The outer protective layer of the HeatSafe High Temp Pipe Insulation is meticulously crafted from high-strength, high-toughness polyethylene material. Utilizing Shandong Donghong Pipe Industry Co., Ltd.'s revolutionary polyethylene modification technology, this layer undergoes a surface polarization process that significantly enhances its adhesive compatibility with polyurethane. This innovative approach ensures superior adhesion performance, providing unmatched durability and efficiency in thermal insulation applications.
| 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. |
1. Working Steel Pipe: Expertly crafted from seamless steel pipe, spiral welded pipe, and straight seam welded pipe. Before thermal insulation, our pipes undergo meticulous mechanical rust removal, ensuring compliance with quality standards no lower than GB/T8923.1 Sa level 2.5.
2. Slepipe: Designed with a specially modified flame retardant and anti-static polyethylene resin, processed through a single screw extrusion machine. This endows our pipes with outstanding impact resistance, superior isolation properties, and formidable corrosion resistance.
3. Polyurethane Insulation Layer: We employ modified flame retardant polyurethane foam, injected under high pressure to fill the gap between the casing and the working steel pipe. This achieves an exceptional insulation effect characterized by low thermal conductivity, high compression strength, minimal water absorption, and an elevated closure rate.
1. Eliminates the need for support structures, significantly reduces heat loss, and completely eradicates the 'support thermal bridge' phenomenon, enhancing overall efficiency.
2. Boasts high strength and excellent toughness, facilitating easy welding and convenient construction, making it ideal for a variety of applications.
3. Exhibits remarkably low thermal conductivity along with robust waterproof and corrosion resistance, making it perfect for direct burial in the ground or underwater environments.
4. Ensures seamless and reliable connections through flange or quick joint connections, simplifying installation and maintenance processes.
5. Offers an impressive long service life, capable of enduring in environmental conditions ranging from -20ºC to 120ºC for over 30 years, ensuring durability and reliability.
Explore Various Connection Methods: Discover the range of advanced connection methods designed to ensure the highest efficiency and reliability in your applications. From traditional techniques to modern innovations, our methods stand out for their robustness and ease of use.
| Flange connection |
Flexible socket connection |
Welding Joint Demonstration: Witness the precision and durability of our welding joints. Our detailed demonstration showcases the meticulous craftsmanship and superior quality that goes into each joint, ensuring optimal performance and long-lasting results.
Insulation steel pipes are indispensable in liquid and gas transmission pipe insulation projects across various sectors such as petroleum and chemical industries, central heating systems, heating networks, central air-conditioning ventilation pipes, and municipal engineering. Our HeatSafe High Temp Pipe Insulation stands out as a premier choice. It offers exceptional thermal insulation performance, unparalleled safety and reliability, and notably reduced construction costs. Trust in Shandong Donghong Pipe Industry Co., Ltd. to deliver the ultimate in high-temperature prefabricated direct-buried thermal insulation steel pipes, ensuring your projects run smoothly, efficiently, and economically.
Shandong Donghong Pipe Industry Co., Ltd. (referred to as: Donghong Co., Ltd., stock code: 603856) is headquartered in Qufu, China, the revered hometown of Confucius. As a premier engineering pipeline manufacturer, comprehensive pipeline engineering service provider, and trusted general contractor, we excel in delivering top-tier solutions. Our core business spans four primary categories of functional and customized pipeline solutions: specialized pipelines for rainwater and sewage diversion, municipal areas, industrial and mining zones, and national key engineering projects. By fostering an integrated industrial ecosystem that includes design institutes, financial institutions, port logistics, construction units, and both upstream and downstream enterprises, Donghong Co., Ltd. is dedicated to transforming the global pipeline landscape. Our mission is to lead with intelligent pipelines that enhance human life and ensure the perpetual safety of pipeline transportation.
Donghong boasts a formidable team of over 200 R&D professionals and holds an impressive portfolio of more than 100 patents. Our innovation is anchored by prestigious national technology platforms such as the enterprise technology center, CNAS laboratory, academician expert workstation, and post-doctoral workstation. We are trailblazers in researching and advancing the digitalization, informatization, and intelligentization of pipeline engineering, steering the industry's evolution and setting new benchmarks of excellence.
In November 2017, Donghong achieved a significant milestone by being listed on the main board of Shanghai, marking a historic first for engineered composite piping systems in China. This pivotal moment underscores our leadership and innovation in the industry.
Outstanding Technical Research and Development Capabilities
Our national CNAS laboratory is equipped with state-of-the-art testing equipment, facilitating the development of new products, materials, and connection types. This rigorous testing regimen ensures our product quality remains consistently stable and reliable, affirming our unwavering commitment to excellence.
Donghong has forged strategic alliances with over five premier 5A-level logistics companies, boasting extensive expertise in transportation. Leveraging a seamless blend of automotive, railway, and port shipping logistics, our services transcend the challenges of extreme heat, bitter cold, and even the most remote or harsh terrains. Our meticulously crafted transportation strategy guarantees prompt delivery to your doorstep, ensuring unparalleled service and satisfaction. With Donghong, every shipment reaches its destination swiftly and securely.
1. Does your product meet international standards?
Our products have triumphantly met the rigorous benchmarks set by CE, BV, ISO, and WAR certifications, with all metrics far surpassing the requisite standards. If you have a specific national standard in mind, simply let us know, and we will confirm or test it to ensure compliance.
2. What kinds of services do you offer?
As a premier manufacturing facility, we deliver an extensive array of pipe products, fittings, packaging, and shipping solutions. In our consultancy role, we provide expert project advice, innovative pipe system solutions, and tailored design recommendations. Furthermore, as an engineering-driven enterprise, we specialize in pipeline contracting, comprehensive repair services, and offer complimentary maintenance guidance to ensure optimal performance.
3. Do you support OEM/ODM services?
Absolutely, we provide extensive customization options including materials, specifications, logos, packaging, and connection methods. Our accomplished team also devises bespoke solutions tailored to your unique project needs, boasting numerous successful case studies that illustrate our expertise.
4. What are your terms of payment?
We accept payments via T/T or L/C at sight.
5. How can you guarantee the quality of your goods?
We cordially invite all customers to visit our facilities and inspect our products firsthand. In addition, we can perform rigorous testing according to customer specifications prior to order fulfillment. We also provide pre-production samples for customer testing and approval, ensuring the highest quality standards.
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