Introducing the Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP), a groundbreaking advancement in the mining industry. This pipe features a formidable mesh skeleton crafted from high-strength steel wires, meticulously helically twisted and molded to ensure unparalleled performance. Encased in modified flame-retardant and antistatic high-density polyethylene (HDPE), it is bonded with high-performance adhesive resin. This cutting-edge design seamlessly fuses the robustness of steel with the flexibility of plastic, making it the ideal solution for a wide array of applications including underground water supply and drainage, slurry spraying, gas extraction, and air pressure management.
Polyethylene Raw Materials: Our polyethylene resin, used in coal mining environments, is meticulously crafted from flame-retardant and antistatic specially modified materials. This includes innovative carbon nanotube (CNT) modifications and permanent coloring materials, all developed with our independent intellectual property rights. Compliant with MT181 and MT558.1 standards, these pipes offer superior mechanical properties to meet the demanding needs of mining operations.
Enhanced Steel Wire: We employ copper-plated steel wire that adheres to GB/T14450 standards, boasting an impressive strength of 2050MPA-exceeding the standard requirement of 1850MPA. This ensures robust and reliable performance in all applications.
Adhesive Resin: Our proprietary adhesive resin, developed with our independent intellectual property rights, is engineered for exceptional steel wire adhesion and outstanding process adaptability, setting a new benchmark in the industry.
| 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. takes pride in its cutting-edge high-pressure pipe fittings factory, which is dedicated to crafting an extensive array of high-pressure engineering fittings. We extend our expertise to provide bespoke customization services, perfectly tailoring special fittings to cater to distinct customer needs, as well as diverse industrial and mining conditions. Our manufacturing ethos revolves around the principle of 'good connection to achieve a good system.' This commitment guarantees exceptional performance and unwavering reliability in every project we undertake.
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 has risen to be a premier manufacturer and service provider in the engineering pipeline sector. As a general contractor for pipeline engineering projects, we offer an extensive range of functional and customized pipelines in four major categories: 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 debuted 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 including the national enterprise technology center, CNAS laboratory, academician expert workstation, and postdoctoral workstation. Our relentless commitment to innovation drives our research into the digitalization, informatization, and intelligence of pipeline engineering, solidifying Donghong's position as a leader in the industry.
At the forefront of pivotal national and livelihood projects, Donghong champions the development of the engineering pipeline industry. Our noteworthy contributions include landmark projects such as 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 numerous other essential infrastructure endeavors.
Experimental Verification
Key Raw Materials
The binder resin is a pivotal element of our Srtp HDPE Pipe, ensuring seamless stress distribution during pipe pressure phases. It stands as a crucial composite material, with its performance directly affecting the product's excellence. At Shandong Donghong Pipe Industry Co., Ltd., we have established an advanced raw material design and development platform. This bespoke platform is meticulously crafted to elevate the binder resin's capabilities, guaranteeing perfect alignment with our manufacturing processes and machinery, thus ensuring superior product quality.
Our innovative plating technology serves a dual function: it not only provides exceptional corrosion resistance but also enhances the shear strength between the steel wire and bonding resin. Through rigorous data testing and comparative analysis, we've determined that tin bronze exhibits an average shear strength of 20.69MPa, significantly outperforming brass, which averages 11.42MPa. These findings underscore the substantial differences in shear strength with various plating and bonding resins. Accordingly, we have selected tin bronze-plated steel wire as our primary pressure-bearing substrate for its unmatched performance and reliability.
Key Industrial and Mining Application Cases
Xinjiang Key Project Construction - Process Pipeline for Potassium Salt in Lop Nur, Xinjiang
This nationally significant investment project in Xinjiang Lop Nur is centered around salt chemical processes, and it demands exceptional annual conveying capacity, pipe bending resistance, and interface stability. The expert technical team at Donghong meticulously crafted a bespoke, non-standard product structure and interface program to meet these unique project requirements. Furthermore, Donghong Pipeline Engineering Company expertly managed the entire construction process, ensuring efficient and reliable pipeline operation.
Wet Copper Refining Project in Kazakhstan
This project involves the open-air transportation of extremely corrosive copper sulfate media. Donghong's high-pressure, corrosion-resistant SRTP, integrated with Composite500 steel-plastic composite technology and Seal-Seal double-seal connection technology, provides an unparalleled solution for the corrosion-resistant transport of these specialized media, ensuring durability and reliability.
"One Belt, One Road" - Indonesia OBI Nickel and Cobalt Project Deep Sea Landfill Project
Situated on Obi Island in North Maluku Province, Indonesia, this ambitious project is helmed by U.S. Borealis (Beijing) Pipeline Technology Co., Ltd. After comprehensive economic investment comparisons and operation and maintenance safety assessments, the deep-sea landfill (DSTP) system was selected. The project utilizes DN1000*1.6MPa steel wire mesh skeleton polyethylene composite pipes, valued at 66.484 million yuan, exemplifying Donghong's cutting-edge expertise and innovative solutions.
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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