| 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: Our pipes are indispensable for the efficient and long-distance transport of oil, gas, and other critical commodities. These large-diameter transmission pipelines are vital for moving crude oil, natural gas, and refined products from production fields to refineries, processing facilities, and distribution hubs, ensuring an uninterrupted flow of energy and resources.
Epoxy & Plastic Coated Anti-Corrosion Steel Pipe: Engineered to excel in diverse working conditions, these pipes can be customized with various anticorrosive treatments. Perfect for buried installations, trenchless traction, pipe jacking, and open-air applications, we offer the following anticorrosive solutions tailored to meet your specific needs:
- Buried: Featuring inner epoxy with outer PE, inner epoxy with outer 3PE, inner epoxy with outer 3PP, and inner & outer epoxy coatings.
- Pipe Jacking: Equipped with inner epoxy and outer 3PE, inner epoxy and outer 3PP, and inner epoxy with double-layer epoxy coatings.
- Trenchless Traction: Designed with inner epoxy and outer 3PE, inner epoxy and outer 3PP, and inner epoxy with double-layer epoxy coatings.
- Open-Air Application: Built with inner epoxy and outer anti-UV coating to endure environmental exposure.
Inner Epoxy Resin Outer Polyethylene Coating Composite Steel Pipe: This specially 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 steel-plastic composite that offers exceptional corrosion resistance and superior 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 illustrious hometown of Confucius. As a premier engineering pipeline manufacturer, pipeline engineering service provider, and general contractor, our core business encompasses four distinct 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 cultivated a robust industrial ecosystem integrating design institutes, financial institutions, port logistics, construction units, and upstream and downstream enterprises. Our vision is to become a global leader in delivering comprehensive pipeline system solutions, revolutionizing intelligent pipelines to enhance human life and ensuring the unwavering safety of pipeline transportation.
Donghong prides itself on a team of over 200 R&D personnel and holds an impressive portfolio of more than 100 patents. Utilizing prestigious national technology 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 digitalization, informatization, and intelligentization of pipeline engineering. Leading the engineering pipeline industry's innovation, we contribute to national key strategic projects and essential 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 deep involvement in these critical national and community projects highlights our unwavering commitment to innovation and excellence.
1. Does your product meet international standards?
Our products proudly surpass industry norms, boasting CE, BV, ISO, and WAR certifications. We ensure all metrics exceed standard requirements. If you need adherence to specific national standards, please inform us, and we will verify and test our products accordingly.
2. What services do you offer?
As a premier manufacturing factory, we provide an extensive range of pipe products, pipe fittings, and comprehensive packaging and shipping services. As a professional consulting firm, we offer in-depth project consulting, bespoke pipe system solutions, and expert design advice. Additionally, our engineering prowess allows us to deliver superior pipeline contractor services, reliable pipe repair services, and complimentary maintenance guidance.
3. Do you support OEM/ODM services?
Absolutely, we specialize in customization across various parameters such as material, specifications, logos, packaging, and connection methods. Our expert team offers tailored solutions for your unique projects, backed by a proven history of successful implementations.
4. What are your terms of payment?
We facilitate transactions via T/T or L/C at sight for your convenience.
5. How can you guarantee the quality of your products?
We warmly invite all customers to visit our facilities and inspect our products firsthand. Rigorous testing can be conducted according to customer specifications prior to order confirmation. Additionally, before commencing bulk production, we can dispatch samples for customers to independently verify and ensure product quality.
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