| 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 indispensable for the safe and efficient transport of oil, gas, and related products over vast distances. Large-diameter pipelines, known as transmission pipelines, are specially designed to move crude oil, natural gas, and refined products seamlessly from production fields to refineries, processing plants, and distribution centers.
Epoxy & Plastic Coated Anti-Corrosion Steel Pipe: To cater to diverse working conditions, our steel pipes can be customized with various anticorrosive solutions. Suitable for buried, trenchless traction, pipe jacking, and open-air applications, we offer the following robust anticorrosion solutions:
- Buried: Inner epoxy with outer PE, inner epoxy with outer 3PE, inner epoxy with outer 3PP, and inner & outer epoxy coated combinations ensure maximum durability.
- Pipe Jacking: Inner epoxy with outer 3PE, inner epoxy with outer 3PP, and inner epoxy with double-layer epoxy coatings ensure optimal performance.
- Trenchless Traction: Inner epoxy with outer 3PE, inner epoxy with outer 3PP, and inner epoxy with double-layer epoxy coatings provide superior resilience.
- Open-Air Application: Inner epoxy with outer anti-UV coated solutions offer excellent protection against the elements.
Inner Epoxy Resin Outer Polyethylene Coating: This composite steel pipe starts with a pre-treated steel base, followed by heating and coating the inner surface with fusion-bonded epoxy powder. The outer surface is then coated with polyethylene powder, creating a high-performance, corrosion-resistant steel-plastic composite product engineered for maximum longevity and durability.
| Clamp Connection |
Flange Connection |
Excellent compatibility and effortless connection.
The inner and outer layers of our double-layer epoxy tubing feature an epoxy resin coating, ensuring superior compatibility. This solvent-free epoxy coating, which is patented, offers exceptional corrosion resistance.
Superior Cathodic Protection
Our double-layer epoxy coating harmonizes excellently with cathodic protection systems, ensuring no shielding of the cathodic protection.
Remarkable Flexibility and Bend Resistance
Crafted from high molecular weight epoxy resin, our coating material boasts remarkable flexibility and superior resistance to bending.
Exceptional Scratch Resistance
The outer layer, a modified epoxy coating with special scratch-resistant materials, provides outstanding scratch resistance.
High Temperature Resilience
Our double-layer epoxy anticorrosive steel pipe withstands temperatures up to an impressive 110ºC.
1. Available in calibers ranging from DN50 to DN3600, with pipe lengths from 6m to 16m per piece.
2. Equipped with 2 advanced powder coating production lines and 12 twin-screw extruders, offering comprehensive powder coating and polyethylene material modification R&D capabilities.
3. Leading the industry with the widest range of powder anticorrosion processes, including suction coating, spraying, rolling coating, and dip coating.
4. The nation's sole enterprise that integrates large-caliber steel pipe production, anti-corrosion processing, and anti-corrosion materials manufacturing.
5. Ensured safety and reliability with 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), headquartered in the culturally rich city of Qufu, China - the birthplace of Confucius, is a premier engineering pipeline manufacturer, service provider, and general contractor. Specializing in four main categories of functional and customized pipelines: rainwater and sewage diversion, municipal areas, industrial and mining sectors, and national key engineering projects, we pride ourselves on a holistic industrial ecosystem. This includes collaborations with design institutes, financial institutions, port logistics providers, construction units, and both upstream and downstream enterprises. Our mission is to pioneer the global pipeline system industry, transforming human life through intelligent pipeline systems and ensuring the perpetual safety of pipeline transportation.
With a robust team of over 200 R&D personnel and ownership of more than 100 patents, Donghong leads the charge in pipeline engineering innovation. Leveraging national research platforms such as the National Enterprise Technology Center, National CNAS Laboratory, Academician Expert Workstation, and Post-doctoral Workstation, we delve deep into the realms of digitization, informatization, and intelligent pipeline engineering. Our contributions extend to pivotal national strategic and livelihood projects including South-to-North Water Diversion, Huangzhilin, Hanzhiwei, Beijing-New Zealand Expressway, One Belt, One Road Initiative, standardized farmland, urban and rural water supply integration, Liren gas, and centralized heat supply. By steering the engineering pipeline industry, we are committed to serving essential national projects and improving lives across the nation.
1. Does your product meet international standards?
Our products have passed CE, BV, ISO, and WARS certifications, with all metrics exceeding the required standards. Please inform us of the specific national standard you require, and we will verify or test it for you accordingly.
2. What types of services do you offer?
As a manufacturing factory, we provide a comprehensive range of pipe products, fittings, packaging, and shipping services. As a professional consultancy, we offer project consulting, pipe system solutions, and design recommendations. Additionally, as an engineering-focused enterprise, we provide pipeline contracting services, pipe repair services, and free maintenance guidance.
3. Do you support OEM/ODM services?
Yes, we offer extensive customization options in material, specifications, logo, packaging, connection methods, and more. Our professional team can also provide solution suggestions tailored to your specific projects, backed 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 the products you offer?
We warmly welcome all customers to visit our company and inspect our products in person. We can conduct rigorous tests as per your requirements before the order. Furthermore, we can dispatch samples before bulk production for customers to perform their own quality tests.
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