Introducing our cutting-edge Inner Epoxy Resin Outer Polyethylene Coated Composite Steel Pipe, a marvel of modern engineering designed to stand the test of time. This steel-plastic composite marvel boasts superior anti-corrosion properties, meticulously crafted from pre-treated steel pipe as its robust base. Experience innovation with our fusion-bonded epoxy powder expertly applied to the inner surface, offering unparalleled protection, while the outer surface is fortified with a resilient polyethylene powder coating, ensuring durability and reliability.
| 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: Tailor this product to your precise specifications to meet your unique requirements. Customization options available to suit your needs.
1. Corrosion resistance
This state-of-the-art pipeline boasts anti-corrosion materials like polyethylene and epoxy resin, which are premium polymer compounds celebrated for their outstanding resistance to corrosion. These materials act as a robust shield, effectively guarding the pipeline against potential damage by soil and fluids, thereby significantly extending its service life.
2. Excellent hydraulic properties
The pipeline features an exceptionally smooth inner wall, minimizing scaling and offering a remarkably low coefficient of friction. This sleek and non-adhesive surface ensures maximum conveying capacity, and at the same time, reduces both pressure loss and the energy consumption associated with water transmission.
3. Good hygiene performance
With an epoxy resin coating that is impeccably smooth, the pipeline not only resists scaling but is also safe and hygienic. The anticorrosion materials comply with the stringent GB/T17219 health standard, effectively preventing any contamination of water quality by the pipeline.
4. Superior adhesion of coating
Through modification, the epoxy resin and polyethylene powder create powerful chemical bonds with the metal, ensuring strong adhesion. The outer polyethylene layer exhibits excellent toughness and impact resistance, adept at withstanding scratches from dragging and knocking, and resilient against plant root punctures.
5. Long life
Designed for longevity, these anti-corrosion steel pipes can reliably function for an impressive 30 to 50 years, assuming normal construction and usage conditions. This represents a remarkable enhancement in lifespan compared to ordinary steel pipes.
6. Good connection security
Engineered with versatility in mind, the pipeline offers a range of secure connection methods suitable for different environments and pressure requirements. Common methods include flanged, quick coupling, butt welding, stainless steel lining, and socket connection. Each method ensures mature and reliable connectivity.
1. The superior quality of our products is a direct result of our meticulous process design and advanced manufacturing techniques. At Donghong, we utilize sophisticated equipment to meticulously control key processes, leveraging years of manufacturing expertise. This enables us to deliver exceptional quality products, strengthening our reputation as a trustworthy industry leader.
To address the escalating demand for large-diameter pipelines, Donghong proudly introduces our large-diameter anticorrosion steel pipe. Adhering to stringent international standards, we offer first-class products designed to meet the most demanding requirements.
2. Donghong is committed to meeting diverse project needs by developing a range of connection methodologies for large-diameter anticorrosive steel pipes. Options such as flexible socket connection, butt welding, socket lap weld, ball lap weld, and customized bevel forms provide extensive choices for every project. As industry innovators, we pioneered the large-diameter socket flexible connection with a maximum socket caliber reaching 1.8M. This innovation was first utilized in key water conservancy projects in China, establishing Donghong as a trailblazer and leader in large-diameter steel pipe socket connections.
With our large-diameter, high-pressure pipe fittings facility, Donghong manufactures premium pipe fittings tailored for high-stakes projects. We also offer customization of special pipe fittings, ensuring they meet specific customer requirements and project environmental conditions.
Alternative connection methodologies available.
| Socket type connection |
Flange Connection |
Clamp Connection |
About us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856), proudly headquartered in the historical and cultural heart of China, Qufu-the celebrated hometown of Confucius-was established in 1997. As a pioneering force in the engineering pipeline industry, Donghong stands as a leading manufacturer, a trusted pipeline engineering service provider, and a comprehensive general contractor for pipeline projects. Specializing in a diverse array of functional and tailor-made pipeline solutions, Donghong's main business pillars include rainwater and sewage drainage pipes, municipal pipelines, industrial and mining pipelines, as well as pipelines integral to national key projects. Embarking on a new chapter of growth, Donghong was listed on the Shanghai Main Board on November 6, 2017, marking a significant milestone as China's foremost main board-listed engineering composite pipeline manufacturer.
Boasting an impressive team of over 200 innovative R&D personnel and holding more than 100 patents, Donghong harnesses the power of cutting-edge research and technology. Anchored by national-level technology platforms such as the National Enterprise Technology Center, CNAS-accredited laboratory, academician expert workstations, and postdoctoral workstations, Donghong is at the forefront of advancing digitalization, informatization, and intelligent solutions in pipeline engineering. The company is a trailblazer in leading the industry's development.
Dedicated to playing a pivotal role in national key strategic and livelihood projects, Donghong is at the helm of the engineering pipeline industry's evolution. The company proudly contributes to monumental initiatives like the South-to-North Water Diversion, Hanjinwei, Beijing-Xinjiang Expressway, and the transformative One Belt, One Road. Donghong also supports projects such as standardized farmland development, urban-rural water supply integration, Liren gas distribution, and centralized heating, among others, reinforcing its commitment to national progress and the enhancement of everyday life.
At Shandong Donghong Pipe Industry Co., Ltd., we pride ourselves on our robust Packaging & Shipping capabilities. With strategic alliances formed with over five elite 5A-level logistics companies, we leverage decades of transportation expertise to deliver seamless service. Be it roadways, railways, or maritime routes, we successfully navigate every logistical challenge-be it sweltering heat or biting cold, or even the most remote and challenging terrains. Our all-encompassing transportation strategy guarantees that the Internal Epoxy External PE Coated Steel Pipe with Exceptional Cathodic Protection reaches your site promptly and intact, ensuring uninterrupted excellence in service delivery.
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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