High Temperature Ppu Pipe, Tube Insulation with Polyurethane Foam Core

• Customization: Available
• Application: Chemical Transport, Industrial Processing, Oil and Gas Distribution, Wastewater Management, Water Supply, Thermal Insulation
• certification: CE, ISO9001
• Model NO.: DH-The thermal insulation-BWGG
• Connection Type: Flanged Joint
• Diameter: 90mm-955mm
• Material: Dhpe and Ppu
• Temperature Range: -20℃ to 80℃
• Filling Density: 60-90 Kg/M3
• Foam Core Density: 68.9 Kg/M3
• Thermal Conductivity: 0.029 W/(M.K)
• Radial Compressive Strength: 0.42 MPa
• Water Absorption: 5.9 %
• Ate of Closed Hole: ≥90%
• Shear Strength: 149-195 Kpa , 170ºC, 1450h
• Transport Package: Standard Package
• Specification: 6m, 12m or Upon your request
• Trademark: DHPI
• Origin: Shandong, China
• HS Code: 3917390000
• Production Capacity: 50000000 Tons /Year

Product Description

Product Description

INSULATION PIPE SYSTEM FOR MINE: Experience unparalleled efficiency and reliability with Shandong Donghong Pipe Industry Co., Ltd.'s cutting-edge High Temperature PPU Pipes. Specifically engineered for demanding underground applications, our tube with pre-insulated pipe systems offers exceptional thermal insulation and unmatched robustness, making them the ideal choice for mining operations. Entrust your infrastructure to the superior quality and advanced technology of our insulation pipe systems to significantly enhance performance and longevity.

Performance of outer guard pipe
Outer Diameter mm	Minimum wall thickness  mm	Outer Diameter mm	Minimum wall thickness  mm
90	3.0	365	7.2
110	3.0	400	7.8
125	3.0	420	8.0
140	3.0	450	8.8
160	3.0	500	9.8
180	3.5	550	10.8
200	3.9	560	11.0
225	4.4	600	11.7
250	4.9	630	12.3
280	5.4	655	12.8
315	5.4	710	13.5
325	6.4	760	13.9
335	6.6	850	15.7
355	7.0	955	17.6

Our Advantages

Discover the unparalleled features of our system, which boasts a cutting-edge stent-free foaming platform that completely eradicates the stent effect, a notorious culprit of heat loss. The outer sheath is expertly crafted from a uniquely modified anti-static flame-retardant polyethylene material, meticulously formed via a single spiral extruder extrusion process. This guarantees an impeccable bond between the foamed insulation layer and the polyethylene exterior, ensuring the insulation pipe remains intact without any delamination. The DHPI mining thermal insulation pipe is distinguished by its exceptional impact resistance, superior isolation capabilities, and outstanding corrosion resistance.

1. Working Steel Pipe: Masterfully constructed from seamless steel pipe, spiral welded pipe, and straight seam welded pipe. Prior to insulation, each pipe undergoes a stringent mechanical rust removal process, meeting the rigorous quality standard of no less than GB/T8923.1 Sa level 2.5.
2. Slepipe: Precisely engineered from specially modified flame-retardant and anti-static polyethylene resin, processed using a single screw extrusion machine. This sophisticated design endows our pipes with superior impact resistance, excellent isolation, and formidable corrosion resistance.
3. Polyurethane Insulation Layer: Employing advanced technology, we inject modified flame-retardant polyurethane foam under high pressure to seamlessly fill the gap between the casing and the working steel pipe. This results in an extraordinary insulation effect, characterized by minimal thermal conductivity, exceptional compression strength, low water absorption, and a high closure rate.

1. Our innovative system eliminates the need for support structures, drastically reducing heat loss and completely eradicating the 'support thermal bridge' phenomenon.
2. Featuring high strength and remarkable toughness, our pipes are easily welded, facilitating convenient construction and installation.
3. With low thermal conductivity coupled with robust waterproof and corrosion resistance, our pipes are perfectly suited for direct burial in the ground or underwater applications.
4. Ensures effortless connection through versatile flange or quick joint connections, streamlining the installation process.
5. Crafted for longevity, our pipes are designed to endure harsh environments, functioning optimally in temperatures ranging from -20ºC to 120ºC, and ensuring a service life of over 30 years.

