Our Durable Internal Epoxy External PE Coated Steel Pipe for Extreme Conditions is the pinnacle of advanced engineering and superior craftsmanship. This inner epoxy resin outer polyethylene-coated composite steel pipe is a state-of-the-art steel-plastic composite marvel, designed to withstand the harshest environments. With unparalleled anti-corrosion properties, it begins with meticulously pre-treated steel pipe serving as the robust base. The inner surface is expertly coated with fusion-bonded epoxy powder, ensuring a flawless and enduring finish. On the exterior, a resilient polyethylene powder coating provides an additional layer of protection against the elements, making it the ultimate choice for extreme 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: Tailored solutions available to meet unique customer specifications.
1. Corrosion Resistance
Crafted with precision, our Durable Internal Epoxy External PE Coated Steel Pipe boasts of anti-corrosion materials like polyethylene and epoxy resin. These superior polymer materials offer unparalleled corrosion resistance, shielding the pipeline from soil and fluid damage. This robust protection significantly extends the pipeline's service life, ensuring dependable performance in even the most challenging environments.
2. Excellent Hydraulic Properties
Engineered for efficiency, the interior of our pipe features a smooth surface that resists scaling, boasting a low coefficient of friction. This seamless design not only maximizes the pipeline's conveying capacity but also minimizes pressure loss and reduces energy consumption during water transmission, making it a smart, energy-saving choice.
3. Good Hygiene Performance
The interior epoxy resin coating presents a sleek, sanitary surface that resists scaling and adheres to the esteemed GB/T17219 health standard. This ensures safe, uncontaminated water flow, preserving water quality by effectively preventing any potential contamination from the pipeline itself.
4. Superior Adhesion of Coating
Our advanced coating process involving epoxy resin and polyethylene powder, once modified, creates a formidable chemical bond with the metal. This results in exceptional adhesion. The outer polyethylene layer offers remarkable toughness and impact resistance, effectively withstanding scratches from dragging, knocks, and even plant root punctures.
5. Long Life
Designed for durability, these anti-corrosion steel pipes promise a continuous service life of 30 to 50 years under standard construction and usage conditions. This represents a substantial enhancement over the lifespan of ordinary steel pipes, offering peace of mind and reliable longevity.
6. Good Connection Security
Offering versatility and reliability, our pipelines are engineered to accommodate various connection methods suitable for different environmental and pressure requirements. The options include flanged, quick coupling, butt welding, lined with stainless steel, and socket connection, all ensuring mature and dependable connection security.
1. The impeccable quality of our Durable Internal Epoxy External PE Coated Steel Pipe for Extreme Conditions is rooted in Donghong's meticulous process design and cutting-edge manufacturing techniques. Equipped with advanced machinery for precise quality control, coupled with our extensive manufacturing expertise, we guarantee products of exceptional quality. This dedication to excellence establishes Donghong as a reliable and trustworthy enterprise.
In light of the escalating demand for large-diameter pipelines, Donghong steps up with its cutting-edge large-diameter anticorrosion steel pipes. These first-class products meet and often surpass stringent international standards, ensuring durability and resilience even in the toughest environments.
2. To cater to the diverse needs of various projects, Donghong offers a wide array of connection methods for large-diameter anticorrosive steel pipes. Our innovative range includes flexible socket connections, sturdy butt welding, socket lap weld, ball lap weld, and customized bevel forms, providing a multitude of options to suit any project's specifications. Notably, we pioneered the large-diameter socket flexible connection, achieving a maximum socket caliber of 1.8M. This innovation has been a game-changer in significant water conservancy projects across China, positioning us as the trailblazers and leaders in large-diameter steel pipe socket connections.
At Donghong, our specialized large-diameter, high-pressure pipe fittings factory produces components tailored for high-demand projects. We also offer bespoke customization services, crafting unique pipe fittings to meet the specific requirements of our clients and their project environments, ensuring optimal performance and satisfaction.
Explore our diverse connection methods to discover the perfect solution tailored to your project's unique specifications, ensuring seamless integration and unmatched reliability.
| Socket type connection |
Flange Connection |
Clamp Connection |
About us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856) is prestigiously headquartered in the historic and culturally rich hometown of Confucius - Qufu, China. Founded in 1997, this pioneering company stands as a beacon of excellence in the engineering pipeline sector. As a versatile manufacturer and service provider, Donghong offers an expansive range of functional and bespoke pipelines, specializing in four major categories: rainwater and sewage drainage, municipal, industrial and mining pipelines, and those crafted for national key projects. On November 6, 2017, Donghong achieved a significant milestone by being listed on the main board of Shanghai, proudly becoming the first engineering composite pipeline manufacturer in China to achieve this honor.
Donghong boasts an impressive team of over 200 dedicated R&D personnel and holds more than 100 innovative patents. Harnessing the tremendous resources of the national enterprise technology center, the accredited national CNAS laboratory, and esteemed platforms like the academician expert workstation and postdoctoral workstation, Donghong is at the forefront of advancing the digitalization, informatization, and intelligence of pipeline engineering. Our relentless pursuit of innovation sets the standard for the engineering pipeline industry.
Steadfast in its mission, the company plays a pivotal role in national key strategic projects and essential livelihood initiatives. From the ambitious South-to-North Water Diversion and Hanjinwei to the expansive Beijing-Xinjiang Expressway, and the transformative One Belt, One Road initiative, our pipelines serve critical infrastructure needs. We are proud to contribute to standardized farmland development, urban and rural water supply integration, Liren gas, centralized heating, and many other vital projects that shape the future.
Donghong has forged elite strategic alliances with over five premier 5A-level logistics companies, boasting an extensive background in transportation excellence. By seamlessly integrating automobile transit, railway networks, port facilities, and shipping logistics, we ensure unparalleled service regardless of extreme temperatures or challenging, remote areas. Our holistic transportation strategy guarantees that each shipment reaches the customer site with the utmost speed and efficiency, ensuring reliability and peace of mind for our valued clients.
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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