| 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 the long-distance transportation of oil, gas, and related commodities. Large-diameter transmission pipelines are essential for moving crude oil, natural gas, and refined products from production fields to refineries, processing facilities, and distribution hubs.
Epoxy & Plastic Coated Anti-Corrosion Steel Pipe: Designed to meet diverse working conditions, these pipes can be adapted with various anticorrosive solutions. Suitable for buried installations, trenchless traction, pipe jacking, and open-air applications, the following anticorrosion solutions are available:
- Buried: Inner epoxy with outer PE, inner epoxy with outer 3PE, inner epoxy with outer 3PP, and inner & outer epoxy coated.
- Pipe Jacking: Inner epoxy with outer 3PE, inner epoxy with outer 3PP, and inner epoxy with double-layer epoxy.
- Trenchless Traction: Inner epoxy with outer 3PE, inner epoxy with outer 3PP, and inner epoxy with double-layer epoxy.
- Open-Air Application: Inner epoxy with outer anti-UV coating.
Inner Epoxy Resin Outer Polyethylene Coating Composite Steel Pipe: This pre-treated steel pipe features an inner surface coated with fusion-bonded epoxy powder and an outer surface coated with polyethylene powder. The result is a corrosion-resistant steel-plastic composite product with exceptional performance.
| Clamp Connection |
Flange Connection |
Highly compatible and remarkably convenient connection
The inner and outer layers of our double-layer epoxy coating are meticulously crafted with high-quality epoxy resin. This ensures exceptional compatibility between both layers. Our solvent-free epoxy coating, a patented technology, offers unparalleled compatibility and outstanding corrosion resistance.
Superior cathodic protection
Our double-layer epoxy coating seamlessly integrates with cathodic protection systems, ensuring no interference and optimal performance.
Exceptional flexibility and resistance to bending
Crafted from high molecular weight epoxy resin, our coating material boasts superior flexibility and exceptional resistance to bending.
Robust Scratch Resistance
The outer layer features a modified epoxy coating enhanced with specialized scratch-resistant materials, providing excellent scratch resistance.
Remarkable High Temperature Resistance
Our double-layer epoxy anticorrosive steel pipes can endure temperatures up to 110ºC, maintaining integrity under high temperature conditions.
1. Our pipeline range includes calibers from DN50 to DN3600, with each piece available in lengths from 6 to 16 meters.
2. Equipped with 2 advanced powder coating production lines and 12 twin-screw extruders, we boast comprehensive R&D capabilities in powder coating and polyethylene material modification.
3. We are the leading manufacturer of diverse powder anticorrosion processes, offering multiple techniques such as suction coating, spraying, rolling coating, and dip coating.
4. We stand alone in the nation, integrating large-caliber steel pipe production, anti-corrosion processing, and anti-corrosion material manufacturing within a single enterprise.
5. Our socket-type anti-corrosion steel ensures utmost safety and reliability.
| 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 headquartered in Qufu, China, the hometown of Confucius. As a premier engineering pipeline manufacturer, pipeline engineering service provider, and general contractor, our main business spans four categories of functional and customized pipelines: specialized pipelines for rainwater and sewage diversion, municipal areas, industrial and mining areas, and national key engineering projects. We have established a robust industrial ecosystem involving design institutes, financial institutions, port logistics, construction units, and upstream and downstream enterprises. Our commitment is to become a global leader in providing comprehensive pipeline system solutions, making intelligent pipelines transform human life and ensuring the constant safety of pipeline transportation.
Donghong boasts a team of over 200 R&D personnel and holds more than 100 patents. Leveraging national technology platforms such as the National Enterprise Technology Center, National CNAS Laboratory, Academician Expert Workstation, and Post-doctoral Workstation, we delve deeply into the research of digitalization, informatization, and intelligentization of pipeline engineering. Leading the engineering pipeline industry's development, we serve national key strategic projects and livelihood initiatives, including the South-to-North Water Diversion, Huangzhilin, Hanzhiwei, Beijing-New Zealand Expressway, One Belt, One Road, standardized farmland, urban and rural water supply integration, Liren gas, and centralized heat supply. Our extensive involvement in national key strategic projects and people's livelihood projects underlines our dedication to innovation and excellence.
1. Does your product meet international standards?
Our products have passed CE, BV, ISO, and WAR certificates, with all metrics surpassing standard requirements. You are welcome to inform us of any specific national standards you need, and we will verify or test our products accordingly.
2. What services do you offer?
As a manufacturing factory, we provide pipe products, pipe fittings, packaging, and shipping. As a professional consulting company, we offer project consulting, pipe system solutions, and design suggestions. As an engineering-focused enterprise, we also deliver pipeline contractor services, pipe repair services, and free maintenance guidance.
3. Do you support OEM/ODM services?
Yes, we offer customization in material, specifications, logos, packaging, connection methods, and more. Additionally, our professional team can provide solution suggestions for your specific projects, and we have a track record of successful cases.
4. What are your terms of payment?
We accept T/T or L/C at sight.
5. How can you guarantee the quality of your products?
We warmly welcome all customers to visit our company and inspect our products firsthand. We can also conduct strict tests as per customer requirements before order placement. Additionally, before bulk production, we can dispatch samples for customers to perform their own tests to ensure product quality.
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