Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP for short) is a revolutionary mining product. It boasts a robust mesh skeleton crafted from high-strength steel wires, helically twisted and molded for superior performance. Encased in modified flame-retardant and antistatic high-density polyethylene (HDPE), this composite pipe is bonded with high-performance adhesive resin. This innovative design harmonizes the strengths of both steel and plastic pipes, making it an optimal choice for a multitude of applications including underground water supply and drainage, slurry spraying, gas extraction, and air pressure management.
Polyethylene Raw Materials: The inner and outer polyethylene resin used in coal mining fields is crafted from flame-retardant and antistatic special modified materials. These materials, which include carbon nanotube (CNT) modifications and permanent coloring special materials, are developed with independent intellectual property rights. Meeting the MT181 and MT558.1 standards, these pipes offer enhanced mechanical properties.
Enhanced Steel Wire: We utilize copper-plated steel wire that meets GB/T14450 standards. With a strength of 2050MPA, it significantly surpasses the standard requirement of 1850MPA, ensuring robust performance.
Adhesive Resin: Our patented product, developed with our independent intellectual property rights, features exceptional steel wire adhesion and remarkable process adaptability, setting a new industry standard.
| Nominal diamter /mm |
Nominal Pressure / Mpa |
| 0.8 |
1.0 |
1.25 |
1.6 |
2.0 |
2.5 |
3.0 |
3.5 |
4.0 |
5.0 |
6.3 |
7.0 |
8.0 |
9.0 |
10.0 |
11.0 |
12.0 |
13.0 |
14.0 |
15.0 |
| Nominal Wall Thickness / mm |
| 50 |
/ |
/ |
/ |
4.5 |
5.0 |
5.5 |
5.5 |
5.5 |
6.0 |
8.5 |
9.0 |
9.5 |
10.0 |
10.0 |
10.0 |
10.0 |
10.0 |
10.0 |
10.5 |
10.5 |
| 63 |
/ |
/ |
/ |
4.5 |
5.0 |
5.5 |
5.5 |
5.5 |
6.5 |
8.5 |
9.0 |
10.0 |
10.0 |
10.0 |
10.0 |
10.5 |
10.5 |
11.5 |
11.0 |
11.0 |
| 75 |
/ |
/ |
/ |
5.0 |
5.0 |
5.5. |
6.0 |
6.0 |
9.5 |
9.5 |
9.5 |
10.5 |
10.5 |
10.5 |
11.5 |
11.5 |
12.0 |
12.0 |
12.0 |
12.0 |
| 90 |
/ |
/ |
/ |
5.5 |
5.5 |
5.5 |
6.0 |
6.0 |
10.0 |
10.5 |
10.5 |
11.5 |
11.5 |
11.5 |
12.0 |
12.0 |
12.0 |
12.0 |
12.5 |
13.0 |
| 110 |
/ |
5.5 |
5.5 |
7.0 |
7.0 |
7.5 |
8.5 |
8.5 |
11.0 |
12.0 |
12.0 |
12.0 |
12.0 |
13.0 |
13.0 |
13.5 |
13.5 |
14.5 |
14.5 |
15.5 |
| 125 |
/ |
5.5 |
5.5 |
7.5 |
8.0 |
8.5 |
9.5 |
9.5 |
11.0 |
11.0 |
12.0 |
12.0 |
13.0 |
13.0 |
15.0 |
15.0 |
15.0 |
15.0 |
15.5 |
15.5 |
| 140 |
/ |
5.5 |
5.5 |
8.0 |
8.5 |
9.0 |
9.5 |
9.5 |
11.0 |
11.0 |
13.0 |
13.0 |
15.0 |
15.0 |
15.0 |
15.0 |
15.0 |
15.0 |
16.0 |
16.5 |
| 160 |
/ |
6.0 |
6.0 |
9.0 |
9.5 |
10.0 |
10.5 |
10.5 |
11.0 |
12.0 |
14.0 |
14.0 |
15.0 |
15.0 |
15.0 |
15.5 |
16.0 |
16.0 |
17.0 |
17.0 |
| 180 |
/ |
6.0 |
6.0 |
9.5 |
10.5 |
1.0 |
12.0 |
12.5 |
13.0 |
13.0 |
14.0 |
15.0 |
15.0 |
15.0 |
15.0 |
15.5 |
16.0 |
17.0 |
/ |
/ |
| 200 |
/ |
6.0 |
6.0 |
9.5 |
10.5 |
11.0 |
12.0 |
12.5 |
13.0 |
13.0 |
15.0 |
15.0 |
15.0 |
15.0 |
16.0 |
17.0 |
17.0 |
/ |
/ |
/ |
| 225 |
/ |
8.0 |
8.0 |
10.0 |
10.5 |
11.0 |
12.0 |
13.0 |
13.0 |
13.0 |
14.0 |
15.0 |
16.0 |
17.0 |
17.0 |
/ |
/ |
/ |
/ |
/ |
| 250 |
8.0 |
10.5 |
10.5 |
12.0 |
12.0 |
12.5 |
14.0 |
14.0 |
14.0 |
15.0 |
16.0 |
17.0 |
17.0 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
| 280 |
9.5 |
11.0 |
11.0 |
13.0 |
13.0 |
15.0 |
15.0 |
17.0 |
17.0 |
18.0 |
18.0 |
19.0 |
20.0 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
| 315 |
9.5 |
11.5 |
11.5 |
13.0 |
13.0 |
15.0 |
15.0 |
18.0 |
18.0 |
19.0 |
20.0 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
| 355 |
10.0 |
