Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP for short) is a groundbreaking innovation in mining products. Featuring a high-strength steel wire mesh skeleton, meticulously helically twisted and molded, this composite pipe promises unparalleled performance. Encased in specially modified flame-retardant and antistatic high-density polyethylene (HDPE), it is securely bonded using high-performance adhesive resin. This ingenious combination harnesses the strengths of both steel and plastic pipes, making it the premier choice for various 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 used in coal mining applications is specially crafted from flame-retardant and antistatic modified materials. These advanced materials, which include carbon nanotube (CNT) modifications and permanent coloring agents, have been developed with proprietary intellectual property rights. Meeting stringent MT181 and MT558.1 standards, these pipes deliver superior mechanical properties for demanding environments.
Enhanced Steel Wire: Our pipes incorporate copper-plated steel wire that adheres to the rigorous GB/T14450 standards. With an impressive strength of 2050MPA, it far exceeds the standard requirement of 1850MPA, ensuring exceptional robustness and reliability.
Adhesive Resin: Our patented adhesive resin, developed with proprietary intellectual property rights, excels in providing superior steel wire adhesion and exceptional 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. Shandong Donghong Pipe Industry Co., Ltd. stands as the pioneering enterprise, trailblazing the development of medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products. Their innovative connection methods have set a new standard in the industry.
2. As a trailblazer, our company introduced steel wire mesh skeleton polyethylene composite pipes specifically designed for the rigorous demands of underground coal mines, ensuring superior performance and safety.
3. We are the groundbreaking entity that not only promoted wire mesh skeleton polyethylene composite pipes for underground coal mines but also revolutionized the industry with our cutting-edge solutions, driving advancements and setting benchmarks.
4. As the foremost enterprise, we have excelled in developing wire mesh skeleton polyethylene composite pipe products capable of withstanding pressures exceeding 3.5MPa, showcasing unmatched durability and reliability.
5. Leading the way, Shandong Donghong Pipe Industry Co., Ltd. created and implemented the innovative 'double sealing' and 'one-piece clamp' connection technology. This groundbreaking advancement ensures the highest standards of safety and efficiency 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. We are dedicated to producing a diverse range of high-pressure engineering fittings, ensuring durability and excellence for every application. Additionally, we offer bespoke customization services, meticulously tailoring special fittings to meet unique customer requirements and specific industrial and mining conditions. Our manufacturing philosophy revolves around the principle of 'good connection to achieve a good system,' guaranteeing 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 vital element in our Srtp HDPE Pipe, ensuring the seamless distribution of stress during pipe pressure operations. As one of the primary composite materials, its quality profoundly influences the product's overall performance. At Shandong Donghong Pipe Industry Co., Ltd., we have pioneered a specialized raw material design and development platform. This platform is meticulously crafted to augment the binder resin's performance, guaranteeing its perfect harmony with our manufacturing processes and equipment.
Plating is essential for two reasons: it provides robust corrosion protection and enhances the shear strength between the steel wire and the bonding resin. Our rigorous data testing and comparisons show that tin bronze achieves an impressive average shear strength of 20.69MPa, whereas brass reaches only 11.42MPa, underscoring the notable differences in shear strength with various plating and bonding resins. Therefore, we have opted for tin bronze-plated steel wire as our pressure-bearing substrate, owing to its exceptional 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 is at the forefront of salt chemical processes, demanding exceptional annual conveying capacity, superior pipe bending resistance, and exceptional interface stability. Donghong's expert technical team has ingeniously engineered a non-standard, customized product structure and interface program specifically tailored to meet these high standards. Additionally, Donghong Pipeline Engineering Company meticulously managed the entire construction process, ensuring the pipeline's optimal efficiency and performance.
Wet Copper Refining Project in Kazakhstan
This ambitious project requires the open-air transportation of highly corrosive copper sulfate media. Donghong's state-of-the-art high-pressure, corrosion-resistant SRTP, enhanced by Composite500 steel-plastic composite technology and Seal-Seal double-seal connection technology, provides an unparalleled solution for the corrosion-resistant transportation of these specialized media.
"One Belt, One Road" - Indonesia OBI Nickel and Cobalt Project Deep Sea Landfill Project
Situated on Obi Island in North Maluku Province, Indonesia, this groundbreaking project is undertaken by U.S. Boreal (Beijing) Pipeline Technology Co., Ltd. Following comprehensive economic investment comparisons and thorough safety assessments for operation and maintenance, 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 unparalleled expertise and innovative prowess.
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, ensuring that your products reach their destination with unparalleled efficiency and security.
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. Our expertise allows us to navigate the most difficult conditions, ensuring your products are delivered on time, every time.
1. Is your product meets the international standard?
Our products not only meet but have surpassed CE, BV, ISO, and WARS certifications, setting a high benchmark in the industry. Let us know the specific national standard you require, and we will verify or test it to ensure compliance, delivering peace of mind and exceptional quality.
2. What kind of service do you offer?
As a leading manufacturing factory, we offer a comprehensive suite of services including pipe products, fittings, packaging, and shipping. As an expert consulting company, we provide insightful project advice, innovative pipe system solutions, and precise design recommendations. Additionally, our engineering prowess allows us to deliver pipeline contracting, robust repair services, and complimentary maintenance guidance.
3. Do you support OEM/ODM service?
Absolutely, we offer extensive customization options in materials, specifications, logos, packaging, and connection methods. Our seasoned team is equipped to deliver bespoke solutions tailored to your projects, backed by a rich portfolio of successful case studies showcasing our expertise.
4. What's your terms of payment?
We accept convenient payment options including T/T or L/C at sight.
5. How can you guarantee the goods you offer are qualified?
We warmly invite all customers to visit our company and see our products for themselves. We can conduct rigorous tests as per your needs before you place an order. Additionally, we offer samples prior to bulk production, allowing you to perform your own quality checks and ensure our goods meet your high standards.
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