High Density Foam Insulation for Ppu Pipe, Tube in Underground Systems

• 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 Density Foam Insulation for PPU Pipe, Tube in Underground Systems. Specifically engineered for underground applications, our pre-insulated pipe systems ensure optimal thermal insulation and robustness, making them the perfect choice for demanding mining operations. Trust in the superior quality and advanced technology of our insulation pipe systems to significantly enhance the performance and longevity of your infrastructure.

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

Our system features an innovative stent-free foaming platform, eliminating the stent effect that causes significant heat loss. The outer sheath is crafted from a specialized, modified anti-static flame-retardant polyethylene material, formed through a single spiral extruder extrusion process. This ensures a seamless bond between the foamed insulation layer and the polyethylene layer, preventing any delamination of the insulation pipe. The DHPI mining thermal insulation pipe stands out with its superior impact resistance, excellent isolation properties, and remarkable corrosion resistance.

1. Working Steel Pipe: Expertly crafted from seamless steel pipe, spiral welded pipe, and straight seam welded pipe. Before insulation, our pipes undergo rigorous mechanical rust removal, achieving a quality standard of no less than GB/T8923.1 Sa level 2.5.
2. Slepipe: Meticulously engineered with specially modified flame-retardant and anti-static polyethylene resin, processed using a single screw extrusion machine. This grants our pipes exceptional impact resistance, outstanding isolation, and formidable corrosion resistance.
3. Polyurethane Insulation Layer: Our advanced technology injects modified flame-retardant polyurethane foam under high pressure to fill the gap between the casing and the working steel pipe. This creates an unparalleled insulation effect, characterized by minimal thermal conductivity, high compression strength, low water absorption, and an elevated closure rate.

1. Our system eliminates the need for support structures, significantly reducing heat loss, and completely eradicating the 'support thermal bridge' phenomenon.
2. Boasting high strength and superior toughness, our pipes are easily welded and allow for convenient construction.
3. With low thermal conductivity and robust waterproof and corrosion resistance, our pipes are ideal for direct burial in the ground or underwater applications.
4. Ensures effortless connection through flange or quick joint connections.
5. Designed for longevity, our pipes offer a long service life, withstanding harsh environments from -20ºC to 120ºC for over 30 years.

Connection Method

Diverse Connection Methods: Shandong Donghong Pipe Industry Co., Ltd. offers a wide array of connection methods for our High Density Foam Insulation for PPU Pipe, Tube in Underground Systems. These methods ensure secure, efficient, and reliable installations tailored to meet the varying demands of different projects.

Flange connection

Flexible socket connection

Comprehensive Demonstration of Welding Joints: Our experts provide detailed demonstrations of welding joints, showcasing the strength and durability of the connections used in our High Density Foam Insulation for PPU Pipe, Tube in Underground Systems. Witness the precision and expertise that go into ensuring top-notch quality in every installation.

Appliation Cases

Insulation steel pipes are indispensable in liquid and gas transmission pipe insulation projects across various sectors such as petroleum, 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 a premier choice, offering exceptional thermal insulation performance, unparalleled safety and reliability, and notably reduced construction costs. Our products have been extensively used in significant projects, consistently demonstrating excellence in efficiency and sustainability.

Company Profile

Shandong Donghong Pipe Industry Co., Ltd. (referred to as: Donghong Co., Ltd., stock code: 603856) is headquartered in Qufu, China, the honored hometown of Confucius. We stand as a distinguished leader in engineering pipeline manufacturing, offering comprehensive solutions and services in pipeline engineering, and serving as a trusted general contractor. Our core expertise encompasses four principal categories of functional and customized pipeline solutions: specialized pipelines for rainwater and sewage diversion, municipal sectors, industrial and mining zones, and national key engineering projects. By nurturing an industrial ecosystem that seamlessly integrates design institutes, financial institutions, port logistics, construction units, and both upstream and downstream enterprises, Donghong Co., Ltd. is dedicated to revolutionizing the global pipeline landscape. Our mission is to spearhead intelligent pipeline solutions that elevate human life and ensure the unceasing safety of pipeline transportation.

Donghong proudly boasts a team of over 200 R&D professionals and holds an impressive portfolio of more than 100 patents. Our innovation hub is fortified by eminent national technology platforms including the enterprise technology center, CNAS laboratory, academician expert workstation, and post-doctoral workstation. We are at the vanguard of researching and pioneering the digitalization, informatization, and intelligentization of pipeline engineering, propelling industry advancements and setting new standards of excellence.
In November 2017, Donghong celebrated a landmark achievement by being listed on the main board of Shanghai, representing a historic first for engineered composite piping systems in China.

Outstanding Technical Research and Development Capabilities
Our national CNAS laboratory is outfitted with state-of-the-art testing equipment, empowering the development of cutting-edge products, materials, and connection types. This meticulous testing guarantees our product quality remains consistently stable and reliable, underscoring our steadfast 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. With Donghong, you can expect a transportation network that leverages cutting-edge logistics solutions and a dedication to punctuality, ensuring that your products arrive safely and on time, every time. Experience the peace of mind that comes with our comprehensive delivery services, tailored to meet your unique needs and exceed your expectations.

FAQ

1. Does your product meet international standards?
Our products not only meet but proudly surpass international standards, boasting prestigious certifications such as CE, BV, ISO, and WAR. Every specification exceeds the required criteria, ensuring unparalleled quality and reliability. Simply let us know your specific national standard, and our team will verify or conduct tests to confirm compliance, guaranteeing that our products meet your exact requirements.

2. What kinds of services do you offer?
As a leading manufacturing factory, Shandong Donghong Pipe Industry Co., Ltd. offers a comprehensive suite of services. We provide an extensive range of high-quality pipe products and fittings, along with complete packaging and efficient shipping solutions. Our consultancy services encompass expert project advice, customized pipe system solutions, and specialized design recommendations. Additionally, as an engineering-focused enterprise, we excel in pipeline contracting, professional repair services, and complimentary maintenance guidance, ensuring seamless and efficient operations for your projects.

3. Do you support OEM/ODM services?
Absolutely. We offer extensive customization options, including materials, specifications, logos, packaging, and connection methods. Our proficient team is dedicated to delivering tailored solutions for unique project requirements. With numerous successful cases exemplifying our superior service, you can trust us to meet your specific needs with excellence and precision.

4. What are your terms of payment?
For your convenience, we accommodate payments via T/T (Telegraphic Transfer) or L/C (Letter of Credit) at sight.

5. How can you guarantee the quality of your goods?
We wholeheartedly invite all customers to visit our state-of-the-art facility and witness our product quality firsthand. Rigorous tests are conducted as per customer requests before finalizing orders to ensure top-notch quality. Additionally, we can provide pre-production samples for thorough customer testing, guaranteeing complete satisfaction and qualification before commencing bulk production.