| 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: Vital to the efficient movement of oil, gas, and related products over vast distances, our large-diameter pipelines, also known as transmission pipelines, serve as the arteries of the energy industry. These robust conduits are specifically designed to transport 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: Our advanced anti-corrosion solutions are meticulously engineered to meet the diverse needs of various working environments. Whether for buried installations, trenchless traction, pipe jacking, or open-air applications, our pipes are built to withstand the harshest conditions. The following anti-corrosion solutions are available:
- Buried: Inner epoxy with outer PE, inner epoxy with outer 3PE, inner epoxy with outer 3PP, inner & 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
Inner Epoxy Resin Outer Polyethylene Coating Composite Steel Pipe: Utilizing pre-treated steel as the base, this innovative pipe undergoes a heating process where the inner surface is coated with fusion-bonded epoxy powder while the outer surface is enveloped in polyethylene powder. This results in a superior, corrosion-resistant steel-plastic composite that performs exceptionally in demanding environments.
| Clamp Connection |
Flange Connection |
Seamless Integration, Effortless Connections
Our advanced double-layer epoxy coating consists of both inner and outer layers crafted from superior epoxy resin. These layers boast exceptional compatibility while leveraging a solvent-free epoxy coating patented for remarkable corrosion resistance.
Superior Cathodic Protection
Our innovative double-layer epoxy coating integrates seamlessly with cathodic protection systems, ensuring it does not interfere with or shield the cathodic protection, providing optimal performance.
Exceptional Flexibility and Bending Resistance
Engineered with high molecular weight epoxy resin, our coating material is designed to offer outstanding flexibility and superior resistance to bending, ensuring durability and longevity.
Scratch Resistance
The outer layer features a specially formulated modified epoxy coating that provides exceptional resistance to scratches, maintaining the pipe's integrity under challenging conditions.
High Temperature Resistant
Our double-layer epoxy anticorrosive steel pipes are meticulously designed to withstand high temperatures, enduring up to an impressive 110ºC.
1. Our pipes come in a diverse caliber range from DN50 to DN3600, and each piece varies in length from 6m to 16m to suit diverse project requirements.
2. Equipped with 2 powder coating production lines and 12 twin-screw extruders, we possess comprehensive R&D and production capabilities for powder coating and polyethylene material modification.
3. As the leading manufacturer of the most diverse powder anticorrosion processes, we offer a range of techniques including suction coating, spraying, rolling coating, and dip coating.
4. We are uniquely positioned as the sole enterprise in the country that integrates large-caliber steel pipe production, anti-corrosion processing, and anti-corrosion material manufacturing under one roof.
5. Our socket-type anti-corrosion steel pipe sets the standard for safety and reliability in the industry.
| 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 historic city of Qufu, China, famously known as the hometown of Confucius. Donghong Co., Ltd. stands as an engineering pipeline manufacturer, a comprehensive pipeline engineering service provider, and a general contractor specializing in four major categories of functional and customized pipelines: rainwater and sewage diversion pipelines, municipal area pipelines, industrial and mining area pipelines, and pipelines for national key engineering projects. The company has meticulously built an industrial ecosystem encompassing design institutes, financial institutions, port logistics, construction units, and upstream and downstream enterprises. Donghong Co., Ltd. is dedicated to becoming a global leader in providing comprehensive pipeline system solutions by leveraging intelligent pipelines to enhance human life and ensure the constant safety of pipeline transportation.
Donghong boasts a robust team of over 200 R&D personnel and holds more than 100 patents. Leveraging national technology research and development platforms such as the National Enterprise Technology Center, National CNAS Laboratory, Academician Expert Workstation, and Post-doctoral Workstation, Donghong delves deeply into the research of digitalization, informatization, and intelligentization of pipeline engineering, spearheading the industry's development. The company is instrumental in serving national key strategic projects and people's livelihood projects, 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, among others. Donghong has established itself as a pivotal participant in numerous national strategic endeavors and projects benefiting people's livelihoods.
1. Do your products meet international standards?
Our products have earned CE, BV, ISO, and other prestigious certifications, consistently surpassing international standards. If you need compliance with specific national standards, just let us know, and we will verify or test accordingly.
2. What types of services do you offer?
As a manufacturing factory, we supply pipe products, fittings, packaging, and shipping. As a professional consulting firm, we offer project advice, pipe system solutions, and design recommendations. Furthermore, as an engineering-focused enterprise, we provide pipeline contracting, repair services, and complimentary maintenance guidance.
3. Do you support OEM/ODM services?
Absolutely. We offer customization in materials, specifications, logos, packaging, connection methods, and more. Our expert team is prepared to provide solution suggestions tailored to your projects, with numerous successful cases as proof.
4. What are your terms of payment?
We accept T/T or L/C at sight.
5. How do you ensure the quality of your products?
We warmly invite all customers to visit our company and inspect the goods firsthand. We can conduct rigorous tests as per customer requirements before order placement. Additionally, we dispatch samples before bulk production for customers to run their own quality assessments.
Audited Supplier 
){kind=link}
){kind=link}