Introducing the Inner Epoxy Resin Outer Polyethylene Coated Composite Steel Pipe: A masterfully engineered steel-plastic composite marvel, renowned for its outstanding anti-corrosion capabilities. This extraordinary pipe is crafted from meticulously pre-treated steel, serving as the sturdy foundation. The inner surface is enhanced with a fusion-bonded epoxy powder coating, applied post-heating to ensure a seamless finish. Meanwhile, its exterior is protected with a resilient polyethylene powder coating, providing an exceptional shield against environmental wear and tear.
| 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: This product can be tailored to meet the specific needs and preferences of our valued customers.
1. Outstanding Corrosion Resistance
Through the innovative use of high-performance anti-corrosion materials such as polyethylene and epoxy resin, this steel pipe is meticulously designed to combat corrosion. These advanced polymer materials exhibit remarkable resistance to the harsh effects of soil and fluid, significantly prolonging the pipeline's lifespan by safeguarding it against potential damage.
2. Unmatched Hydraulic Properties
Featuring an exceptionally smooth inner wall that resists scaling and boasts a low friction coefficient, this pipe ensures optimal fluid conveyance. Its sleek surface and non-adhesive qualities not only maximize the pipeline's transport capacity but also significantly minimize pressure loss and energy consumption during water transmission.
3. Exceptional Hygiene Performance
The pipeline's interior is coated with epoxy resin, offering a smooth, scale-resistant, and hygienic surface. This corrosion-resistant material adheres to the strict GB/T17219 health standards, effectively preventing water quality contamination and ensuring the safe delivery of clean water.
4. Superior Coating Adhesion
With modified epoxy resin and polyethylene powder forming robust chemical bonds with metal, the coating achieves exceptional adhesion. The outer polyethylene layer's toughness and impact resistance fend off scratches from dragging or knocking and resist damage from plant roots, ensuring long-lasting protection.
5. Remarkably Long Life
Exhibiting an extended lifespan of 30 to 50 years under normal conditions, this anti-corrosion steel pipe significantly outperforms traditional steel pipes, promising long-term reliability and durability.
6. Secure and Reliable Connections
Engineered to suit diverse environments and pressures, this pipe offers a plethora of connection methods, including flanges, quick couplings, butt welding, stainless steel linings, and socket connections. These mature and dependable connection options ensure secure and stable integration into any system.
1. At Shandong Donghong Pipe Industry Co., Ltd., we recognize that the pinnacle of product quality is rooted in meticulous process design and advanced manufacturing techniques. Equipped with state-of-the-art technology, Donghong ensures unparalleled process control, drawing from years of accrued expertise. This dedication empowers us to deliver exceptional, high-caliber products, solidifying our position as a trusted partner in the industry.
In anticipation of the escalating demand for large-diameter pipelines, Donghong has strategically expanded its portfolio to include large-diameter anticorrosion steel pipes that align with international quality benchmarks. These first-rate products underscore our commitment to meeting global standards, propelling us to the forefront of the industry.
2. To fulfill diverse project needs, Donghong has engineered a variety of innovative connection solutions for large-diameter anticorrosive steel pipes. Our offerings range from flexible socket connections, butt welding, and socket lap welds to ball lap welds and tailored bevel forms. These versatile options cater to myriad project requirements. Notably, Donghong pioneered the industry-leading large-diameter socket flexible connection, boasting a maximum caliber of 1.8M. This innovation has been pivotal in key Chinese water conservancy projects, establishing Donghong as trailblazers and leaders in large-diameter steel pipe socket connections.
Donghong's cutting-edge facility specializing in large-diameter, high-pressure pipe fittings stands as a testament to our capability. It not only manufactures robust fittings for various projects but also offers bespoke customization, meticulously designed to align with specific customer demands and project conditions.
Other connection methods.
| Socket type connection |
Flange Connection |
Clamp Connection |
About us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) stands as a beacon of excellence in the pipeline industry. Established in the historic city of Qufu, the birthplace of Confucius, this esteemed company has been a trailblazer since its inception in 1997. Donghong, with stock code 603856, is renowned for its expertise in manufacturing and servicing engineering pipelines. As a general contractor, it specializes in a diverse range of customized and functional pipelines, including rainwater and sewage drainage, municipal utilities, industrial and mining pipelines, and pipelines for national key projects. A milestone achievement in its journey was the listing on the main board of Shanghai on November 6, 2017, marking Donghong as the first engineering composite pipeline manufacturer to achieve this distinguished status in China.
Donghong's commitment to innovation is reflected in its robust team of over 200 R&D professionals and a portfolio of more than 100 patents. The company leverages prominent national technology platforms such as the National Enterprise Technology Center, CNAS Laboratory, and multiple expert workstations in academia and postdoctoral research. These resources empower Donghong to lead the digital, informational, and intelligent transformation of pipeline engineering, cementing its role as a frontrunner in the industry.
Engaged in pivotal national strategic initiatives and crucial community projects, Donghong is at the forefront of the engineering pipeline sector. The company contributes significantly to monumental projects like the South-to-North Water Diversion, Beijing-Xinjiang Expressway, and the One Belt, One Road initiative. Furthermore, Donghong plays a vital role in urban-rural water supply integration, standardized farmland development, Liren gas projects, and centralized heating systems, thereby enhancing the nation's infrastructure and quality of life.
At Shandong Donghong Pipe Industry Co., Ltd., we pride ourselves in our strategic alliances with over five elite 5A-level logistics companies. With years of expertise in the transportation industry, we seamlessly integrate automobile, railway, port, and shipping logistics. Whether navigating through scorching heat or biting cold, or delivering to the most remote and challenging areas, our commitment is unwavering. We offer unparalleled service with a robust and comprehensive transportation strategy, ensuring that every shipment of our Robust Internal Epoxy External PE Coated Steel Pipes reaches our customers' sites 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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