Product Description:
Shandong Donghong Pipe Industry Co., Ltd. proudly presents our premium Thermal Insulated Pex Pipe Network, meticulously crafted with high-quality polyurethane-foam tubing. Designed expressly for insulating central heating and domestic-water pipelines, this tubing excels in withstanding extreme temperatures from -50°C to 135°C. Its robust construction guarantees exceptional durability, safeguarding your pipes and minimizing heat transfer effectively. Moreover, the tubing's superior chemical resistance broadens its applicability, making it an ideal choice for diverse environmental conditions.
Our cutting-edge rigid polyurethane spray polyethylene-wrapped prefabricated direct-buried insulation pipe is engineered using the latest advancements to optimize foam density uniformity and insulation layer thickness consistency. This state-of-the-art design not only conserves materials but also significantly reduces labor costs, presenting a highly economical solution. It's specifically tailored for efficiently transporting hot water at temperatures up to 140°C, ensuring top performance and reliability.
| 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 a critical component of any piping system, yet they often represent a vulnerable point in the quality of engineering projects. To safeguard the integrity of our customers' initiatives, Shandong Donghong Pipe Industry Co., Ltd. has established a state-of-the-art production workshop dedicated to steel and plastic pipe fittings. We excel in designing and producing a comprehensive array of matching fittings, delivering integrated solutions that ensure the success and reliability of both our customers' projects and our own.
Revolutionary Flexible Socket Connection Insulation Pipe
Shandong Donghong Pipe Industry Co., Ltd. proudly introduces its newly developed flexible socket connection insulation pipe. This innovative installation method significantly outpaces traditional welding connections, eliminating the risks associated with welding patches during construction and ensuring a seamless and efficient assembly process.
Comprehensive Insulation Pipe Patch Demonstration
Experience uniform excellence with our Thermal Insulated Pex Pipe Network, boasting consistent core indicators including thickness, density, thermal conductivity, closed cell rate, and water absorption, all contributing to superior overall stability.
Our pipes feature minimal axis eccentricity and unparalleled low thermal conductivity, ensuring an exceptional overall heat preservation effect.
Utilizing advanced online polyurethane spraying technology, our pipes achieve high reactivity and superior bonding with both the steel pipe and outer protective layer. This ensures that the insulation remains unaffected by temperature changes and prevents delamination.
Our insulation layer is meticulously designed with a flat surface, minor thickness deviation, and an adaptable adjustment range, ensuring it meets various installation needs.
The outer protective layer, crafted through a polyethylene winding method, is characterized by its thin, uniform wall, minimal shrinkage rate, and reduced deformation and stress, thereby offering excellent mechanical properties and resolving issues of easy cracking.
Optimize cost-efficiency with our innovative approach that reduces the thickness of the polyethylene outer protective layer. This design not only maintains the same insulation conditions but also minimizes deformation and stress, significantly decreasing the outer layer's thickness.
Shandong Donghong Pipe Industry Co., Ltd. offers a revolutionary pipe solution with the following outstanding key features:
1. No need for support, minimal heat loss, and eliminates the "support thermal bridge" effect, ensuring maximum efficiency.
2. High strength, excellent toughness, easy welding, and convenient construction for seamless project execution.
3. Low thermal conductivity, superior waterproofing, and unmatched corrosion resistance for reliable direct burial in both soil and water.
4. Simple connection using flange or quick joint, facilitating easy and rapid installation.
5. Exceptionally durable with a long service life, maintaining optimal performance in 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 and exceed international standards such as CE, BV, ISO, and WARS certificates. We ensure compliance with these standards rigorously. Let us know your required national standards, and we will verify or test them for you.
- As a manufacturing factory, we offer an extensive range of pipe products, pipe fittings, packaging, and shipping services. Additionally, as a professional consultation company, we provide expert project consulting advice, comprehensive pipe system solutions, and innovative design suggestions. Our capabilities also include pipeline contractor services, proficient pipe repair services, and free maintenance guidance, highlighting our engineering excellence.
- We support OEM/ODM services, allowing for extensive customization in material choice, specifications, logo, packaging, and connection methods. Our expert team offers tailored solution suggestions for your specific projects, drawing on a wealth of successful past cases.
- Our terms of payment include T/T or L/C at sight. We guarantee the quality of our goods by inviting customers to visit our company and inspect products firsthand. We perform rigorous tests according to customer requirements before orders and offer samples for customer testing prior to bulk production.
The Classic Project Cases
Qingdao Haiyang 4.5 million square meters nuclear energy heating project. This breakthrough initiative marks the first official nuclear energy heating website in China. The project proudly integrates Donghong's pioneering spray-wound pre-direct buried thermal insulation pipe. These pipes boast uniform density, superior energy-saving capabilities, and significantly enhanced heating transmission efficiency. Representing the pinnacle of eco-friendly construction solutions, Donghong's innovative products set a new standard in sustainable building practices.
Welcome to Shandong Donghong Pipe Industry Co., Ltd.
Shandong Donghong Pipe Industry Co., Ltd. (referred to as Donghong Co., Ltd., stock code: 603856) is a premier engineering pipeline manufacturer headquartered in the historic city of Qufu, China, the birthplace of Confucius. We excel in designing and delivering bespoke pipelines tailored for a wide range of applications, including specialized pipelines for rainwater and sewage diversion, municipal infrastructures, industrial and mining domains, and key national engineering projects.
Our company has meticulously crafted a comprehensive industrial ecosystem, incorporating design institutes, financial institutions, port logistics, construction units, and other pivotal stakeholders. We are resolutely committed to revolutionizing human life through intelligent pipeline solutions, ensuring the utmost safety and reliability in pipeline transportation.
Shandong Donghong Pipe Industry Co., Ltd. houses a formidable team of over 200 R&D experts and boasts an impressive portfolio of more than 100 patents. By leveraging esteemed 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 vanguard of digitalization, informatization, and intelligentization in pipeline engineering.
We spearhead the advancement of the engineering pipeline industry and make significant contributions to key national strategic projects and essential livelihood programs. Our notable projects 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 initiatives.
1. Do your products meet international standards?
Our products proudly meet and often exceed international standards, having obtained CE, BV, ISO, and WARS certifications. We surpass these benchmarks and are happy to verify compliance with any national standards you require. Simply let us know your specifications, and we will conduct the necessary checks or tests to ensure full compliance.
2. What types of services do you offer?
As a premier manufacturing factory, we offer a comprehensive suite of services including the production of pipe products and fittings, as well as packaging and shipping. As a professional consultancy, we provide expert project advice, comprehensive pipe system solutions, and detailed design suggestions. Additionally, as an engineering-focused enterprise, we offer pipeline contracting and repair services, along with free maintenance guidance.
3. Do you support OEM/ODM services?
Yes, we provide extensive customization options in material, specifications, logos, packaging, connection methods, and more. Our expert team offers tailored solutions for your specific projects, backed by numerous successful case studies.
4. What are your terms of payment?
We accept T/T (Telegraphic Transfer) or L/C (Letter of Credit) at sight.
5. How can you guarantee the quality of your products?
We warmly invite all customers to visit our facilities and inspect our products firsthand. Additionally, we can conduct rigorous tests to meet your specific requirements before you place an order. For added assurance, we can send samples for you to conduct your own tests prior to bulk production.
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