12.0 |
12.0 |
14.0 |
14.0 |
17.0 |
17.0 |
19.0 |
19.0 |
20.0 |
21.0 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
| 400 |
10.5 |
12.5 |
12.5 |
15.0 |
16.0 |
17.0 |
17.0 |
19.0 |
21.0 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
| 450 |
11.5 |
13.5 |
13.5 |
16.0 |
18.0 |
18.0 |
19.0 |
20.0 |
21.0 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
| 500 |
12.5 |
15.5 |
15.5 |
18.0 |
19.0 |
22.0 |
23.0 |
24.0 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
| 560 |
17.0 |
20.0 |
20.0 |
22.0 |
22.0 |
24.0 |
26.0 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
| 630 |
20.2 |
23.0 |
23.0 |
26.0 |
26.0 |
28.0 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
| 710 |
23.0 |
26.0 |
28.0 |
30.0 |
32.0 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
| 800 |
27.0 |
30.0 |
32.0 |
34.0 |
36.0 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
| 900 |
29.0 |
33.5 |
35.0 |
38.0 |
40.0 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
| 1000 |
34.0 |
37.0 |
40.0 |
45.0 |
47.0 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
| 1200 |
38.0 |
40.0 |
43.0 |
50.0 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
| Note: can be customized by customer's needs. |
1. The pioneering enterprise that developed medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products, along with their innovative connection methods.
2. The trailblazing company that introduced steel wire mesh skeleton polyethylene composite pipes specifically designed for underground coal mines.
3. The groundbreaking entity that not only promoted wire mesh skeleton polyethylene composite pipes for underground coal mines but also revolutionized the industry with its cutting-edge offerings.
4. The foremost enterprise in developing wire mesh skeleton polyethylene composite pipe products capable of withstanding pressures above 3.5MPa.
5. The leading company to create and implement the 'double sealing' and 'one-piece clamp' connection technology for steel wire mesh skeleton polyethylene composite pipes in underground coal mines.
Shandong Donghong Pipe Industry Co., Ltd. has proudly established a state-of-the-art high-pressure pipe fittings factory, dedicated to producing a wide range of high-pressure engineering fittings. We also offer bespoke customization services, tailoring special fittings to meet unique customer requirements and specific industrial and mining conditions. Our manufacturing philosophy is centered on achieving 'good connection to achieve a good system,' ensuring unparalleled performance and reliability for every project.
About
us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856) is strategically headquartered in the historic city of Qufu, China, the hometown of Confucius. Founded in 1997, Donghong stands as a premier manufacturer and service provider in the engineering pipeline sector. We excel as a general contractor for pipeline engineering projects, offering 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. Celebrated as the first main board listed engineering composite pipeline manufacturer in China, Donghong proudly listed on the Shanghai main board on November 6, 2017.
Boasting a robust team of over 200 R&D personnel and an impressive portfolio of over 100 patents, Donghong leverages national technological platforms such as the national enterprise technology center, CNAS laboratory, academician expert workstation, and postdoctoral workstation. Our commitment to innovation drives our research into the digitalization, informatization, and intelligence of pipeline engineering, positioning Donghong as a leader in the industry.
