| Hot Selling Pipes |
| Steel Wire Reinforced PE Composite Pipe |
Fiberglass Steel Wire Reinforced Composite Pipe |
HDPE Pipe |
PVC Pipe |
| Antistaic Flame Redartant Composite Pipe for Mining |
Anti-corrosion Composite Pipe |
Thermal Insulated Pipe |
Big Carliber Composite Steel Pipe |
Transportation: Essential for the seamless conveyance of oil, gas, and their derivatives, our pipes are engineered for long-distance transport. Large-diameter transmission pipelines efficiently move crude oil, natural gas, and refined products from production fields to refineries, processing plants, and distribution hubs.
Our Epoxy & Plastic coated anti-corrosion steel pipes offer versatile solutions tailored to diverse working conditions. Ideal for environments such as buried installations, trenchless traction, pipe jacking, and open-air applications, they incorporate advanced anti-corrosion technologies for optimal performance:
- Buried: Options include inner epoxy with outer PE, inner epoxy with outer 3PE, inner epoxy with outer 3PP, or fully epoxy-coated both inside and out.
- Pipe Jacking: Choose from inner epoxy with outer 3PE, inner epoxy with outer 3PP, or inner epoxy with double-layer epoxy coating for enhanced durability.
- Trenchless Traction: Available with inner epoxy and outer 3PE, inner epoxy and outer 3PP, or inner epoxy with an additional double layer of epoxy coating.
- Open-air Application: Features an inner epoxy coating with a specialized anti-UV outer coating for maximum protection in exposed environments.
Our Inner Epoxy Resin Outer Polyethylene Coating Composite Steel Pipes start with pre-treated steel pipes. Through a meticulous process, the inner surface is coated with fusion-bonded epoxy powder and the outer surface with polyethylene powder, creating a composite product that is both corrosion-resistant and robust, perfect for demanding applications.
| Clamp Connection |
Flange Connection |
Offering exceptional compatibility and ease of connection.
The inner and outer layers of our double-layer epoxy feature an epoxy resin coating, achieving seamless compatibility. Utilizing a solvent-free epoxy coating patented for its remarkable properties, this product ensures outstanding compatibility and unparalleled corrosion resistance.
Superior Cathodic Protection
Our double-layer epoxy coating harmonizes perfectly with cathodic protection systems, ensuring no interference or shielding.
Excellent Flexibility and Bend Resistance
Crafted from high molecular weight epoxy resin, our coating material boasts superior flexibility and extraordinary resistance to bending.
Superior Scratch Resistance
The outer layer, featuring a modified epoxy coating with specialized scratch-resistant materials, offers exceptional protection against scratches.
High Temperature Resilience
Our double-layer epoxy anti-corrosive steel pipes are engineered to withstand temperatures up to 110ºC.
1. Available in caliber ranges from DN50 to DN3600, with pipe lengths varying between 6 to 16 meters per piece.
2. Equipped with 2 state-of-the-art powder coating production lines and 12 twin-screw extruders, we excel in powder coating and polyethylene material modification, backed by comprehensive R&D production capabilities.
3. As a leader in the powder anticorrosion process, we offer diverse methods including suction coating, spraying, rolling coating, and dip coating.
4. We are the only enterprise in the nation that integrates large-caliber steel pipe production, anti-corrosion processing, and anti-corrosion material manufacturing.
5. Ensuring the highest safety and reliability, our socket-type anti-corrosion steel solutions are second to none.
| 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≤3600 |
>0.45 |
>1.5 |
>1.8 |
| Note: can be customized as customer's needs. |
Production Technology
| Uniform Plastic Coating |
Comprehensive Automative Line |
High Quality Steel Roll |
| Biggest 3600 Production Line |
CNAS Labratory |
One-code track |
About Us
Shandong Donghong Pipe Industry Co., Ltd. (referred to as: Donghong Co., Ltd., stock code: 603856) is proudly headquartered in Qufu, China, the revered hometown of Confucius. As a premier engineering pipeline manufacturer, service provider, and general contractor, we specialize in four key categories of functional and customized pipelines: specialized pipelines for rainwater and sewage diversion, municipal areas, industrial and mining sectors, and national key engineering projects. Our comprehensive industrial ecosystem integrates design institutes, financial institutions, port logistics, construction units, and both upstream and downstream enterprises. Our mission is to revolutionize pipeline systems worldwide, enhancing safety and transforming lives through intelligent pipeline solutions.
Donghong boasts a team of over 200 dedicated R&D personnel and holds more than 100 innovative patents. Leveraging esteemed national R&D platforms such as the National Enterprise Technology Center, National CNAS Laboratory, Academician Expert Workstation, and Post-doctoral Workstation, we are at the forefront of research in the fields of digitalization, informatization, and intelligent pipeline engineering. Our pioneering efforts serve critical national strategic initiatives and vital community projects, including the South-to-North Water Diversion, Huangzhilin, Hanzhiwei, Beijing-New Zealand Expressway, and the One Belt, One Road initiative, among others. We are dedicated to supporting the nation's key projects and enhancing public welfare through our cutting-edge pipeline solutions.
1. Does your product adhere to international standards?
Our range of products proudly meets and exceeds international standards, having received certifications from CE, BV, ISO, and WAR. We assure superior quality surpassing all standard benchmarks. Should you require compliance with specific national standards, simply inform us, and we will conduct the necessary checks or tests to fulfill your requirements.
2. What types of services do you provide?
As a premier manufacturing factory, we offer a comprehensive suite of services including the production of pipe products, pipe fittings, packaging, and shipping. In our role as a professional consultation firm, we deliver expert project consulting, pipe system solutions, and design recommendations. Additionally, our engineering expertise allows us to provide pipeline contracting, repair services, and complimentary maintenance guidance.
3. Do you offer OEM/ODM services?
Absolutely. We specialize in customization across materials, specifications, logos, packaging, connection methods, and more. Our expert team is ready to provide tailored solutions for your projects, backed by a track record of successful case studies.
4. What are your payment terms?
We accept payment through T/T or L/C at sight.
5. How do you ensure the quality of the goods provided?
We cordially invite customers to visit our facilities and inspect our products firsthand. We can conduct rigorous testing upon customer request prior to order placement. Additionally, we offer pre-production samples for customer testing to ensure product qualification and satisfaction.
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