| 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 a pivotal role in the seamless long-distance transportation of oil, gas, and related commodities. Large-diameter transmission pipelines are indispensable for moving crude oil, natural gas, and refined products efficiently from production fields to refineries, processing facilities, and distribution hubs.
Epoxy & Plastic Coated Anti-Corrosion Steel Pipe: Crafted to excel in diverse working conditions, these pipes are adaptable with various anticorrosive solutions. Ideal for buried installations, trenchless traction, pipe jacking, and open-air applications, the following robust anticorrosion solutions are available:
- Buried: Inner epoxy with outer PE, inner epoxy with outer 3PE, inner epoxy with outer 3PP, and inner & outer epoxy coated.
- Pipe Jacking: Inner epoxy with outer 3PE, inner epoxy with outer 3PP, and inner epoxy with double-layer epoxy.
- Trenchless Traction: Inner epoxy with outer 3PE, inner epoxy with outer 3PP, and 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 meticulously pre-treated steel pipe features an inner surface coated with high-performance fusion-bonded epoxy powder and an outer surface coated with durable polyethylene powder. The result is a superior corrosion-resistant steel-plastic composite product, boasting exceptional performance and longevity.
| Clamp Connection |
Flange Connection |
Experience seamless integration with our highly compatible and remarkably convenient connection system.
The inner and outer layers of our double-layer epoxy coating are meticulously crafted using premium epoxy resin. This ensures exceptional harmony between both layers. Our unique, solvent-free epoxy coating technology provides unmatched compatibility coupled with extraordinary corrosion resistance.
Superior Cathodic Protection
Our innovative double-layer epoxy coating flawlessly integrates with cathodic protection systems, ensuring zero interference and peak performance.
Exceptional Flexibility and Resistance to Bending
Engineered from high molecular weight epoxy resin, our coating material demonstrates superior flexibility paired with exceptional resistance to bending.
Robust Scratch Resistance
The outer layer features a modified epoxy coating, enhanced with specialized scratch-resistant materials, providing remarkable scratch resistance.
Remarkable High Temperature Resistance
Our double-layer epoxy anticorrosive steel pipes withstand temperatures up to 110ºC, ensuring structural integrity under high temperature conditions.
1. Our extensive pipeline range spans calibers from DN50 to DN3600, with lengths varying from 6 to 16 meters.
2. Featuring 2 state-of-the-art powder coating production lines and 12 twin-screw extruders, we excel in R&D capabilities 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 nation's sole enterprise 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 pipes guarantee maximum 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 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), proudly headquartered in the historic city of Qufu, China-the birthplace of Confucius-stands as a leading engineering pipeline manufacturer and service provider. Specializing in a comprehensive array of functional and customized pipelines, our expertise spans four critical categories: rainwater and sewage diversion, municipal applications, industrial and mining sectors, and significant national engineering projects. We have cultivated a powerful industrial ecosystem that integrates design institutes, financial institutions, port logistics, construction units, and a network of upstream and downstream enterprises. Our unwavering mission is to ascend as a global frontrunner in delivering holistic pipeline system solutions, revolutionizing human life with intelligent pipelines, and steadfastly ensuring the safety and efficiency of pipeline transportation.
Donghong Co., Ltd. prides itself on a formidable team of over 200 dedicated R&D personnel and a portfolio of more than 100 patents. Utilizing prestigious national technology platforms such as the National Enterprise Technology Center, the National CNAS Laboratory, the Academician Expert Workstation, and the Post-doctoral Workstation, we dive deep into the realms of digitalization, informatization, and intelligentization of pipeline engineering. Leading the frontier of the engineering pipeline industry, we significantly contribute to key strategic projects and essential public services, 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. Our profound involvement in these national strategic and livelihood projects showcases our relentless commitment to pioneering innovation and excellence.
1. Does your product meet international standards?
Our products have achieved CE, BV, ISO, and WAR certifications, exceeding all standard requirements. If you have specific national standards in mind, please let us know, and we will verify or test our products accordingly to ensure full compliance.
2. What services do you offer?
As a versatile manufacturing factory, we provide exceptional pipe products, pipe fittings, and comprehensive packaging and shipping solutions. In our role as a professional consulting company, we offer expert project consulting, innovative pipe system solutions, and tailored design suggestions. Furthermore, our engineering expertise enables us to deliver top-notch pipeline contractor services, precise pipe repair services, and invaluable free maintenance guidance.
3. Do you support OEM/ODM services?
Absolutely! We specialize in customization across materials, specifications, logos, packaging, connection methods, and more. Our adept professional team is ready to offer bespoke solution suggestions tailored to your specific projects, backed by a portfolio of successful case studies.
4. What are your terms of payment?
We provide flexible payment options, accepting both T/T and L/C at sight for your convenience.
5. How can you guarantee the quality of your products?
We warmly invite all customers to visit our facility and inspect our products firsthand. We also offer to conduct rigorous tests according to your specifications before any order is placed. Additionally, to ensure utmost confidence, we can provide samples for your own testing prior to bulk production.
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