Thermal Pipe Insulation with Ppu Pipe, Tube and Rigid Foam Lagging

• Application: Chemical Transport, Industrial Processing, Oil and Gas Distribution, Wastewater Management, Water Supply, Thermal Insulation
• certification: CE, ISO9001
• Connection Type: Flanged Joint
• Diameter: 90mm-955mm
• Material: Dhpe and Ppu
• Temperature Range: -20℃ to 80℃
• Model NO.: DH-The thermal insulation-BWGG
• 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: Unleash the ultimate in efficiency and dependability with Shandong Donghong Pipe Industry Co., Ltd.'s state-of-the-art high-temperature PPU pipes. Expertly designed for subterranean environments, our tubes with pre-insulated pipe systems offer exceptional thermal insulation and unparalleled durability. Perfectly suited for mining operations, our pipe systems stand out for their superior quality and advanced technology, ensuring your infrastructure performs optimally and lasts longer. Choose our insulation pipe systems to elevate the performance and lifespan of your mining equipment.

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 groundbreaking system boasts a pioneering stent-free foaming platform, completely eliminating the detrimental stent effect that causes significant heat loss. The exterior sheath is meticulously constructed from a specialized, modified anti-static flame-retardant polyethylene material, expertly formed through a single spiral extruder extrusion process. This technology ensures a flawless bond between the foamed insulation layer and the polyethylene sheath, effectively preventing any delamination of the insulation pipe. The DHPI mining thermal insulation pipe is distinguished by its superior impact resistance, exceptional isolation properties, and outstanding corrosion resistance.

1. Working Steel Pipe: Meticulously crafted from high-quality seamless steel pipe, spiral welded pipe, and straight seam welded pipe. Before insulation, our pipes undergo rigorous mechanical rust removal, achieving a pristine quality standard no less than GB/T8923.1 Sa level 2.5.
2. Slepipe: Skillfully engineered with specially modified flame-retardant and anti-static polyethylene resin, processed using a state-of-the-art single screw extrusion machine. This precision engineering endows our pipes with extraordinary impact resistance, exceptional isolation, and robust corrosion resistance.
3. Polyurethane Insulation Layer: Utilizing our cutting-edge technology, modified flame-retardant polyurethane foam is injected under high pressure to seamlessly fill the gap between the casing and the working steel pipe. This results in an unmatched insulation effect, characterized by minimal thermal conductivity, high compression strength, low water absorption, and a remarkably high closure rate.

1. Our innovative system eliminates the need for support structures, significantly minimizing heat loss and completely eradicating the 'support thermal bridge' phenomenon.
2. Featuring high strength and superior toughness, our pipes are easily welded, ensuring convenient construction and long-lasting durability.
3. With extraordinarily low thermal conductivity, robust waterproofing, and exceptional corrosion resistance, our pipes are ideal for direct burial in the ground or underwater applications, ensuring reliable performance in diverse environments.
4. Ensures user-friendly connections through versatile flange or quick joint systems, facilitating efficient and secure installations.
5. Built for endurance, our pipes are designed to offer a prolonged service life, enduring harsh environments ranging from -20ºC to 120ºC for over 30 years, delivering unmatched reliability and performance.

Connection Method

Diverse and Reliable Connection Methods

Flange connection

Flexible socket connection

Comprehensive Demonstration of Precision Welding Joints

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.

Company Profile

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. We are a premier engineering pipeline manufacturer, a comprehensive service provider in pipeline engineering, and a trusted general contractor. 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 industrial ecosystem that integrates 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 team of over 200 R&D professionals and holds more than 100 patents. Our innovation is anchored by national technology platforms such as the enterprise technology center, CNAS laboratory, academician expert workstation, and post-doctoral workstation. We are at the forefront of 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.

Outstanding Technical Research and Development Capabilities
Our national CNAS laboratory is equipped with cutting-edge testing equipment, facilitating the development of new products, materials, and connection types. This rigorous testing ensures our product quality remains consistently stable and reliable, maintaining 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 not only meet but proudly surpass international standards, boasting certifications such as CE, BV, ISO, and WAR. Each specification exceeds the required criteria, ensuring exceptional quality. Simply specify your national standard, and we will validate or test our products to confirm their compliance.

2. What kinds of services do you offer?
As an industry-leading manufacturer, we offer a comprehensive suite of services including a diverse range of pipe products, fittings, complete packaging, and efficient shipping solutions. Our consultancy services extend to expert project advice, customized pipe system solutions, and specialized design recommendations tailored to your needs. Additionally, as an engineering-focused enterprise, we excel in pipeline contracting, professional repair services, and provide complimentary maintenance guidance, ensuring seamless project execution and operational excellence.

3. Do you support OEM/ODM services?
Absolutely. We provide extensive customization options covering materials, specifications, logos, packaging, and connection methods. Our proficient team excels in delivering tailored solutions to meet unique project requirements, with numerous successful cases showcasing our superior service and commitment to excellence.

4. What are your terms of payment?
For your convenience, we accommodate payments via T/T and L/C at sight, ensuring a smooth transaction process.

5. How can you guarantee the quality of your goods?
We warmly welcome all customers to visit our facility and witness our exceptional product quality firsthand. We conduct rigorous tests as per customer requests prior to finalizing orders. Furthermore, we provide pre-production samples for customer testing, ensuring total satisfaction and qualification before proceeding to bulk production.