| 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: Pipes play a pivotal role in transporting oil, gas, and related products over vast distances. Large-diameter pipelines, commonly referred to as transmission pipelines, are essential for conveying crude oil, natural gas, and refined products from production fields to refineries, processing plants, and distribution hubs.
Epoxy & Plastic Coated Anti-Corrosion Steel Pipes: These pipes can be customized with various anticorrosive solutions to cater to diverse working conditions. Suitable for buried, trenchless traction, pipe jacking, open-air applications, and other environmental scenarios, the following anti-corrosion solutions can be applied:
- Buried: inner epoxy outer PE, inner epoxy outer 3PE, inner epoxy outer 3PP, inner & outer epoxy coated solutions
- Pipe Jacking: inner epoxy outer 3PE, inner epoxy outer 3PP, inner epoxy outer double layer epoxy solutions
- Trenchless Traction: inner epoxy outer 3PE, inner epoxy outer 3PP, inner epoxy outer double layer epoxy solutions
- Open-Air Application: inner epoxy outer anti-UV coating solutions
Inner Epoxy Resin Outer Polyethylene Coating Composite Steel Pipe: This innovative product starts with a pre-treated steel pipe as the base. The pipe's inner surface is heated and coated with fusion-bonded epoxy powder, while the outer surface is layered with polyethylene powder. The result is a corrosion-resistant steel-plastic composite pipe with superior performance.
| Clamp Connection |
Flange Connection |
Exceptional Compatibility and Easy Connectivity
Our double-layer epoxy coating, featuring an inner and outer layer of epoxy resin, boasts superior compatibility. Utilizing a solvent-free epoxy coating for patenting, this ensures unparalleled compatibility and exceptional resistance to corrosion.
Superior Cathodic Protection
The double-layer epoxy coating exhibits excellent compatibility with cathodic protection methods, ensuring no interference with the cathodic protection system.
Remarkable Flexibility and Bending Resistance
Crafted from high molecular weight epoxy resin, our coating material offers remarkable flexibility and outstanding resistance to bending.
Outstanding Scratch Resistance
The outer layer, enhanced with a modified epoxy coating and specialized scratch-resistant materials, provides extraordinary protection against scratches.
High Temperature Endurance
Our double-layer epoxy anticorrosive steel pipes are engineered to withstand temperatures up to 110ºC, ensuring durability in high-temperature environments.
1. Caliber range: DN50 ~ DN3600; Pipe length: 6 - 16m per piece
2. Equipped with 2 powder coating production lines, 12 twin-screw extruders, and comprehensive R&D and production capabilities for powder coating and polyethylene material modification.
3. Offering the widest range of powder anticorrosion processes, including suction coating, spraying, rolling coating, dip coating, and more.
4. The only enterprise in the nation that integrates large-caliber steel pipe production with anti-corrosion processing and materials manufacturing.
5. Unmatched safety and reliability of socket-type anticorrosion steel.
| 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 the culturally rich city of Qufu, China, the hometown of Confucius. As a premier engineering pipeline manufacturer, pipeline engineering service provider, and general contractor, our core business revolves around four specialized categories of functional and customized pipelines: rainwater and sewage diversion, municipal area applications, industrial and mining areas, and national key engineering projects. Our comprehensive industrial ecosystem includes design institutes, financial institutions, port logistics, construction units, and both upstream and downstream enterprises. We are steadfastly committed to becoming a global leader in pipeline system comprehensive solutions. By leveraging intelligent pipelines, we aim to revolutionize human life and ensure the continuous safety of pipeline transportation.
Donghong prides itself on boasting over 200 dedicated R&D personnel and securing more than 100 patents. Utilizing national technology R&D platforms such as the National Enterprise Technology Center, National CNAS Laboratory, Academician Expert Workstation, and Post-doctoral Workstation, we delve deeply into the digitalization, informatization, and intelligentization of pipeline engineering. Our relentless innovation positions us at the forefront of the engineering pipeline industry, allowing us to serve pivotal national strategic projects and essential livelihood initiatives. Our contributions can be seen in monumental endeavors such as the South-to-North Water Diversion, Huangzhilin, Hanzhiwei, Beijing-New Zealand Expressway, the One Belt, One Road initiative, standardized farmland, urban and rural water supply integration, Liren gas, and centralized heat supply. Donghong remains integral to the success of these national key strategic projects and people's livelihood projects.
1. Do your products meet international standards?
Our products exceed international standards and hold CE, BV, ISO, and WRAS certifications. Every specification surpasses the required benchmarks. If you need compliance with specific national standards, simply inform us, and we will verify or test accordingly.
2. What services do you offer?
As a manufacturing factory, we supply high-quality pipe products, fittings, packaging, and shipping solutions. Additionally, as a professional consultancy, we provide comprehensive project consulting, pipe system solutions, and design recommendations. As an engineering-centric enterprise, we offer pipeline contracting, repair services, and maintenance guidance.
3. Do you support OEM/ODM services?
Yes, we specialize in customization, including material selection, specifications, logos, packaging, and connection methods. Our expert team can also provide tailored solutions for your specific projects, with numerous successful cases to our credit.
4. What are your payment terms?
We accept T/T or L/C at sight.
5. How do you guarantee the quality of your products?
We warmly invite customers to visit our facility and inspect our products firsthand. We can conduct rigorous pre-order tests as requested. Additionally, before mass production, we can dispatch samples for independent testing to ensure product quality.
){kind=link}