Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP for short) stands at the forefront of mining innovations. Featuring a resilient mesh skeleton meticulously crafted from high-strength steel wires and expertly helically twisted, this pipe promises unmatched performance. Enveloped in a specially modified, flame-retardant, and antistatic high-density polyethylene (HDPE), it is seamlessly bonded with high-performance adhesive resin. This pioneering design melds the superior attributes of both steel and plastic, rendering it an ideal solution for diverse applications such as underground water supply and drainage, slurry spraying, gas extraction, and air pressure management.
Polyethylene Raw Materials: In the realm of coal mining, the inner and outer polyethylene resin is crafted from an advanced blend of flame-retardant and antistatic special modified materials. Enhanced with carbon nanotube (CNT) modifications and vibrant permanent coloring special materials, these pipes, protected by our independent intellectual property rights, comply with MT181 and MT558.1 standards, ensuring superior mechanical properties and reliability.
Enhanced Steel Wire: Our copper-plated steel wire, conforming to GB/T14450 standards, boasts a formidable strength of 2050MPA, far exceeding the standard 1850MPA, thereby guaranteeing exceptional durability and performance in the most demanding environments.
Adhesive Resin: This innovative adhesive resin, a patented marvel developed with our proprietary intellectual property, showcases extraordinary adhesion to steel wire and unparalleled process adaptability, heralding 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. is a pioneering enterprise that has developed cutting-edge medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products, along with their innovative and reliable connection methods.
2. As a trailblazing company, we introduced steel wire mesh skeleton polyethylene composite pipes specifically designed to enhance safety and durability in underground coal mines.
3. Our groundbreaking innovations not only promoted the use of wire mesh skeleton polyethylene composite pipes for underground coal mines but also revolutionized the industry with our state-of-the-art solutions.
4. We are the foremost enterprise in developing wire mesh skeleton polyethylene composite pipe products specifically engineered to withstand pressures exceeding 3.5MPa, setting new standards in the industry.
5. Shandong Donghong Pipe Industry Co., Ltd. is the leading company in creating and implementing the advanced 'double sealing' and 'one-piece clamp' connection technology for steel wire mesh skeleton polyethylene composite pipes, ensuring secure and efficient installations 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 creating a comprehensive 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, reliability, and efficiency 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.
Thorough Experimental Verification
Premium Key Raw Materials
The binder resin is an indispensable component of our Srtp HDPE Pipe, facilitating the seamless transfer of stress during the pipe pressure process. It stands as one of the vital composite materials, and its performance is paramount to the product's quality. At Shandong Donghong Pipe Industry Co., Ltd., we have pioneered a specialized raw material design and development platform. This state-of-the-art platform is meticulously designed to amplify the binder resin's performance, ensuring perfect compatibility with our sophisticated processes and cutting-edge equipment.
Plating serves a dual purpose: offering robust corrosion protection and boosting the shear strength between the steel wire and bonding resin. Our rigorous data testing and comparisons show that tin bronze achieves an impressive average shear strength of 20.69MPa, whereas brass averages 11.42MPa, underscoring significant differences in shear strength with varied plating and bonding resins. Hence, we have meticulously selected tin bronze-plated steel wire as our pressure-bearing substrate due to its unparalleled 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 centers on the critical salt chemical processes, demanding exceptional standards for annual conveying capacity, pipe bending resistance, and interface stability. Donghong's elite technical team has expertly crafted a non-standard, customized product structure and interface solution to meet these rigorous project specifications. Furthermore, Donghong Pipeline Engineering Company supervised the entire construction phase, guaranteeing seamless and efficient pipeline operations.
Wet Copper Refining Project in Kazakhstan
For this project, which involves the open-air transportation of highly corrosive copper sulfate media, Donghong has introduced its advanced high-pressure, corrosion-resistant SRTP. This, combined with the innovative Composite500 steel-plastic composite technology and Seal-Seal double-seal connection technology, provides a flawless solution for the safe and efficient transport of these highly 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 led by U.S. Borealis (Beijing) Pipeline Technology Co., Ltd. After comprehensive evaluations of economic investments and safety parameters for operation and maintenance, the deep-sea landfill (DSTP) system was selected. Utilizing DN1000*1.6MPa steel wire mesh skeleton polyethylene composite pipes, valued at an impressive 66.484 million yuan, this project underscores Donghong's unparalleled expertise and pioneering 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 not only met but surpassed the stringent requirements of CE, BV, ISO, and WARS certifications. Should you have any specific national standards in mind, kindly inform us. We are committed to verifying or testing our products to ensure they meet all necessary compliance standards.
2. What kind of service do you offer?
As a distinguished manufacturing powerhouse, we offer a comprehensive range of pipe products, fittings, meticulous packaging, and efficient shipping services. In our role as expert consultants, we provide invaluable project advice, innovative pipe system solutions, and precise design recommendations. Additionally, our engineering expertise enables us to offer top-notch pipeline contracting, repair services, and complimentary maintenance guidance.
3. Do you support OEM/ODM service?
Absolutely! We specialize in offering bespoke customization services across materials, specifications, logos, packaging, and connection methods. Our team of experts is adept at delivering tailor-made solutions for your specific projects, backed by a wealth of successful case studies demonstrating our capabilities.
4. What's your terms of payment?
We offer flexible payment terms, accepting both T/T and L/C at sight.
5. How can you guarantee the goods you offer are qualified?
Our unwavering commitment to quality is showcased by our open invitation to all customers to visit our facilities and see our products firsthand. We also perform rigorous testing as per your specifications before any order is finalized. Furthermore, we can provide samples prior to bulk production, allowing you to conduct your own tests for qualification and peace of mind.
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