Product Description:
Shandong Donghong Pipe Industry Co., Ltd. proudly presents our superior Foam Core Heat Resistant Pipeline Cover, meticulously engineered to provide unmatched insulation for central heating and domestic water pipelines. Crafted from premium polyurethane foam, this tubing excels in temperature resistance from -50°C to 135°C, ensuring optimal protection and minimal heat loss. Its robust, rigid construction guarantees long-lasting durability and safeguards against pipe damage. Furthermore, the tubing's exceptional chemical resistance makes it versatile for a wide array of applications.
Discover the cutting-edge innovation of our rigid polyurethane spray polyethylene wrapped prefabricated direct-buried insulation pipe. This advanced product leverages state-of-the-art technology to achieve uniform foam density and consistent insulation layer thickness. Such precision engineering not only conserves material but also slashes labor costs, positioning it as a cost-efficient solution for the transportation of hot water up to 140°C.
| Working Steel Pipe Diameter mm |
Outer Sheath Diameter mm |
Minimum thickness of outer sheath mm |
Insulation layer thickness mm |
| 426 |
494-554 |
4.0 |
30-60 |
| 478 |
547-607 |
4.5 |
30-60 |
| 529 |
598-658 |
4.5 |
30-60 |
| 630 |
700-760 |
5.0 |
30-60 |
| 720 |
790-850 |
5.0 |
30-60 |
| 820 |
891-951 |
5.5 |
30-60 |
| 920 |
992-1052 |
6.0 |
30-60 |
| 1020 |
1093-1153 |
6.5 |
30-60 |
| 1120 |
1194-1254 |
7.0 |
30-60 |
| 1220 |
1316-1436 |
8.0 |
40-100 |
| 1420 |
1538-1678 |
9.0 |
50-120 |
| 1620 |
1760-1880 |
10.0 |
60-120 |
| 1820 |
1960-2080 |
10.0 |
60-120 |
| Note: can be customized as customer's needs. |
Pipe fittings are not just vital components of any piping system; they are often the Achilles' heel in engineering construction quality. At Shandong Donghong Pipe Industry Co., Ltd., we understand the stakes. That's why we've established a specialized production workshop for steel and plastic key fittings. Our dedicated facility is equipped to design and produce a comprehensive range of matching fittings, ensuring we offer integrated solutions that safeguard the integrity and excellence of your projects.
Flexible Socket Connection Insulation Pipe
Introducing the latest innovation from Donghong Pipeline: the flexible socket connection insulation pipe. This cutting-edge product revolutionizes installation, making it significantly faster than traditional welding connection methods. By eliminating welding patches, it enhances construction efficiency and reliability, providing a superior solution for your insulation needs.
Insulation Pipe Patch Demonstration
Our Foam Core Heat Resistant Pipeline Cover stands out with its exceptional uniformity in critical parameters such as thickness, density, thermal conductivity, closed cell rate, and water absorption, ensuring remarkable overall stability.
Boasting minimal axis eccentricity and low thermal conductivity, this product excels in delivering outstanding heat preservation effects, making it an unparalleled choice for insulation.
Polyurethane is applied online with high reactivity, forming a superior bond with both the steel pipe and outer protective layer. This ensures the insulation remains unaffected by temperature changes, eliminating any risk of delamination.
The insulation layer features a flat surface with minimal thickness deviation, offering a broad adjustment range for diverse applications.
Utilizing a polyethylene winding method for the outer protective layer, our product achieves a thin, uniform wall with minimal shrinkage, deformation, and stress. This results in excellent mechanical properties, effectively resolving issues of cracking.
By reducing the thickness of the polyethylene outer protective layer, we cut costs while maintaining insulation effectiveness. This approach also minimizes deformation and stress, significantly lowering the outer layer's thickness requirements.
Shandong Donghong Pipe Industry Co., Ltd. offers a revolutionary pipe solution with the following key features:
1. No need for support, minimal heat loss, and eliminates the "support thermal bridge" effect.
2. High strength, excellent toughness, easy welding, and convenient construction.
3. Low thermal conductivity, superior waterproofing, and corrosion resistance for direct burial in soil or water.
4. Simple connection using flange or quick joint for easy installation.
5. Durable with a long service life, suitable for environments ranging from -20ºC to 120ºC for over 30 years.
| Raw material strategic partners |
Complete production equipment, testing equipment |
- Our products at Shandong Donghong Pipe Industry Co., Ltd. meet international standards such as CE, BV, ISO, and wars certificates. We ensure that all our products exceed these standards. Feel free to let us know the national standard you require, and we will check or test it for you.
