Experience the pinnacle of innovation with our High-Performance Internal Epoxy External PE Coated Steel Pipe featuring unparalleled bending resistance. This marvel in steel-plastic composite technology offers exceptional anti-corrosion capabilities, ensuring long-lasting durability and reliability. Crafted from meticulously pre-treated steel pipe, it serves as a robust base. The inner surface is seamlessly coated with fusion-bonded epoxy powder after precise heating, while the outer surface boasts a resilient polyethylene powder coating, forming an impenetrable shield 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: Each pipe can be exquisitely customized to fulfill the precise specifications and unique desires of our esteemed customers.
1. Corrosion Resistance
Our pipeline harnesses the power of cutting-edge anti-corrosion materials-polyethylene and epoxy resin-renowned for their unparalleled ability to resist corrosion. These advanced polymer materials create a formidable barrier, effectively shielding against both soil and fluid damage. This innovation significantly extends the pipeline's longevity, ensuring a steadfast and durable performance over time.
2. Excellent Hydraulic Properties
The pipeline's interior boasts an impressively smooth wall, minimizing scaling and boasting a low friction coefficient. Its non-adhesive surface enhances flow efficiency, optimizing the pipeline's conveying capacity. This streamlined design not only reduces pressure loss but also minimizes energy consumption, making it a beacon of efficiency in water transmission.
3. Good Hygiene Performance
The epoxy resin coating inside the pipeline is crafted to perfection, offering a smooth, scale-resistant surface that is both safe and hygienic. Compliant with the stringent GB/T17219 health standard, this coating ensures the pipeline remains uncontaminated, safeguarding the purity of the water it conveys.
4. Superior Adhesion of Coating
Our modified epoxy resin and polyethylene powder form an exceptionally robust chemical bond with metal, resulting in superior adhesion. The tough outer polyethylene layer offers excellent impact resistance, guarding against scratches and damage. It withstands the rigors of dragging, knocking, and even plant root punctures, ensuring long-lasting durability.
5. Long Life
Engineered for endurance, our anti-corrosion steel pipe boasts an impressive lifespan of 30 to 50 years under standard construction and operational conditions. This remarkable durability represents a substantial advancement over ordinary steel pipes, promising sustained reliability and performance.
6. Good Connection Security
Adaptability is key, and our pipeline offers a variety of robust connection methods to suit diverse environments and pressure requirements. From flanged connections and quick couplings to butt welding, stainless steel lining, and socket connections, each method is crafted for maturity and reliability, ensuring secure and dependable connectivity.
1. At Shandong Donghong Pipe Industry Co., Ltd., we understand that impeccable product quality is the cornerstone of trustworthiness. Our High-Performance Internal Epoxy External PE Coated Steel Pipe with Bending Resistance exemplifies this commitment. By employing cutting-edge equipment and integrating years of refined expertise in process design and manufacturing, we ensure each product meets the highest standards. Our dedication to excellence translates into a consistently reliable and superior product that our esteemed customers can depend upon.
In recognition of the escalating demand for robust large-diameter pipelines, Donghong proudly introduces our state-of-the-art large-diameter anticorrosion steel pipe. Engineered to meet and exceed international standards, our offerings are crafted to provide unparalleled performance and durability, setting the benchmark for quality in the global market.
2. Meeting diverse project needs with innovation, Donghong has pioneered a broad array of connection methods specifically for large-diameter anticorrosive steel pipes. These include flexible socket connections, traditional butt welding, socket lap welds, ball lap welds, and bespoke bevel forms. Our industry-first large-diameter socket flexible connection stands out, supporting calibers up to 1.8 meters. This innovation has been crucial in key water conservancy projects across China, positioning Donghong as a trailblazer and leader in large-diameter steel pipe socket connections.
Donghong's extensive capabilities are further exemplified by our specialized large-diameter, high-pressure pipe fittings factory. Here, we produce top-tier pipe fittings for various projects and offer bespoke solutions tailored to unique customer specifications and environmental conditions, ensuring every project receives the perfect fit.
Explore a spectrum of connection methods tailored for your project requirements with our versatile solutions.
| Socket type connection |
Flange Connection |
Clamp Connection |
About us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856) proudly stands in the culturally rich and historical city of Qufu, China-known as the hometown of Confucius. Founded in 1997, Donghong has established itself as a powerhouse in the engineering pipeline sector. As a manufacturer and comprehensive pipeline engineering service provider, we excel as a general contractor of pipeline projects. Our expertise spans four major categories of functional and tailored pipelines, which include rainwater and sewage drainage, municipal networks, industrial and mining solutions, and critical national projects. With our landmark listing on the Shanghai main board on November 6, 2017, we made history as China's first main board listed manufacturer of engineering composite pipelines.
At Donghong, innovation is at the heart of our operations with over 200 dedicated R&D personnel and a portfolio of more than 100 patents. Our commitment to pioneering research is supported by top-tier national platforms such as the national enterprise technology center, CNAS laboratory, academician expert and postdoctoral workstations. We are at the forefront of advancing the digitalization, informatization, and intelligent transformation of pipeline engineering, setting new benchmarks in the industry.
Donghong is a trusted partner in national key strategic and livelihood projects. We play a pivotal role in prominent initiatives like the South-to-North Water Diversion, Hanjinwei, Beijing-Xinjiang Expressway, One Belt, One Road, standardized farmland development, urban-rural water supply integration, Liren gas networks, and centralized heating systems. Our leadership in the engineering pipeline industry is defined by our commitment to serving these vital infrastructure projects that enhance and sustain our communities.
Donghong has forged strategic alliances with a network of over five elite 5A-level logistics companies, ensuring seamless and efficient transportation solutions backed by years of industry expertise. Utilizing a powerful combination of automotive transport, railway systems, port access, and maritime shipping logistics, we cater to every need, whether in scorching heat or frigid cold. Regardless of how remote or challenging the destination, Donghong guarantees unparalleled service. Our meticulously planned transportation strategy ensures that every shipment reaches the customer site with utmost speed and reliability, delivering on our promise of 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.
Audited Supplier 
){kind=link}