Product Description:
Shandong Donghong Pipe Industry Co., Ltd. proudly presents our superior Thermal Insulated Pex Pipe Network, meticulously crafted to meet the highest standards of quality and efficiency. Specially designed with premium polyurethane-foam tubing, our product ensures optimal insulation for central heating and domestic water pipelines, effectively withstanding extreme temperatures from -50°C to 135°C. This robust tubing offers exceptional protection, minimizing heat transfer and enhancing the longevity of your piping system. Its rigid construction guarantees durability, preventing any potential damage to the pipes. Furthermore, the tubing's outstanding chemical resistance broadens its applicability across various demanding environments, making it a versatile and reliable choice for all your insulation needs.
Our advanced rigid polyurethane spray polyethylene-wrapped, prefabricated direct-buried insulation pipe exemplifies cutting-edge technology. By enhancing foam density uniformity and maintaining consistent insulation layer thickness, this innovative design not only optimizes material usage but also significantly reduces labor costs. This cost-effective solution is engineered to efficiently transport hot water at temperatures reaching up to 140°C, making it an indispensable asset for your thermal insulation requirements.
| 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 constitute a critical segment of the piping system. Often considered the vulnerable link in engineering construction quality, ensuring robust pipe fittings is essential for project success. Shandong Donghong Pipe Industry Co., Ltd., through its dedicated steel pipe and plastic fittings production workshop, offers meticulously designed and manufactured fittings. Our comprehensive range of compatible fittings delivers integrated, reliable solutions tailored to meet the unique needs of each customer and project.
The Flexible Socket Connection Insulation Pipe
Introducing the newly developed flexible socket connection insulation pipe from Donghong Pipeline! This innovative installation method outperforms traditional welding connections by dramatically speeding up the installation process. It also eliminates the common pitfalls associated with welding patches, ensuring a seamless and higher-quality construction experience.
Insulation Pipe Patch Demonstration
Our Thermal Insulated Pex Pipe Network boasts uniformity in critical indicators such as thickness, density, thermal conductivity, closed cell rate, and water absorption, ensuring exceptional overall stability.
With minimal axis eccentricity and low thermal conductivity, our product guarantees superior heat preservation and sustained efficiency.
Featuring highly reactive online polyurethane spraying, our pipes exhibit superb bonding with the steel pipe and outer protective layer. This ensures minimal impact from temperature changes and eliminates any delamination issues.
Enjoy a flawlessly smooth insulation layer with minimal thickness deviation and adaptable adjustment range, promising top-tier performance.
The polyethylene winding method used for our outer protective layer results in a thin, uniform wall with low shrinkage and deformation. This approach markedly improves overall mechanical properties and eradicates common cracking problems.
We optimize cost-efficiency by reducing the thickness of the polyethylene outer protective layer, which decreases deformation and stress. Despite the thinner layer, insulation properties remain uncompromised, offering significant cost savings.
Shandong Donghong Pipe Industry Co., Ltd. proudly presents a revolutionary piping solution, designed to meet the highest industry standards with the following exceptional features:
1. No need for support, minimizing heat loss and completely eliminating the 'support thermal bridge' effect, ensuring efficient thermal management.
2. High-strength construction with excellent toughness, easy to weld, and designed for hassle-free installation, making it the ideal choice for any project.
3. Exhibits low thermal conductivity, outstanding waterproofing, and corrosion resistance, making it perfect for direct burial in both soil and water environments.
4. Simple and versatile connection methods, including flange or quick joints, ensure easy and secure installation.
5. Built to last with a long service life, capable of withstanding temperatures ranging from -20ºC to 120ºC for over 30 years, ensuring durability and reliability.
| Raw material strategic partners |
Complete production equipment, testing equipment |
- At Shandong Donghong Pipe Industry Co., Ltd., our products adhere to prominent international standards such as CE, BV, ISO, and WARS certifications. We guarantee that our products not only meet but exceed these standards. Inform us of your national standard requirements, and we will verify or test to meet them.
