| 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 |
Thermally Insulated Pipe |
Big-Care Composite Steel Pipe |
Transport media: Pipelines are key to long-distance transport of oil, natural gas, water and related media. Donghong's large-diameter anti-corrosion steel pipes can be used to transport water, oil, natural gas and other media, and steel pipes with a diameter of more than 3 meters play a vital role in transporting media from production sites to refineries, processing facilities and distribution centers.
Epoxy and plastic-coated anti-corrosion steel pipes:
These pipes are carefully designed to withstand various working environments and can be customized with a variety of anti-corrosion treatments. They are very suitable for buried installation, trenchless traction, pipe jacking and open-air use.
Our company provides the following professional anti-corrosion treatments:
Buried: with options such as inner epoxy and outer PE, inner epoxy and outer 3PE, inner epoxy and outer 3PP, and inner and outer epoxy coatings.
Pipe jacking: including inner epoxy and outer 3PE, inner epoxy and outer 3PP, and inner epoxy double-layer epoxy resin.
Trenchless traction: Options include inner epoxy and outer 3PE, inner epoxy and outer 3PP, and inner epoxy double-layer epoxy resin.
Open-air application: equipped with inner epoxy and outer UV-resistant coating for enhanced durability.
Industrial and mining use anti-corrosion steel pipes. After pre-treating the base steel pipe, the inner and outer surfaces of the pipe receive a rigid-plastic composite product with a thermosetting epoxy resin layer structure.
| Clamp Connection |
Flange Connection |
Experience unparalleled compatibility and convenience with our highly adaptable connection system.
The inner and outer layers of our double-layer epoxy coating are meticulously crafted using top-tier epoxy resin. This ensures flawless compatibility and exceptional performance. Our solvent-free epoxy coating, a patented innovation, offers unmatched compatibility and superior corrosion resistance.
Unrivaled Cathodic Protection
Our double-layer epoxy coating integrates seamlessly with cathodic protection systems, ensuring interference-free and optimal performance.
Exceptional Flexibility and Bend Resistance
Manufactured from high-molecular-weight epoxy resin, our coating material provides superior flexibility and outstanding resistance to bending.
Durable Scratch Resistance
The outer layer features a modified epoxy coating reinforced with specialized scratch-resistant materials, delivering excellent scratch resistance.
Outstanding High Temperature Resistance
Our double-layer epoxy anticorrosive steel pipes withstand temperatures up to 110 oC, ensuring integrity and performance under high heat conditions.
1. Our pipeline range spans calibers from DN50 to DN3600, with lengths varying from 6 to 16 meters for each piece.
2. Equipped with two advanced powder coating production lines and twelve twin-screw extruders, we excel in R&D for powder coating and polyethylene material modification.
3. As the leading manufacturer of diverse powder anticorrosion processes, we offer an array of techniques, including suction coating, spraying, rolling coating, and dip coating.
4. We are the sole enterprise nationwide that integrates large-caliber steel pipe production, anti-corrosion processing, and anti-corrosion material manufacturing.
5. Our socket-type anti-corrosion steel ensures the highest levels of 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 per the customer's needs. |
Production Technology
| Uniform Plastic Coating |
Comprehensive Automative Line |
High-quality Quality 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, Donghong Co., Ltd. excels in 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 crafted a comprehensive industrial ecosystem encompassing design institutes, financial institutions, port logistics, construction units, and upstream and downstream enterprises. Our unwavering commitment is to lead the world in comprehensive pipeline system solutions, revolutionizing human life with intelligent pipelines and ensuring the perpetual safety of pipeline transportation.
Donghong proudly presents a formidable team of over 200 R&D personnel and holds an impressive portfolio of more than 100 patents. Utilizing national technology platforms such as the National Enterprise Technology Center, National CNAS Laboratory, Academician Expert Workstation, and Post-doctoral Workstation, we intensely focus on the research of digitalization, informatization, and intelligentization of pipeline engineering. As pioneers in the engineering pipeline industry's evolution, we support national key strategic projects and vital 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 participation in national key strategic projects and significant livelihood projects highlights our unwavering 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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