The Inner Epoxy Resin Outer Polyethylene Coated Composite Steel Pipe represents a cutting-edge innovation in steel-plastic composite technology. Engineered for superior anti-corrosion performance, this product features a meticulously pre-treated steel pipe as its foundation. The inner surface is expertly coated with fusion-bonded epoxy powder, ensuring a robust barrier against internal corrosion. Simultaneously, the outer surface is enveloped in a resilient polyethylene powder coating, providing exceptional protection against external elements. This sophisticated design not only ensures longevity but also maintains structural integrity under demanding conditions.
| 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-made solutions are available to perfectly align with customer-specific requirements.
1.Corrosion resistance
Our Internal Epoxy External PE Coated Steel Pipe proudly showcases anti-corrosion properties brought to you by top-tier polymer materials. Both polyethylene and epoxy resin provide stellar corrosion resistance, expertly shielding pipelines from soil and fluid damages, thereby significantly extending their service life.
2. Excellent hydraulic properties
Experience the brilliance of a smooth inner wall that is resistant to scaling and boasts a low coefficient of friction. This design not only ensures maximum pipeline conveying capacity but also remarkably reduces pressure loss and minimizes water transmission energy consumption.
3. Good hygiene performance
The epoxy resin coating applied to the pipeline's interior is impeccably smooth and scale-resistant, ensuring safety and hygiene. Meeting the stringent GB/T17219 health standards, this anti-corrosive marvel prevents pipeline-related contamination, maintaining superior water quality.
4. Superior adhesion of coating
With the advanced modification of epoxy resin and polyethylene powder, our product forms an unbreakable chemical bond with metal, ensuring exceptional adhesion. The outer polyethylene layer, celebrated for its toughness and impact resistance, effortlessly withstands scratches, drags, plant root punctures, and knocks.
5. Long life
Engineered for longevity, our anti-corrosion steel pipes promise a commendable life span of 30 to 50 years under normal usage and construction conditions, vastly surpassing that of standard steel pipes.
6. Good connection security
Designed for versatility, our pipes offer a plethora of connection methods to adapt to various environmental and pressure needs. Options include flanged, quick coupling, butt welding, lined with stainless steel, and socket connections, all tried and tested for unmatched reliability.
1. At the heart of exceptional product quality lies the intricate dance of process design and manufacturing prowess. At Shandong Donghong Pipe Industry Co., Ltd., we leverage cutting-edge equipment for meticulous control over key quality processes, seamlessly blending this with decades of manufacturing expertise. This harmonious integration ensures that we deliver superior, reliable products, earning us the trust of our valued clients and establishing us as a beacon of dependability.
In light of the burgeoning demand for expansive pipelines, Donghong has proudly expanded its offerings with large-diameter anticorrosion steel pipes. These products are crafted to meet and exceed international benchmarks, ensuring unparalleled performance and durability, positioning us at the forefront of the industry.
2. To cater to the diverse demands of varied projects, Donghong has ingeniously engineered a spectrum of connection methods for large-diameter anticorrosive steel pipes. These include flexible socket connections, butt welding, socket lap welds, and ball lap welds, alongside custom bevel configurations. This versatile array presents abundant options for project integration. We pioneered the development of large-diameter socket flexible connections, with socket diameters reaching an impressive 1.8M. These innovations were first implemented in critical water conservancy initiatives in China, establishing us as trailblazers and leaders in the domain of large-diameter steel pipe socket connections.
Boasting a state-of-the-art facility dedicated to large-diameter, high-pressure pipe fittings, Donghong is adept at crafting these essential components for a multitude of projects. Furthermore, we offer bespoke customization services, tailoring pipe fittings to meet the unique requirements and environmental conditions of any given project, thereby elevating the standard of project-specific solutions.
A Range of Connection Alternatives.
| Socket type connection |
Flange Connection |
Clamp Connection |
About us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856) is a trailblazer in the world of pipeline engineering, proudly rooted in the historic city of Qufu, China-the birthplace of Confucius. Established in 1997, Donghong has emerged as a premier manufacturer and service provider of engineering pipelines. Our expansive portfolio encompasses four pivotal categories: rainwater and sewage drainage pipes, municipal pipelines, industrial and mining pipelines, and essential pipelines for national key projects. As a testament to our excellence, on November 6, 2017, Donghong was distinguished as the first engineering composite pipeline manufacturer to be listed on the main board in Shanghai, marking our commitment to innovation and quality.
At Donghong, innovation is at the core of our operations, with a formidable team of over 200 R&D experts and an impressive collection of over 100 patents. We leverage cutting-edge national research platforms including the National Enterprise Technology Center, CNAS-accredited laboratories, and advanced workstations for academicians and postdoctoral researchers. Our relentless pursuit of advancements in digitalization, informatization, and intelligent pipeline engineering has positioned us as a leader in shaping the future of the industry.
Committed to excellence in service, Donghong plays a pivotal role in national strategic and livelihood projects. We are proud contributors to landmark initiatives such as the South-to-North Water Diversion, the Hanjinwei Project, the Beijing-Xinjiang Expressway, and the One Belt, One Road initiative. Our expertise also extends to vital sectors like standardized farmland, urban-rural water supply integration, Liren gas, and centralized heating, ensuring a better tomorrow for communities across the nation.
At Donghong, we've forged elite strategic alliances with over five prestigious 5A-level logistics giants, leveraging our extensive years of expertise in seamless transportation solutions. Whether traversing by road, rail, or the high seas, we ensure that each of your shipments is handled with the utmost precision and care. From the heart of bustling cities to the most isolated and challenging terrains, no climate is too extreme, no destination too distant. Our meticulous and comprehensive transportation strategy guarantees that every package reaches its destination with unparalleled speed and efficiency. Trust us to deliver excellence with each shipment, every time.
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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