Donghong is at the forefront of pivotal national and livelihood projects, championing the development of the engineering pipeline industry. Our noteworthy contributions include projects like the South-to-North Water Diversion, Hanjinwei, Beijing-Xinjiang Expressway, One Belt, One Road initiatives, standardized farmland, urban-rural water supply integration, Liren gas, centralized heating, and many more essential infrastructure endeavors.
Experimental Verification
Key Raw Materials
The binder resin is a critical component of our Srtp HDPE Pipe, facilitating the smooth transfer of stress during the pipe pressure process. It is one of the essential composite materials, and its performance significantly impacts the product's quality. At Shandong Donghong Pipe Industry Co., Ltd., we have developed a specialized raw material design and development platform. This platform is tailored to enhance the binder resin's performance, ensuring optimal compatibility with our processes and equipment.
Plating serves a dual purpose: providing corrosion protection and enhancing the shear strength between the steel wire and bonding resin. Our data testing and comparisons reveal that tin bronze averages a shear strength of 20.69MPa, while brass averages 11.42MPa, highlighting substantial differences in shear strength with various plating and bonding resins. Consequently, we have chosen tin bronze-plated steel wire as our pressure-bearing substrate due to its superior performance.
Key Industrial and Mining Application Cases
Xinjiang Key Project Construction - Process Pipeline for Potassium Salt in Lop Nur, Xinjiang
This national key investment project in Xinjiang Lop Nur focuses on salt chemical processes, featuring stringent requirements for annual conveying capacity, pipe bending resistance, and interface stability. Donghong's technical team meticulously designed and developed a non-standard, customized product structure and interface program tailored to these unique project specifications. Additionally, Donghong Pipeline Engineering Company oversaw the entire construction process, ensuring the pipeline's efficient operation.
Wet Copper Refining Project in Kazakhstan
This project necessitates open-air transportation of highly corrosive copper sulfate media. Donghong's high-pressure, corrosion-resistant SRTP, combined with Composite500 steel-plastic composite technology and Seal-Seal double-seal connection technology, offers an impeccable solution for the corrosion-resistant transport of these specialized media.
"One Belt, One Road" - Indonesia OBI Nickel and Cobalt Project Deep Sea Landfill Project
Located on Obi Island in North Maluku Province, Indonesia, this project is undertaken by U.S. Borealis (Beijing) Pipeline Technology Co., Ltd. The deep-sea landfill (DSTP) system was chosen after thorough economic investment comparisons and operation and maintenance safety assessments. The project employs DN1000*1.6MPa steel wire mesh skeleton polyethylene composite pipes, valued at 66.484 million yuan, showcasing Donghong's expertise and innovation.
Our longstanding partnerships with numerous logistics companies have enabled us to develop an advanced and efficient transportation mode. By seamlessly integrating "steam transportation + railroad transportation + port and shipping logistics," we offer our customers the most effective and reliable transportation solutions available.
Leveraging our extensive transportation experience, we ensure that regardless of extreme temperatures, isolated locations, or challenging environments, our meticulously planned logistics guarantee that each batch of goods reaches its destination promptly and securely.
1. Is your product meets the international standard?
Our products have surpassed CE, BV, ISO, and WARS certifications, exceeding standard requirements. Feel free to let us know the specific national standard you need, and we will verify or test it for you to ensure compliance.
2. What kind of service do you offer?
As a manufacturing factory, we provide pipe products, fittings, packaging, and shipping services. As a professional consulting company, we offer project advice, pipe system solutions, and design recommendations. Additionally, as an engineering-focused enterprise, we provide pipeline contracting, repair services, and free maintenance guidance.
3. Do you support OEM/ODM service?
Yes, we offer customization in materials, specifications, logos, packaging, connection methods, and more. Our expert team can provide tailored solutions for your specific projects, with numerous successful case studies to back our capabilities.
4. What's your terms of payment?
We accept T/T or L/C at sight.
5. How can you guarantee the goods you offer are qualified?
We enthusiastically welcome all customers to visit our company and inspect our products firsthand. We can also perform stringent tests as per your requirements before you place an order. Additionally, we can send samples prior to bulk production for your own testing and qualification.
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