| 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 an indispensable role in the long-distance transportation of oil, gas, and related products. Our large-diameter transmission pipelines are expertly designed to convey crude oil, natural gas, and refined products from production fields to refineries, processing plants, and distribution centers with unrivaled efficiency.
Epoxy & Plastic Coated Anti-Corrosion Steel Pipe: These versatile pipes are engineered to adopt a variety of anti-corrosive solutions, tailored to meet the demands of diverse operating conditions. Suitable for buried installations, trenchless traction, pipe jacking, and open-air applications, the following advanced anti-corrosion solutions can be applied:
- Buried: Inner epoxy with outer PE, inner epoxy with outer 3PE, inner epoxy with outer 3PP, inner and outer epoxy coated.
- Pipe Jacking: Inner epoxy with outer 3PE, inner epoxy with outer 3PP, inner epoxy with outer double-layer epoxy.
- Trenchless Traction: Inner epoxy with outer 3PE, inner epoxy with outer 3PP, inner epoxy with outer double-layer epoxy.
- Open-Air Application: Inner epoxy with outer anti-UV coating.
Composite Steel Pipe with Inner Epoxy Resin and Outer Polyethylene Coating: Starting with a pre-treated steel base pipe, we apply fusion-bonded epoxy powder to the inner surface and polyethylene powder to the outer surface. This process results in a corrosion-resistant steel-plastic composite product that delivers exceptional performance.
| Clamp Connection |
Flange Connection |
Superior compatibility, effortlessly convenient connection.
Our double-layer epoxy coatings feature an epoxy resin base both inside and out, ensuring exceptional compatibility. The solvent-free epoxy coating is patented, providing outstanding compatibility and unmatched corrosion resistance.
Effective Cathodic Protection
The double-layer epoxy coating boasts excellent compatibility with cathodic protection systems, ensuring it doesn't interfere with the cathodic protection.
Exceptional Flexibility and Bending Resistance
Crafted from high molecular weight epoxy resin, our coating material promises remarkable flexibility and superior resistance to bending.
Outstanding Scratch Resistance
Our outer layer features a modified epoxy coating with specialized scratch-resistant materials, offering unparalleled scratch resistance.
High Temperature Resilience
Our double-layer epoxy anti-corrosive steel pipes can endure temperatures up to a maximum of 110ºC.
1. Available in caliber ranges from DN50 to DN3600, with pipe lengths spanning 6 to 16 meters per piece.
2. Equipped with 2 powder coating production lines and 12 twin-screw extruders, we boast comprehensive powder coating and polyethylene material modification R&D and production capabilities.
3. As the leading powder anticorrosion process manufacturer, we offer a variety of methods including suction coating, spraying, rolling coating, and dip coating.
4. The sole enterprise in the nation that integrates large-caliber steel pipe production, anti-corrosion processing, and anti-corrosion material manufacturing.
5. Ensuring the safety and reliability of 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 esteemed hometown of Confucius. As a premier engineering pipeline manufacturer, pipeline engineering service provider, and pipeline engineering general contractor, our primary business focuses on four specialized categories of functional and customized pipelines: exclusive pipelines for rainwater and sewage diversion, municipal area pipelines, dedicated pipelines for industrial and mining sectors, and pipelines for national key engineering projects. We've fostered a robust industrial ecosystem involving design institutes, financial entities, port logistics, construction units, and both upstream and downstream enterprises. Our commitment is to emerge as a global leader in comprehensive pipeline system solutions, transforming human life with intelligent pipelines and ensuring the perpetual safety of pipeline transportation.
Donghong boasts a team of over 200 R&D specialists 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 digitalization, informatization, and intelligentization of pipeline engineering. This pioneering research steers the advancement of the engineering pipeline industry. Our dedication extends to numerous national key strategic and livelihood projects, including 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. Donghong is steadfast in serving both national strategic endeavors and essential community projects.
1. Does your product meet international standards?
Our products have passed CE, BV, ISO, and WARS certifications, consistently surpassing standard requirements. Feel free to inform us of the specific national standard you need; we will verify or test it accordingly.
2. What services do you offer?
As a manufacturing factory, we provide pipe products, pipe fittings, packaging, and shipping services. As a professional consultation company, we offer project consulting advice, pipe system solutions, and design suggestions. As an engineering-focused enterprise, we also deliver pipeline contracting 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 propose tailored solutions for your specific projects, supported by successful case studies.
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 goods?
We warmly welcome all customers to visit our company and inspect our goods firsthand. We can also conduct stringent tests as per customer requirements before order confirmation. Additionally, we can dispatch samples for customers to perform their own tests to qualify the products before bulk production.
){kind=link}