Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP): Step into the future of mining technology with our groundbreaking SRTP/SRCP pipes. Reinforced with high-strength steel wire mesh, helically twisted and expertly molded on both sides, these pipes are further enhanced by modified flame-retardant and antistatic high-density polyethylene (HDPE). This sophisticated combination ensures unmatched durability and superior performance. The high-performance adhesive resin bonds the steel wire skeleton seamlessly to the HDPE layers, merging the strength of steel with the adaptability of plastic. Perfect for underground water supply and drainage, slurry spraying, gas extraction, and air pressure applications, our composite pipes are designed to exceed the rigorous demands of the mining industry.
Polyethylene Raw Materials: In the specialized field of coal mining, the inner and outer layers of polyethylene resin are meticulously crafted from flame-retardant and antistatic materials, including carbon nanotube (CNT) modified substances and permanently colored special materials. These cutting-edge materials are developed using the company's exclusive intellectual property. Not only do they comply with MT181 and MT558.1 standards, but they also significantly enhance the mechanical properties of our pipes, making them robust and reliable for the toughest conditions.
Enhanced Steel Wire: Our pipes feature copper-plated steel wire that meets the stringent GB/T14450 standards, offering an extraordinary strength of 2050 MPa, which greatly exceeds the standard 1850 MPa. This ensures exceptional durability and reliability, even in the most demanding environments.
Adhesive Resin: Our innovative adhesive resin, developed with the company's proprietary technology, provides exceptional adhesion to steel wire and boasts outstanding process adaptability. This breakthrough ensures a robust bond, significantly enhancing the overall structural integrity of the composite pipes.
OD
dn/mm |
PN MPa |
| 0.8 |
1.0 |
1.25 |
1.6 |
2.0 |
2.5 |
3.5 |
| Nominal Wall Thickness / mm |
| 50 |
|
|
|
4.5 |
5.0 |
5.5 |
5.5 |
| 63 |
4.5 |
5.0 |
5.5 |
5.5 |
| 75 |
5.0 |
5.0 |
5.5 |
6.0 |
| 90 |
5.5 |
5.5 |
5.5 |
6.0 |
| 110 |
5.5 |
5.5 |
7.0 |
7.0 |
7.5 |
8.5 |
| 140 |
5.5 |
5.5 |
8.0 |
8.5 |
9.0 |
9.5 |
| 160 |
6.0 |
6.0 |
9.0 |
9.5 |
10.0 |
10.5 |
| 200 |
6.0 |
6.0 |
9.5 |
10.5 |
11.0 |
12.5 |
| 225 |
8.0 |
8.0 |
10.0 |
10.5 |
11.0 |
|
| 250 |
8.0 |
10.5 |
10.5 |
12.0 |
12.0 |
12.5 |
| 315 |
9.5 |
11.5 |
11.5 |
13.0 |
13.0 |
|
| 355 |
10.0 |
12.0 |
12.0 |
14.0 |
|
| 400 |
10.5 |
12.5 |
12.5 |
15.0 |
| 450 |
11.5 |
13.5 |
13.5 |
16.0 |
| 500 |
12.5 |
15.5 |
15.5 |
18.0 |
| 560 |
17.0 |
20.0 |
|
|
| 630 |
20.0 |
23.0 |
1. Shandong Donghong Pipe Industry Co., Ltd. stands at the forefront of innovation, being the first enterprise to develop medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products with a breakthrough connection method. This pioneering approach sets us apart in the industry.
2. Leading the way, we introduced the steel wire mesh skeleton polyethylene composite pipe meticulously engineered for underground coal mines, demonstrating our commitment to safety and durability in challenging environments.
3. As trailblazers, we were the first to promote the use of wire mesh skeleton polyethylene composite pipes in the coal mining sector, setting a new benchmark and elevating industry standards.
4. Our unparalleled innovation led us to create wire mesh skeleton polyethylene composite pipe products that can withstand pressures exceeding 3.5MPa, showcasing our dedication to strength and reliability.
5. We revolutionized the market by developing the unique 'double sealing' and 'one-piece clamp' connection technology specifically for steel wire mesh skeleton polyethylene composite pipes used in underground coal mines, ensuring superior performance and safety.
The flanged connection integrates port sealing end faces directly within the pipe, expertly addressing the demands of high-pressure piping applications.
Outstanding Connection Features:
1) Enhanced automation for superior continuous production efficiency;
2) Streamlined process flow, facilitating easy control and dependable quality;
3) Integrated sealing end face and tube body structure, eliminating the need for secondary injection molding while offering exceptional pressure resistance;
4) Lengthened riveting structure at the fixed end face to mitigate system risks.
Robust Processing Capacity:
Supports dn50-dn315mm models with a pressure level connection capacity ranging from 0.8MPa to 10.0MPa; models dn355 and above extend the original double seal structure.
Advanced High-Pressure Clamp Connection: Utilizing specialized pipe end molding equipment, the steel wire pipe end is formed into a flange root-like structure. This, combined with the cast steel clamp, ensures a secure connection between the pipe bodies.
Key Connection Characteristics:
1) High structural strength derived directly from the tube body;
2) Quick and effortless mechanical connection, requiring no special equipment.
Streamlined Processing Capacity:
3) Simple and efficient connection process, demanding minimal technical expertise from personnel.
Versatile Processing Capacity:
Accommodates dn90-dn315mm models with a pressure level capacity of 1.6MPa to 3.5MPa.