- As a comprehensive manufacturing facility, we provide an extensive range of pipe products, fittings, packaging, and shipping services. Additionally, our professional consultation services offer expert project advice, pipe system solutions, and design suggestions. We also specialize in pipeline contractor services, pipe repair, and offer free maintenance guidance as part of our engineering focus.
- We offer robust OEM/ODM services, allowing for customization in materials, specifications, logos, packaging, connection methods, and more. Our expert team is ready to provide tailored solutions for your specific projects, drawing from our extensive portfolio of successful cases.
- Our flexible payment terms include T/T or L/C at sight. We ensure the highest quality standards, inviting customers to personally visit and inspect our products. Rigorous testing is conducted per customer specifications before orders, and samples are provided for pre-production testing to guarantee satisfaction.
The Classic Project Cases
Qingdao Haiyang 4.5 Million Square Meters Nuclear Energy Heating Project. This landmark endeavor represents the first official nuclear energy heating initiative in China. The project proudly features Donghong's innovative spray-wound pre-direct buried thermal insulation pipes. These cutting-edge products boast uniform density and superior energy-saving properties, significantly enhancing heating transmission efficiency. As a result, they stand as a new beacon in environmentally friendly construction solutions.
Welcome to Shandong Donghong Pipe Industry Co., Ltd.
Shandong Donghong Pipe Industry Co., Ltd. (referred to as Donghong Co., Ltd., stock code: 603856) stands as a premier engineering pipeline manufacturer rooted in Qufu, China, the esteemed birthplace of Confucius. Our expertise lies in the design and provision of bespoke pipelines for a multitude of applications, including specialized pipelines for rainwater and sewage diversion, municipal areas, industrial and mining sectors, and significant national engineering projects.
Our company has cultivated a comprehensive industrial ecosystem that encompasses design institutes, financial institutions, port logistics, construction units, and other vital stakeholders. We are committed to revolutionizing human life through intelligent pipeline solutions, ensuring the utmost safety in pipeline transportation.
Shandong Donghong Pipe Industry Co., Ltd. proudly employs a team of over 200 R&D experts and holds an impressive portfolio of more than 100 patents. By leveraging national technology R&D platforms such as the National Enterprise Technology Center, National CNAS Laboratory, Academician Expert Workstation, and Post-doctoral Workstation, Donghong remains at the cutting edge of digitalization, informatization, and intelligentization in pipeline engineering.
Our company not only leads the engineering pipeline industry but also actively engages in national key strategic projects and people's livelihood initiatives. These include the South-to-North Water Diversion, Huangzhilin, Hanzhiwei, Beijing-New Zealand Expressway, One Belt, One Road, 'Two Clear and One Tip', standardized farmland, urban and rural water supply integration, Liren gas, and centralized heat supply.
1. Is your product meets the international standard ?
Our products have passed CE, BV, ISO, and WARS certifications, showcasing performance metrics that exceed international standards. You are welcome to inform us of any specific national standards you require, and we will conduct the necessary checks or tests to ensure compliance.
2. What kind of service do you offer ?
As a manufacturing powerhouse, we provide high-quality pipe products and fittings, along with comprehensive packaging and shipping solutions. Our expertise as a consulting company allows us to offer project advisories, pipe system designs, and tailored solutions. Additionally, our engineering capabilities extend to pipeline contracting, repair services, and even complimentary maintenance guidance.
3. Do you support OEM/ODM service?
Yes, we specialize in customization, offering flexibility in material choice, specifications, branding, packaging, and connection methods to meet your unique needs. Our expert team can also provide solution recommendations tailored to your projects, backed by a proven track record of successful implementations.
4. What's your terms of payment?
We accept T/T or L/C at sight.
5. How can you gurantee the goods you offered is qualified?
We warmly invite all customers to visit our facilities and inspect our products firsthand. We also adhere to rigorous testing protocols as per customer requirements before finalizing orders. Furthermore, we offer pre-production samples for customers to conduct their own quality tests, ensuring full satisfaction and compliance.
){kind=link}