Experience the superior technology of our Inner Epoxy Resin Outer Polyethylene Coated Composite Steel Pipe, a marvel of steel-plastic composite engineering. This innovative pipe boasts exceptional anti-corrosion properties, achieved through a meticulous manufacturing process. Begin with our pre-treated steel pipe as a robust base. Following this, the inner surface is skillfully coated with fusion bonded epoxy powder, ensuring durability and resistance. Finally, the outer surface is elegantly enveloped in high-quality polyethylene powder, offering an additional layer of protection. Designed for industrial excellence, this product stands as a testament to advanced engineering.
| 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 options are available to tailor the product precisely to your specific requirements. Let us meet your unique needs with precision.
1. Corrosion Resistance
Our Advanced Internal Epoxy External PE Coated Steel Pipe boasts exceptional corrosion resistance. With the utilization of high-quality anti-corrosive materials such as polyethylene and epoxy resin, both known for their superior durability, this pipe effectively safeguards against soil and fluid-induced damage. This protection significantly extends the pipeline's operational life, ensuring long-lasting performance.
2. Excellent Hydraulic Properties
Featuring a smooth inner wall, this pipe minimizes scaling and offers a low friction coefficient. Its sleek surface and non-adhesive characteristics ensure optimal fluid conveyance, reducing unnecessary pressure drops and minimizing energy consumption during water transmission - a testament to its efficiency and economical benefits.
3. Good Hygiene Performance
The inner epoxy resin coating provides a slick, scale-resistant surface that is both safe and hygienic. This coating complies with GB/T17219 health standards, ensuring the water quality remains uncontaminated by the pipeline, a crucial feature for health-conscious applications.
4. Superior Adhesion of Coating
Through the modification of epoxy resin and polyethylene powder, these materials form powerful chemical bonds with metal, resulting in strong adhesion. The outer polyethylene layer is engineered for toughness and impact resistance, effectively withstanding scratches from dragging, knocks, and even plant root punctures, ensuring durability in challenging environments.
5. Long Life
Built to withstand the test of time, this anti-corrosion steel pipe offers a remarkable lifespan of 30 to 50 years under typical construction and operational conditions. This longevity significantly outmatches that of conventional steel pipes, providing a cost-effective solution for long-term infrastructure projects.
6. Good Connection Security
Designed with versatility and reliability in mind, this pipe supports multiple connection methods to suit various environments and pressure requirements. Options include flanging, quick coupling, butt welding, stainless steel lining, and socket connections, all delivering mature, dependable connections for any application.
1. The caliber of Donghong's excellence is defined by our meticulous process design and state-of-the-art manufacturing techniques. With sophisticated equipment at the helm of our production, we ensure key process controls are adhered to, leveraging years of manufacturing acumen. This commitment enables us to deliver high-quality products, establishing Shandong Donghong Pipe Industry Co., Ltd. as a paragon of trustworthiness in the industry.
Recognizing the burgeoning demand for large-diameter pipelines, Donghong stands at the forefront, introducing large-diameter anticorrosion steel pipes that align with the pinnacle of international standards. Our offering is synonymous with first-class quality, serving to meet the industry's expanding needs with unmatched precision.
2. To cater to diverse project specifications, Donghong pioneers various innovative connection methods for large-diameter anticorrosive steel pipes. These include flexible socket connections, butt welding, socket lap welds, ball lap welds, and customized bevel forms, among others. Notably, Donghong was the trailblazer in developing the large-diameter socket flexible connection, reaching an impressive maximum socket caliber of 1.8M. This innovation was first applied in pivotal water conservancy projects across China, solidifying our position as pioneers and leaders in the large-diameter steel pipe socket connection arena.
Donghong boasts a specialized facility dedicated to the production of large-diameter, high-pressure pipe fittings. This factory not only manufactures standard fittings but also excels in tailoring custom solutions to meet specific customer requirements and project environments, ensuring every expectation is surpassed with precision and skill.
Other connection methods.
| Socket type connection |
Flange Connection |
Clamp Connection |
About us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856) proudly resides in the culturally rich city of Qufu, China, famously known as the hometown of Confucius. Established in 1997, Donghong has grown into a renowned manufacturer and service provider specializing in engineering pipelines. With an impressive portfolio that includes rainwater and sewage drainage pipes, municipal pipelines, industrial and mining pipelines, and pipelines integral to national key projects, Donghong stands as a leading general contractor for pipeline engineering. On November 6, 2017, Donghong marked a significant milestone by becoming the first engineering composite pipeline manufacturer in China to be listed on the main board of the Shanghai Stock Exchange.
With a formidable team of over 200 R&D professionals and the ownership of more than 100 patents, Donghong is at the forefront of innovation. Supported by national-level platforms like the enterprise technology center, CNAS laboratory, academician expert workstation, and postdoctoral workstation, Donghong is pioneering advancements in pipeline engineering through digitalization, informatization, and intelligence. This commitment to cutting-edge research propels Donghong as a leader in the engineering pipeline sector.
Actively engaged in pivotal national strategic and livelihood projects, Donghong is a key player in shaping the future of the engineering pipeline industry. Their expertise supports monumental projects such as the South-to-North Water Diversion, Hanjinwei, the Beijing-Xinjiang Expressway, the One Belt, One Road initiative, and the development of standardized farmland. Furthermore, their contributions to urban and rural water supply integration, Liren gas distribution, and centralized heating underscore their commitment to driving progress and improving lives through engineering excellence.
At Shandong Donghong Pipe Industry Co., Ltd., we have forged solid strategic alliances with over five elite 5A-level logistics companies, showcasing our extensive expertise in transportation logistics. Our diverse logistics network encompasses automobile, railway, and port shipping, seamlessly delivering your products regardless of extreme heat, biting cold, or challenging remote locations. With our robust and comprehensive transportation strategy, we guarantee that every shipment of our Advanced Internal Epoxy External PE Coated Steel Pipe for Industrial Use reaches your site with unparalleled efficiency and swiftness, ensuring your complete satisfaction.
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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