| 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 are critical for the efficient and safe transportation of oil, gas, and associated 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 sites to refineries, processing plants, and distribution centers.
Epoxy & Plastic Coated Anti-Corrosion Steel Pipes offer versatile anticorrosive solutions tailored to various environmental conditions and operational needs. Ideal for buried applications, trenchless traction, pipe jacking, and open-air usage, these pipes can be customized with the following anticorrosion solutions:
- Buried: Inner epoxy with outer PE, inner epoxy with outer 3PE, inner epoxy with outer 3PP, or inner & outer epoxy coating
- Pipe Jacking: Inner epoxy with outer 3PE, inner epoxy with outer 3PP, or inner epoxy with double layer epoxy
- Trenchless Traction: Inner epoxy with outer 3PE, inner epoxy with outer 3PP, or 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 innovative product begins with a pre-treated steel pipe base. The pipe is heated, and the inner surface is 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 enhanced performance and longevity.
| Clamp Connection |
Flange Connection |
Outstanding Compatibility, Easy Connectivity
The inner and outer layers of the double-layer epoxy are coated with high-grade epoxy resin, ensuring superior compatibility. Our patent-pending solvent-free epoxy coating boasts exceptional compatibility and unparalleled corrosion resistance, making it a standout solution.
Exceptional Cathodic Protection
The double-layer epoxy coating offers remarkable compatibility with cathodic protection systems, ensuring no shielding of the cathodic protection.
Remarkable Flexibility and Bending Resistance
Crafted from high molecular weight epoxy resin, our coating material exhibits impressive flexibility and superb resistance to bending, ideal for various applications.
Superior Scratch Resistance
The outer layer features a specially formulated modified epoxy coating that delivers exceptional scratch resistance, safeguarding the integrity of the surface.
High Temperature Endurance
Our double-layer epoxy anticorrosive steel pipe can endure temperatures up to a maximum of 110ºC, ensuring reliable performance even under extreme conditions.
1. Caliber range: DN50 ~ DN3600, with pipe lengths ranging from 6 to 16 meters per piece.
2. Equipped with 2 advanced powder coating production lines and 12 twin-screw extruders. Our facility boasts comprehensive powder coating capabilities and expertise in polyethylene material modification and R&D.
3. As the leading manufacturer of diverse powder anticorrosion processes, we specialize in suction coating, spraying, rolling coating, dip coating, and more.
4. We are the sole enterprise in the nation that integrates large-caliber steel pipe production, anti-corrosion processing, and anti-corrosion material manufacturing under one roof.
5. Ensuring the ultimate safety and reliability of our socket type anti-corrosion 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 headquartered in Qufu, China, the revered hometown of Confucius. As a premier engineering pipeline manufacturer, our company excels as a pipeline engineering service provider and general contractor. Our core offerings span four key 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 meticulously crafted a robust industrial ecosystem incorporating design institutes, financial institutions, port logistics, construction units, and both upstream and downstream enterprises. Donghong Co., Ltd. remains steadfast in its mission to become a global leader in providing comprehensive pipeline system solutions by leveraging intelligent pipeline technologies to enhance human life and ensure the unwavering safety of pipeline transportation.
Donghong boasts a highly skilled R&D team of over 200 professionals and holds more than 100 patents. Leveraging renowned national technology R&D platforms such as the National Enterprise Technology Center, the National CNAS Laboratory, the Academician Expert Workstation, and the Post-doctoral Workstation, we are at the forefront of advancing the digitalization, informatization, and intelligentization of pipeline engineering. Our pioneering efforts drive the evolution of the engineering pipeline industry, playing a pivotal role in key national strategic projects and essential public works. Our contributions include the South-to-North Water Diversion, Huangzhilin, Hanzhiwei, Beijing-New Zealand Expressway, One Belt One Road initiatives, standardized farmland, urban and rural water supply integration, Liren gas, and centralized heat supply projects. Donghong is dedicated to excellence in serving both national strategic interests and essential community projects.
1. Does your product meet international standards?
Our products proudly surpass international standards, having earned CE, BV, ISO, and WARS certifications. With all metrics exceeding standard requirements, you can rest assured of our quality. Let us know your specific national standard requirements, and we will verify or test accordingly.
2. What kind of services do you offer?
As a manufacturing entity, we provide pipe products, fittings, packaging, and shipping services. Additionally, our professional consultation team offers comprehensive project consulting, pipe system solutions, and design advice. As an engineering-focused enterprise, we deliver pipeline contractor services, pipe repair services, and complimentary maintenance guidance.
3. Do you support OEM/ODM services?
Absolutely, we offer full customization including material, specifications, logo, packaging, and connection methods. Our expert team provides tailored solutions for your specific projects with notable success in past 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 invite all customers to visit our facilities and inspect our products firsthand. We can also conduct stringent tests as per customer requirements before order placement. Additionally, we offer sample dispatch for pre-production quality assurance testing by our customers.
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