Shandong Donghong Pipe Industry Co., Ltd. boasts a cutting-edge high-pressure pipe fittings factory, specializing in the production of a broad range of high-pressure engineering fittings. We also offer bespoke customization services to cater to unique customer needs and diverse industrial and mining conditions. Our manufacturing philosophy ensures 'Good Connection for an Excellent System,' delivering superior performance and reliability.
About
Us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856) proudly calls Qufu, the illustrious hometown of Confucius in China, its home. Established in 1997, Donghong has emerged as a premier manufacturer and service provider in the engineering pipeline sector. Our core business encompasses four major categories of functional and customized pipelines: rainwater and sewage drainage pipes, municipal pipelines, industrial and mining pipelines, and pipelines for national key projects. As a testament to our industry leadership, Donghong was listed on the main board of Shanghai on November 6, 2017, making history as China's first main board listed engineering composite pipeline manufacturer.
At Donghong, innovation is the heartbeat of our operations. With over 200 R&D personnel and more than 100 patents, we harness the capabilities of national enterprise technology centers, CNAS laboratories, academician expert workstations, and postdoctoral workstations to drive advancements in digitalization, informatization, and intelligence within the pipeline engineering realm. Our unwavering commitment to technological excellence ensures we remain at the forefront of industry advancements.
Dedicated to national strategic and livelihood projects, Donghong plays a pivotal role in major initiatives like the South-to-North Water Diversion, Hanjinwei, Beijing-Xinjiang Expressway, and the One Belt, One Road initiative. Our expertise extends to standardized farmland, urban and rural water supply integration, Liren gas projects, and centralized heating systems, solidifying our leadership in engineering pipeline solutions for a future that is both sustainable and prosperous.
Experimental Verification
Key Raw Materials
The binder resin is the cornerstone of our Composite HDPE Pipe with Steel Mesh. It plays a vital role in maintaining structural integrity during pipe pressure processes by ensuring efficient stress transfer. This essential composite material greatly impacts the overall quality of our products. At Shandong Donghong Pipe Industry Co., Ltd., we have developed a specialized raw material design and development platform. This platform is meticulously engineered to enhance the binder resin's performance, ensuring it is perfectly compatible with our advanced processes and state-of-the-art equipment.
Our plating process is designed to serve dual objectives: providing robust corrosion resistance and significantly enhancing the shear strength between the steel wire and the bonding resin. Extensive data testing and comparisons reveal that tin bronze plating offers an impressive average shear strength of 20.69MPa, compared to 11.42MPa for brass. These substantial differences in shear strength with various plating materials led us to select tin bronze-plated steel wire as our pressure-bearing substrate. This choice guarantees exceptional performance and unparalleled reliability.
Key Industrial and Mining Application Highlights
Xinjiang Key Project Construction: Process Pipeline for Potassium Salt in Lop Nur, Xinjiang
This pivotal national investment focuses on a salt chemical project in Xinjiang Lop Nur, featuring a highly demanding process pipeline. The annual conveying capacity, pipe bending resistance, and interface stability requirements are exceptionally rigorous. The expert technical team at Donghong meticulously designed and developed non-standard tailored product structures and interface solutions to meet these specific project conditions. Furthermore, Donghong Pipeline Engineering Company oversaw the entire construction process, ensuring optimal pipeline performance and operational efficiency.
Wet Copper Refining Project in Kazakhstan
For this challenging project involving open-air transportation of highly corrosive copper sulfate media, Donghong's state-of-the-art solutions were indispensable. Utilizing high-pressure corrosion-resistant SRTP, cutting-edge composite500 steel-plastic technology, and innovative double-seal connection technology, Donghong delivered unmatched performance and reliability in resisting corrosion and ensuring the safe transport of specialized media.
"One Belt, One Road"-Indonesia OBI Nickel and Cobalt Project Deep Sea Landfill Initiative
Located on Obi Island in North Maluku Province, Indonesia, this ambitious project was engineered by U.S. Borealis (Beijing) Pipeline Technology Co., Ltd. After a thorough analysis of economic investment, operational, and maintenance safety, the deep-sea landfill (DSTP) system was selected. The dn1000 * 1.6MPa steel wire mesh skeleton polyethylene composite pipe was ultimately chosen, underscoring Donghong's innovation and expertise. This intricate project is valued at 66.484 million yuan.
Donghong has established strategic partnerships with over five 5A-level logistics companies, bringing years of expertise in transportation. By integrating automobile, railway, port, and shipping logistics, we ensure seamless delivery regardless of climate, remoteness, or challenging conditions. Our robust transportation strategy guarantees prompt delivery to your designated location, offering you unparalleled service excellence.
1. Does your product meet international standards?
Our products have passed CE, BV, ISO, and Wars certifications, with all metrics exceeding standard requirements. Please inform us of the specific national standard you need, and we will verify or test it for you.
2. What kind of services do you offer?
As a manufacturing factory, we provide pipe products, pipe fittings, packaging, and shipping. As a professional consultation company, we offer project consulting advice, pipe system solutions, and design suggestions. As an engineering-focused enterprise, we also provide pipeline contractor services and pipe repair services, along with free maintenance guidance.
3. Do you support OEM/ODM services?
Absolutely. We offer customization in material, specifications, logo, packaging, and connection methods. Our expert team can also provide tailored solutions for your specific projects, with a track record of successful cases.
4. What are your terms of payment?
We accept T/T or L/C at sight.
5. How can you guarantee the quality of your products?
We warmly welcome all customers to visit our company and inspect our goods in person. We can also conduct rigorous testing as per customer requirements before an order is placed. Additionally, before mass production, we can dispatch samples for customers to perform their own tests to ensure product quality.
Audited Supplier 
){kind=link}
){kind=link}