with metal, ensuring exceptional adhesion. The polyethylene outer layer exhibits remarkable toughness and impact resistance, capable of withstanding scratches from dragging and knocking, as well as resistance to plant root penetration.
5. Remarkable Longevity
Designed for durability, this anti-corrosion steel pipe promises a continuous operational span of 30 to 50 years under standard construction and usage conditions, offering a substantial increase in lifespan compared to ordinary steel pipes.
6. Reliable Connection Security
Featuring a variety of connection methods tailored to different environmental and pressure requirements, this pipe accommodates flanged, quick coupling, butt welding, stainless steel lining, and socket connections. These methods ensure mature and reliable connectivity, providing peace of mind in every application.
1. At Donghong, the pinnacle of product quality is achieved through impeccable process design and precise manufacturing. Equipped with cutting-edge technology, we control key processes meticulously, blending them with extensive years of manufacturing expertise. This dedication ensures high-quality outputs, establishing Donghong as a trusted name in the industry.
In a bold move to cater to the rising demand for large-diameter pipelines, Donghong has expanded its portfolio to feature state-of-the-art large-diameter anticorrosion steel pipes. These pipes are crafted to align with stringent international standards, ensuring first-class performance and reliability.
2. To accommodate the diverse needs of varied projects, Donghong innovatively offers multiple connection techniques for large-diameter anticorrosive steel pipes. Options include the flexible socket connection, butt welding, socket lap weld, ball lap weld, and tailored bevel forms, among others. In an industry first, we developed the large-diameter socket flexible connection, boasting a maximum socket diameter of 1.8M. This breakthrough was first deployed in critical water conservancy projects across China, marking Donghong as the trailblazer and leader of large-diameter steel pipe socket connections in the country.
Home to a high-capacity, large-diameter, high-pressure pipe fittings factory, Donghong excels in producing tailored pipe fittings designed to meet the exacting needs of various projects. Our expert customization services adapt to specific customer requirements and project environments, ensuring optimal performance and customer satisfaction.
Additional innovative connection methods enhance the versatility and applicability of our large-diameter steel pipes, ensuring seamless integration into any project.
| Socket type connection |
Flange Connection |
Clamp Connection |
About us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) proudly stands as a pillar of innovation and excellence since its inception in 1997. Based in the historic city of Qufu, the birthplace of Confucius, Donghong has firmly established itself as a leader in manufacturing engineering pipelines and as a comprehensive solutions provider in pipeline engineering services. With a prestigious stock code 603856, Donghong was a trailblazer in becoming the first engineering composite pipeline manufacturer to be listed on the Shanghai Stock Exchange's main board on November 6, 2017. Our expertise spans four primary categories of functional and bespoke pipelines: rainwater and sewage drainage, municipal infrastructure, industrial and mining pipelines, along with pipelines for national key projects.
At the heart of Donghong's innovative spirit lies a team of over 200 dedicated R&D professionals, fortified by an impressive portfolio of more than 100 patents. The company thrives on cutting-edge national technology research platforms, including the National Enterprise Technology Center, CNAS Laboratory, Academician Expert Workstation, and Postdoctoral Workstation. These resources empower Donghong to lead the way in digitalization, informatization, and intelligent solutions in pipeline engineering, setting the benchmark for the industry's future.
Donghong is a cornerstone in advancing critical national strategic projects and enhancing community life. Our pioneering efforts touch pivotal initiatives like the South-to-North Water Diversion, Hanjinwei, and the Beijing-Xinjiang Expressway. Additionally, we're integral to the One Belt, One Road initiative, standardized farmland development, urban-rural water supply integration, Liren gas provision, and centralized heating projects. Donghong is more than a company; it's a catalyst for progress and a trusted partner in shaping the infrastructure of tomorrow.
At Donghong, we take pride in our robust logistics network, forged through strategic alliances with over five 5A-level logistics companies. With years of seasoned transportation expertise, our capabilities span across diverse modes including automotive, railway, port, and maritime logistics. Whether facing scorching heat or biting cold, navigating through remote or challenging terrains, our commitment is unwavering-delivering unparalleled service. Our meticulously crafted transportation strategy ensures that each shipment reaches your doorstep with utmost speed and efficiency.
1. Is your product meets the international standard ?
Our products have pass CE, BV, ISO and wars certificate, and all figures indicates higher than standard, you can feel free to let us know which national standard you required, we will check or test it for you.
2. What kind of service do you offer ?
As a manufacture fatory, we provide pipe products, pipe fittings, package and shipping; as a professional consulation company we provide project consulting advise, pipe system solutions and design suggestions; as an engineering focused enterprise , we also provide pipeline contractor service and pipe repair service, also can give free maintance guidance.
3. Do you support OEM/ODM service?
Yes, we offer customization in material, specification, logo, package , connection methods andothers. Meanwhile, our professional team can offer solution suggestion for your specified projects, we have successfull cases of that service.
4. What's your terms of payment?
T/T or L/C at sight.
5. How can you gurantee the goods you offered is qualified?
We warmly welcome all customers arrange the visit to our company and see our goods in sight, we can also provide strict test as per customer required before order. Meanwhile, before the bulk production, we can dispatch samples for customer to do their own tests to qualify the products.
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