- As a manufacturing factory, we offer pipe products, pipe fittings, packaging, and shipping services. Additionally, as a professional consultation company, we provide project consulting advice, pipe system solutions, and design suggestions. We also offer pipeline contractor services, pipe repair services, and free maintenance guidance as an engineering-focused enterprise.
- We support OEM/ODM services, allowing customization in material, specification, logo, package, connection methods, and more. Our professional team can provide solution suggestions for your specific projects based on successful past cases.
- Our terms of payment include T/T or L/C at sight. We guarantee the quality of our goods by welcoming customers to visit our company and inspect the products firsthand. We also conduct strict tests as per customer requirements before orders and provide samples for customers to conduct their own tests before bulk production.
The Classic Project Cases
Qingdao Haiyang 4.5 million square meters nuclear energy heating project. This pioneering project marks China's first official foray into nuclear energy heating, showcasing Donghong's state-of-the-art spray-wound pre-direct buried thermal insulation pipes. These innovative products boast uniform density and exceptional energy-saving capabilities, significantly enhancing heating transmission efficiency. As a new generation of environmentally friendly construction solutions, they set a benchmark in sustainable heating technology.
Welcome to Shandong Donghong Pipe Industry Co., Ltd.
Shandong Donghong Pipe Industry Co., Ltd. (referred to as Donghong Co., Ltd., stock code: 603856), nestled in the historic city of Qufu, the birthplace of Confucius, stands as a premier leader in engineering pipeline manufacturing. Our expertise lies in crafting and delivering bespoke pipeline solutions for diverse applications, spanning rainwater and sewage diversion, municipal infrastructures, industrial and mining sectors, and pivotal national engineering projects.
Our enterprise has cultivated a comprehensive industrial ecosystem, integrating design institutes, financial institutions, port logistics, construction units, and other pivotal stakeholders. At Donghong, we are unwavering in our commitment to revolutionizing human life through pioneering intelligent pipelines, ensuring safety and reliability in pipeline transportation.
Shandong Donghong Pipe Industry Co., Ltd. takes pride in our formidable team of over 200 R&D experts and an impressive portfolio of over 100 patents. Utilizing esteemed national technology R&D platforms, including the National Enterprise Technology Center, National CNAS Laboratory, Academician Expert Workstation, and Post-doctoral Workstation, Donghong is leading the charge in digitalization, informatization, and intelligentization within the pipeline engineering sector.
Our company spearheads the evolution of the engineering pipeline industry, playing a crucial role in national strategic projects and initiatives aimed at enhancing public welfare. Our contributions span significant endeavors such as the South-to-North Water Diversion, Huangzhilin, Hanzhiwei, Beijing-New Zealand Expressway, the One Belt, One Road initiative, 'Two Clear and One Tip', standardized farmland development, integration of urban and rural water supply, Liren gas projects, and centralized heat supply systems.
1. Does your product meet international standards?
Our products have successfully passed CE, BV, ISO, and WAR certifications, showcasing performance figures that exceed international standards. Feel free to inform us of any specific national standard you require, and we'll gladly verify or test it for you.
2. What kind of services do you offer?
As a manufacturing factory, we provide a comprehensive range of pipe products, pipe fittings, packaging, and shipping. As a professional consulting company, we deliver project consultancy, pipe system solutions, and design recommendations. Furthermore, as an engineering-focused enterprise, we offer pipeline contracting services, pipe repair services, and free maintenance guidance.
3. Do you support OEM/ODM services?
Absolutely! We offer extensive customization in materials, specifications, logos, packaging, connection methods, and more. Additionally, our expert team can provide tailored solutions for your specific projects, backed by a proven track record of successful implementations.
4. What are your terms of payment?
We accept T/T or L/C at sight.
5. How do you guarantee the quality of the goods you offer?
We warmly invite all customers to visit our company and inspect our products firsthand. We can also conduct rigorous tests as per customer requirements before finalizing orders. Additionally, we can dispatch samples before bulk production for customers to perform their own tests and verify the quality.
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