Connection Method

Varied Connection Methods: Offering flexibility, our pipes can be connected using a range of methods tailored to your specific needs, ensuring robust and reliable installations.

Flange connection

Flexible socket connection

Demonstration of Welding Joints: Experience the precision and strength of our welding joints, meticulously crafted to guarantee durability and seamless integration within your systems.

Appliation Cases

Insulation steel pipes are indispensable in liquid and gas transmission pipe insulation projects across various sectors. These include petroleum and chemical industries, central heating systems, heating networks, central air-conditioning ventilation pipes, and municipal engineering. Our high-temperature prefabricated direct-buried thermal insulation steel pipe stands out as the premier choice. It offers exceptional thermal insulation performance, unparalleled safety and reliability, and notably reduced construction costs.

Company Profile

Shandong Donghong Pipe Industry Co., Ltd. (referred to as: Donghong Co., Ltd., stock code: 603856) is headquartered in Qufu, China, the esteemed hometown of Confucius. We are an elite engineering pipeline manufacturer, a comprehensive pipeline engineering service provider, and a reliable general contractor. Our core business encompasses four key categories of functional and customized pipeline solutions: specialized pipelines for rainwater and sewage diversion, municipal infrastructure, industrial and mining zones, and national key engineering projects. By cultivating an industrial ecosystem that integrates design institutes, financial institutions, port logistics, construction units, and both upstream and downstream enterprises, Donghong Co., Ltd. is devoted to revolutionizing 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 is proud to have a team of over 200 R&D professionals and more than 100 patents. Our innovation is underpinned by national technology platforms such as the enterprise technology center, CNAS laboratory, academician expert workstation, and post-doctoral workstation. We are pioneers 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 celebrated a significant milestone by being listed on the main board of Shanghai, marking a historic first for engineered composite piping systems in China.

Outstanding Technical Research and Development Capabilities
Our national CNAS laboratory is furnished with state-of-the-art testing equipment, facilitating the development of new products, materials, and connection types. This rigorous testing ensures our product quality remains consistently stable and reliable, reinforcing our unwavering commitment to excellence.

Certifications

Packaging & Shipping

Donghong has established strategic partnerships with over five elite 5A-level logistics companies, backed by extensive years of transportation expertise. Whether by automobile, railway, port, or shipping logistics, our multifaceted approach ensures seamless service regardless of challenging weather or remote locations. Our robust transportation strategy guarantees prompt delivery of every shipment to your site, providing you with unparalleled service efficiency and reliability.

FAQ

1. Does your product meet international standards?
Our products proudly go beyond international standards, having earned prestigious certifications such as CE, BV, ISO, and WAR. Each specification not only meets but surpasses the necessary criteria. Share your required national standard, and we will validate or test it to ensure unequivocal compliance.

2. What kinds of services do you offer?
As a preeminent manufacturing factory, we offer a comprehensive array of pipe products, fittings, meticulous packaging, and efficient shipping solutions. Our consultancy services encompass expert project advice, bespoke pipe system solutions, and specialized design recommendations. Moreover, as an engineering-centric enterprise, we excel in pipeline contracting, professional repair services, and provide complimentary maintenance guidance, ensuring seamless and uninterrupted operations for all your projects.

3. Do you support OEM/ODM services?
Absolutely. We offer an extensive range of customization options, including materials, specifications, logos, packaging, and connection methods. Our proficient team delivers tailored solutions that meet unique project requirements, with numerous successful cases epitomizing our superior service quality.

4. What are your terms of payment?
For your convenience, we accept payments via T/T or L/C at sight.

5. How can you guarantee the quality of your goods?
We warmly invite all customers to visit our state-of-the-art facility and witness the unparalleled quality of our products firsthand. Additionally, we conduct rigorous tests based on customer requests before finalizing any orders. We also offer pre-production samples for thorough customer testing, ensuring complete satisfaction and qualification prior to commencing bulk production.