Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP for short) is a groundbreaking mining solution. Engineered with a formidable mesh skeleton made from high-tensile steel wires, intricately helically twisted and expertly molded, this composite pipe guarantees unparalleled performance. It is enveloped in specially modified flame-retardant and antistatic high-density polyethylene (HDPE), seamlessly bonded with top-tier adhesive resin. This advanced design synergistically combines the advantages of steel and plastic, making it the ultimate choice for a wide array of applications, such as underground water supply and drainage, slurry spraying, gas extraction, and air pressure management.
Polyethylene Raw Materials: The inner and outer polyethylene resin utilized in coal mining fields is meticulously crafted from flame-retardant and antistatic special modified materials. Featuring carbon nanotube (CNT) modifications and permanent coloring special materials, these pipes boast materials that hold independent intellectual property rights. Conforming to MT181 and MT558.1 standards, these pipes deliver superior mechanical properties.
Enhanced Steel Wire: Our copper-plated steel wire, adhering to GB/T14450 standards, offers a formidable strength of 2050MPA, far exceeding the standard requirement of 1850MPA. This ensures outstanding robustness and reliability.
Adhesive Resin: Our proprietary adhesive resin, born from our independent intellectual property innovations, features exceptional adhesion to steel wire and remarkable process adaptability. This sets 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. has proudly established a state-of-the-art high-pressure pipe fittings factory. Our facility is dedicated to producing an extensive range of top-tier high-pressure engineering fittings. Furthermore, we excel in offering bespoke customization services, tailoring special fittings to meet unique customer requirements and specific industrial and mining conditions. Our manufacturing philosophy revolves around achieving 'good connection to achieve a good system,' ensuring unparalleled performance, reliability, and excellence for every project.
About
us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856) strategically resides in the historic city of Qufu, China, the revered hometown of Confucius. Established in 1997, Donghong has risen to prominence as a premier manufacturer and service provider in the engineering pipeline sector. As a general contractor for extensive pipeline projects, we specialize in four key categories of pipelines: rainwater and sewage drainage pipes, municipal pipelines, industrial and mining pipelines, and those for national key projects. Notably, Donghong has the distinction of being the first main board listed engineering composite pipeline manufacturer in China, proudly debuting on the Shanghai main board on November 6, 2017.
With a formidable team of over 200 R&D experts and an impressive array of over 100 patents, Donghong harnesses national technological platforms such as the national enterprise technology center, CNAS laboratory, academician expert workstation, and postdoctoral workstation. Our unwavering commitment to innovation spearheads our research into the digitalization, informatization, and intelligence of pipeline engineering, solidifying Donghong's stature as a leader within the industry.
Donghong is a trailblazer in critical national and community-driven projects, pioneering the advancement of the engineering pipeline industry. Our significant contributions span monumental undertakings such as the South-to-North Water Diversion, Hanjinwei, Beijing-Xinjiang Expressway, One Belt, One Road initiatives, standardized farmland projects, urban-rural water supply integration, Liren gas, centralized heating, among other vital infrastructure projects.
Experimental Verification
Key Raw Materials
The binder resin is a pivotal element in our SRTP HDPE Pipe, engineered to facilitate seamless stress transfer during pipe operation under pressure. It stands as a fundamental composite material, with its performance being integral to the overall quality of our products. At Shandong Donghong Pipe Industry Co., Ltd., we have pioneered an advanced raw material design and development platform. This platform is meticulously crafted to elevate the performance of binder resin, ensuring impeccable compatibility with our sophisticated processes and state-of-the-art equipment.
Plating serves a dual role: offering robust corrosion protection and significantly enhancing the shear strength between the steel wire and bonding resin. Our comprehensive data analysis and comparative tests show that tin bronze exhibits an impressive average shear strength of 20.69MPa, in contrast to brass, which averages 11.42MPa. These findings underscore the marked differences in shear strength attributable to various plating and bonding resins. Therefore, we have meticulously selected tin bronze-plated steel wire as our pressure-bearing substrate, owing to its unparalleled performance.
Key Industrial and Mining Application Cases
Xinjiang Key Project Construction - Process Pipeline for Potassium Salt in Lop Nur, Xinjiang
This prestigious national investment project in Xinjiang Lop Nur emphasizes salt chemical processes with rigorous demands for annual conveying capacity, pipe bending resistance, and interface stability. Shandong Donghong Pipe Industry Co., Ltd.'s expert technical team tailored a specialized, non-standard product structure and interface program to meet these exceptional project specifications. Additionally, Donghong Pipeline Engineering Company meticulously supervised the entire construction process, guaranteeing the pipeline's efficient and seamless operation.
Wet Copper Refining Project in Kazakhstan
This groundbreaking project requires open-air transfer of highly corrosive copper sulfate media. Donghong's innovative high-pressure, corrosion-resistant SRTP, integrated with advanced Composite500 steel-plastic composite technology and the cutting-edge Seal-Seal double-seal connection technology, offers an unmatched solution for the corrosion-resistant transport of these specialized media.
"One Belt, One Road" - Indonesia OBI Nickel and Cobalt Project Deep Sea Landfill Project
Nestled on Obi Island in North Maluku Province, Indonesia, this ambitious project is executed by U.S. Borealis (Beijing) Pipeline Technology Co., Ltd. The deep-sea landfill (DSTP) system was meticulously selected following comprehensive economic investment comparisons and rigorous operation and maintenance safety assessments. Employing DN1000*1.6MPa steel wire mesh skeleton polyethylene composite pipes valued at 66.484 million yuan, this project exemplifies Donghong's unparalleled expertise and cutting-edge 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. Do your products meet international standards?
Our top-tier products have not only met but surpassed worldwide certifications such as CE, BV, ISO, and WARS, setting a benchmark in quality. Provide us with the specific national standard you need, and we will verify or test our products to assure you of full compliance.
2. What services do you offer?
As a comprehensive manufacturing powerhouse, we deliver an extensive range of pipe products, fittings, packaging, and shipping solutions. Our professional consulting services encompass project advice, pipe system solutions, and expert design recommendations. As an engineering-centric entity, we specialize in pipeline contracting, repair services, and offer complimentary maintenance guidance.
3. Do you provide OEM/ODM services?
Absolutely, we specialize in customizing materials, specifications, logos, packaging, connection methods, and beyond. Our seasoned team excels at crafting bespoke solutions tailored to your unique projects, supported by numerous successful case studies.
4. What are your payment terms?
We accept secure transactions through T/T or L/C at sight.
5. How do you ensure the quality of your products?
We invite all customers to visit our facilities and conduct an in-depth inspection of our products. We can also carry out rigorous tests according to your specifications before order placement. Additionally, sample dispatch prior to bulk production is available for your testing and validation.
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