Discover the pinnacle of innovation with our Internal Epoxy External PE Coated Steel Pipe, a marvel of modern engineering designed by Shandong Donghong Pipe Industry Co., Ltd. This steel-plastic composite product is meticulously crafted to deliver exceptional anti-corrosion performance. Utilizing a pre-treated steel pipe as the robust base, the inner surface is enhanced with a layer of fusion-bonded epoxy powder, expertly applied after precise heating. The outer surface is fortified with a protective polyethylene powder coating, forming a dynamic duo that ensures unparalleled durability and resistance to environmental challenges.
| 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 cater to your specific needs and applications.
1. Corrosion Resistance
Our cutting-edge anti-corrosion materials, polyethylene and epoxy resin, are renowned polymer materials celebrated for their remarkable corrosion resistance. These materials effectively shield the pipeline from soil and fluid-induced damage, thereby dramatically extending the pipeline's service life.
2. Excellent Hydraulic Properties
The pipeline features a remarkably smooth inner wall that is resistant to scaling, which, combined with its low friction coefficient, ensures superior flow capacity. This smooth, non-adhesive surface not only enhances the pipeline's conveyance capabilities but also significantly reduces pressure loss and energy consumption during water transmission.
3. Good Hygiene Performance
The epoxy resin coating inside our pipeline boasts a sleek, scale-resistant surface that ensures safety and hygiene. Meeting the stringent requirements of the GB/T17219 health standard, the anti-corrosion materials effectively prevent contamination of water quality, promising a cleaner and safer pipeline experience.
4. Superior Adhesion of Coating
The meticulous modification of epoxy resin and polyethylene powders creates a robust chemical bond with metal, ensuring exceptional adhesion. The external polyethylene layer is designed for superior toughness and impact resistance, effectively withstanding scratches and impacts while resisting plant root penetration.
5. Long Life
Engineered for longevity, our anti-corrosion steel pipe can function seamlessly for an impressive span of 30 to 50 years under normal construction and usage conditions. This represents a remarkable enhancement over the lifespan of traditional steel pipes.
6. Good Connection Security
Designed with versatility in mind, our pipes offer a variety of connection methods tailored to suit diverse environments and pressure requirements. From flanged and quick coupling to butt welding, stainless steel lining, and socket connections, each method promises mature and reliable connectivity.
1. The ultimate quality of our products is a testament to our advanced process design and cutting-edge manufacturing methods. At Shandong Donghong Pipe Industry Co., Ltd., we employ state-of-the-art equipment for meticulous quality control during key stages of production, leveraging years of expertise. Our commitment is to deliver high-caliber products that earn your trust and establish us as a reliable partner.
To address the escalating need for large-diameter pipelines, Donghong proudly presents our large-diameter anticorrosion steel pipes. These pipes are crafted to meet and exceed international standards, ensuring top-tier products that stand the test of time.
2. To cater to diverse project requirements, Donghong has ingeniously developed multiple connection methods for large-diameter anticorrosive steel pipes. Our offerings include flexible socket connections, butt welds, socket lap welds, ball lap welds, and custom bevel forms, providing comprehensive choices for any project. Notably, we pioneered the large-diameter socket flexible connection, with a maximum socket caliber reaching 1.8M, a first in China, utilized in critical water conservancy projects nationwide. We are trailblazers and leaders in large-diameter steel pipe socket connections in China.
Donghong boasts a specialized factory dedicated to large-diameter, high-pressure pipe fittings. This facility not only produces premium-quality fittings for various projects but also extends the service of customizing special pipe fittings tailored to specific customer requirements and unique project environments.
Additional methods of connection.
| Socket type connection |
Flange Connection |
Clamp Connection |
About us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856) stands proudly in the historic city of Qufu, China, the birthplace of Confucius. Since its establishment in 1997, Donghong has emerged as a pivotal force in the engineering pipeline industry, excelling as a manufacturer, service provider, and general contractor. With excellence across four primary categories-rainwater and sewage drainage, municipal pipelines, industrial and mining pipelines, and those designed for national projects-Donghong's pipelines are synonymous with reliability and innovation. Celebrated as the first Chinese engineering composite pipeline manufacturer to be listed on the main board of Shanghai on November 6, 2017, Donghong continues to set benchmarks in quality and performance.
Donghong's commitment to innovation is evident with its impressive team of over 200 R&D experts and ownership of more than 100 patents. Leveraging prestigious national platforms like the enterprise technology center, CNAS laboratory, academician expert workstation, and postdoctoral workstation, Donghong leads the charge in digitalizing, informing, and revolutionizing the pipeline engineering sector, positioning itself at the forefront of industry advancement.
With an unwavering dedication to national priorities and community well-being, Donghong spearheads the engineering pipeline sector, contributing to critical projects like the South-to-North Water Diversion, Hanjinwei, and Beijing-Xinjiang Expressway. Additionally, Donghong plays a vital role in initiatives such as the One Belt, One Road, urban-rural water supply integration, standardized farmland, Liren gas, and centralized heating, consistently delivering excellence and innovation where it's needed most.
Donghong has forged strategic partnerships with over five elite 5A-level logistics companies, leveraging our extensive experience in diverse transportation methods. Whether by road, rail, sea, or port logistics, we guarantee impeccable service delivery regardless of climate or the remotest and harshest locations. Our meticulously crafted transportation strategy ensures that every shipment reaches our customers with unmatched speed and reliability.
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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