Introducing the innovative and robust Heavy-Duty Internal Epoxy External PE Coated Steel Pipe by Shandong Donghong Pipe Industry Co., Ltd. This masterfully engineered steel-plastic composite marvel offers superior anti-corrosion protection. It is meticulously crafted using a pre-treated steel pipe as its foundational base. The inner surface is enhanced with a fusion-bonded epoxy powder coating, ensuring durability and longevity. Complementing this, the outer surface is enveloped in a resilient polyethylene powder coating, providing an extra layer of defense against the elements.
| 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: Personalization is available to meet your specific requirements.
1. Corrosion Resistance
Crafted from anti-corrosion materials, this steel pipe boasts an exceptional defense against corrosion, utilizing polyethylene and epoxy resin to form a robust shield. These advanced polymer materials excel in preventing both soil and fluid-induced damage, significantly extending the pipeline's service life and ensuring sustained reliability.
2. Excellent Hydraulic Properties
With a meticulously designed smooth inner wall, this pipe minimizes scale build-up and boasts a low friction coefficient. Its sleek and non-adhesive surface enhances the pipeline's conveyance capacity while notably reducing pressure loss and water transmission energy consumption, achieving efficient and cost-effective fluid transport.
3. Outstanding Hygiene Performance
The epoxy resin coating applied internally ensures a smooth, safe, and hygienic surface, discouraging scale formation. Conforming to the GB/T17219 health standards, it effectively prevents any contamination, preserving the purity and quality of the water conveyed through the pipeline.
4. Superior Coating Adhesion
Thanks to modified epoxy resin and polyethylene powder, this pipe forms a formidable chemical bond with the metal, offering strong adhesion. The outer polyethylene layer provides remarkable toughness and impact resistance, adeptly withstanding scratches and abrasions from dragging and knocking, while resisting penetration by plant roots.
5. Extended Lifespan
Designed to last, this anti-corrosion steel pipe delivers a remarkable lifespan of 30 to 50 years under normal construction and use conditions. This longevity marks a significant enhancement over ordinary steel pipes, ensuring sustained performance and peace of mind.
6. Secure Connectivity
Offering a versatile range of connection methods, this pipe meets diverse environmental and pressure requirements with ease. From flanged and quick couplings to butt welding, stainless steel linings, and socket connections, each method is engineered for maturity and reliability, guaranteeing secure and dependable connections.
1. At Shandong Donghong Pipe Industry Co., Ltd., we understand that the hallmark of excellence in our heavy-duty internal epoxy external PE coated steel pipes lies in the meticulous design and precision manufacturing processes we employ. Leveraging state-of-the-art equipment, we ensure stringent quality control at every critical stage of production. Our comprehensive manufacturing experience empowers us to deliver exceptional products that consistently exceed expectations, establishing us as a trusted name in the industry.
In response to the escalating demand for robust large-diameter pipelines, Donghong has expanded its portfolio to include large-diameter anticorrosion steel pipes. We are committed to delivering products that not only meet but surpass international standards, ensuring premium quality and reliability for your infrastructure needs.
2. To cater to diverse project requirements, Donghong has innovatively developed an array of connection methods for large-diameter anticorrosive steel pipes. These include advanced flexible socket connections, precise butt welding, socket lap welds, ball lap welds, and customizable bevel forms. Our pioneering large-diameter socket flexible connection is a groundbreaking achievement, with socket calibers reaching an impressive 1.8 meters. This innovation was first implemented in major water conservancy projects across China, marking Donghong as a trailblazer and leader in large-diameter steel pipe connections.
Donghong boasts a dedicated factory for the production of large-diameter, high-pressure pipe fittings, tailored to meet the rigorous demands of various projects. Beyond our standard offerings, we also provide bespoke solutions, customizing special pipe fittings to align with specific customer requirements and environmental conditions, ensuring optimal integration and performance.
Other connection methods continue to be refined and expanded upon, ensuring that we offer an unparalleled range of options to meet the ever-evolving needs of the industry.
| Socket type connection |
Flange Connection |
Clamp Connection |
About Us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856) invites you to explore our robust legacy, nestled in the cultural heartland of Qufu, China - the venerable hometown of Confucius. Established in 1997, Donghong has risen as a preeminent force in the pipeline industry, specializing in engineering pipeline manufacturing, comprehensive pipeline engineering services, and serving as a trusted general contractor. Our vast expertise spans across four pivotal categories of high-performance and bespoke pipelines: rainwater and sewage drainage systems, municipal infrastructure pipelines, industrial mining pipelines, and pipelines for national key undertakings. A monumental moment in our journey transpired on November 6, 2017, when Donghong proudly became the first composite pipeline manufacturer to be listed on the Shanghai main board. Join us as we continue to forge a path of innovation and excellence in engineering pipelines across China and beyond.
Empowered by over 200 dedicated R&D specialists and holding an impressive portfolio of more than 100 patents, Donghong stands at the forefront of innovation. Our endeavors are propelled by the esteemed national enterprise technology center, the certified national CNAS laboratory, and the collaborative efforts within our academician expert and postdoctoral workstations. With these prestigious national technology research and development platforms, Donghong is pioneering the digital, informational, and intelligent transformation of pipeline engineering, setting new benchmarks and steering the industry's progressive evolution.
Our commitment to excellence has enabled Donghong to play an instrumental role in significant national and community-focused projects. By spearheading advancements in the engineering pipeline industry, we contribute to critical initiatives like the South-to-North Water Diversion Project, the strategic Hanjinwei corridor, Beijing-Xinjiang Expressway, the transformative One Belt, One Road initiative, and the modernization of standardized farmland. Furthermore, we are pivotal in the integration of urban and rural water supply systems, ensuring the provision of Liren gas and facilitating centralized heating solutions, among other vital infrastructure enhancements.
Donghong has forged robust strategic alliances with over five elite 5A-level logistics firms, leveraging our extensive years of expertise in transportation. Whether by road, rail, or sea, our logistics network seamlessly integrates all modes of transport to deliver unparalleled service. Be it intense heat, blistering cold, or the most challenging, remote locations, our dedicated team ensures your goods arrive at their destination promptly and efficiently. Our all-encompassing transportation strategy guarantees that every shipment swiftly reaches your site, making us your trusted partner in logistics excellence.
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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