| 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: These carbon steel pipes are essential for the efficient and secure transportation of oil, gas, and other vital commodities over long distances. With large diameters, they play a pivotal role in moving crude oil, natural gas, and refined products from production sites to refineries, processing plants, and distribution centers, ensuring an uninterrupted energy and resource supply chain.
Epoxy & Plastic Coated Anti-Corrosion Steel Pipe: Designed to perform reliably under varied working conditions, these pipes can be tailored with a range of anticorrosive treatments. Perfect for buried installations, trenchless traction, pipe jacking, and open-air applications, we offer the following specialized anticorrosive solutions to suit distinct requirements:
- Buried: Features include inner epoxy with outer PE, inner epoxy with outer 3PE, inner epoxy with outer 3PP, and both inner and outer epoxy coatings.
- Pipe Jacking: Comes equipped with inner epoxy and outer 3PE, inner epoxy and outer 3PP, as well as inner epoxy with double-layer epoxy coatings.
- Trenchless Traction: Engineered with inner epoxy and outer 3PE, inner epoxy and outer 3PP, and inner epoxy with double-layer epoxy coatings.
- Open-Air Application: Constructed with an inner epoxy and outer anti-UV coating to resist environmental exposure.
Inner Epoxy Resin Outer Polyethylene Coating Composite Steel Pipe: This meticulously pre-treated steel pipe boasts an inner surface coated with fusion-bonded epoxy powder and an outer surface coated with polyethylene powder, creating a steel-plastic composite that delivers superior corrosion resistance and robust performance.
| Clamp Connection |
Flange Connection |
Our product features a highly compatible and remarkably convenient connection.
The inner and outer layers of our double-layer epoxy coating are meticulously crafted with premium epoxy resin. This ensures exceptional adhesion and compatibility between both layers. Our solvent-free epoxy coating, a patented technology, offers unparalleled bonding strength and outstanding resistance to corrosion.
Superior Cathodic Protection
Our double-layer epoxy coating seamlessly integrates with cathodic protection systems, ensuring no interference and delivering optimal performance.
Exceptional Flexibility and Resistance to Bending
Designed with 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 unbeatable scratch resistance.
Remarkable High Temperature Resistance
Our double-layer epoxy anticorrosive steel pipes can endure temperatures up to 110ºC, maintaining structural integrity under high temperature conditions.
1. Our pipeline range covers calibers from DN50 to DN3600, with each piece available in lengths from 6 to 16 meters.
2. Equipped with two advanced powder coating production lines and twelve twin-screw extruders, we boast comprehensive R&D capabilities in powder coating and polyethylene material modification.
3. As the leading manufacturer of diverse powder anticorrosion processes, we offer multiple techniques such as suction coating, spraying, rolling coating, and dip coating.
4. We are the sole enterprise in the nation integrating large-caliber steel pipe production, anti-corrosion processing, and anti-corrosion material manufacturing within a single entity.
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 the illustrious hometown of Confucius, Qufu, China. As a premier engineering pipeline manufacturer and service provider, we specialize in four distinct categories of pipelines: rainwater and sewage diversion, municipal infrastructure, industrial and mining sectors, and national key engineering projects. We have nurtured a comprehensive industrial ecosystem integrating design institutes, financial institutions, port logistics, construction units, and both upstream and downstream enterprises. Our vision is to emerge as a global leader in comprehensive pipeline system solutions, revolutionizing intelligent pipelines to enhance human life and ensuring the utmost safety in pipeline transportation.
Donghong boasts a team of over 200 R&D personnel and 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 pioneers in the research of digitalization, informatization, and intelligentization of pipeline engineering. Leading innovation in the pipeline industry, we contribute to significant national 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 underscores our unwavering commitment to innovation and excellence.
1. Does your product meet international standards?
Our products not only meet but proudly surpass industry norms, having secured esteemed certifications such as CE, BV, ISO, and WAR. We consistently ensure our metrics exceed standard requirements. If you need adherence to specific national standards, please inform us, and we will either verify or test our products accordingly to meet those standards.
2. What services do you offer?
As a leading manufacturing powerhouse, we provide an extensive range of pipe products, pipe fittings, along with comprehensive packaging and shipping services. Our professional consultation services encompass in-depth project consulting, bespoke pipe system solutions, and expert design advice. Additionally, our engineering excellence allows us to offer superior pipeline contractor services, reliable pipe repair services, and complimentary maintenance guidance.
3. Do you support OEM/ODM services?
Absolutely, we excel 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, ensuring your specific needs are met with precision.
4. What are your terms of payment?
For your convenience, we facilitate transactions via T/T or L/C at sight.
5. How can you guarantee the quality of your products?
We warmly invite all customers to visit our state-of-the-art 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, ensuring the highest quality of our products.
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