Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP) is a groundbreaking innovation in mining products. Featuring a high-strength steel wire mesh skeleton, meticulously helically twisted and molded to ensure exceptional durability. Encased in specially modified flame-retardant and antistatic high-density polyethylene (HDPE), this composite pipe is seamlessly bonded with high-performance adhesive resin. This state-of-the-art design amalgamates the superior qualities of both steel and plastic materials, making it the ultimate solution for diverse applications such as underground water supply and drainage, slurry spraying, gas extraction, and air pressure management.
Polyethylene Raw Materials: The inner and outer polyethylene resins used in coal mining operations are formulated from specially modified flame-retardant and antistatic materials. Enhanced with carbon nanotube (CNT) modifications and permanent coloring agents, these materials are developed under our proprietary technologies. Fully compliant with MT181 and MT558.1 standards, these pipes deliver unparalleled mechanical performance.
Enhanced Steel Wire: Our copper-plated steel wire, in accordance with GB/T14450 standards, boasts a tensile strength of 2050MPA, significantly exceeding the standard requirement of 1850MPA, ensuring superior and reliable performance.
Adhesive Resin: Our proprietary adhesive resin, developed using our exclusive intellectual property, showcases exceptional adhesion to steel wire and outstanding process adaptability, establishing 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. As the pioneering enterprise, we have developed medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products, complemented by our innovative connection methods.
2. We are the trailblazing company that introduced steel wire mesh skeleton polyethylene composite pipes, meticulously designed for underground coal mines.
3. Our company is the groundbreaking entity that has not only promoted wire mesh skeleton polyethylene composite pipes for underground coal mines but also revolutionized the industry with our cutting-edge offerings.
4. We stand as the foremost enterprise in developing wire mesh skeleton polyethylene composite pipe products, engineered to withstand pressures exceeding 3.5MPa.
5. As the leading company, we created and implemented the advanced '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 revered hometown of Confucius. Established in 1997, Donghong has emerged as a distinguished leader in the engineering pipeline sector. We excel as a comprehensive general contractor for pipeline engineering projects, delivering four major categories of functional and tailor-made pipelines: rainwater and sewage drainage pipes, municipal pipelines, industrial and mining pipelines, and pipelines integral to national key projects. Celebrated as the first engineering composite pipeline manufacturer to be listed on China's main board, Donghong proudly debuted on the Shanghai main board on November 6, 2017.
Empowered by a dynamic team of over 200 R&D experts and an impressive collection of over 100 patents, Donghong harnesses national technological platforms including the national enterprise technology center, CNAS laboratory, academician expert workstation, and postdoctoral workstation. Our unwavering commitment to innovation propels our research in the digitalization, informatization, and intelligence of pipeline engineering, solidifying Donghong's position as an industry pioneer.
Donghong stands at the vanguard of national and essential livelihood projects, spearheading advancements in the engineering pipeline industry. Our significant contributions encompass 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 critical infrastructure ventures.
Experimental Verification
Key Raw Materials
The binder resin in our Srtp HDPE Pipe is a pivotal element, ensuring seamless stress transfer during pipe pressure cycles. As one of the essential composite materials, its quality profoundly influences the overall product 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 optimize the binder resin's attributes, ensuring flawless compatibility with our advanced processes and state-of-the-art equipment.
Plating fulfills a dual role: it provides essential corrosion protection and significantly enhances the shear strength between the steel wire and bonding resin. Our comprehensive data testing and comparative analysis indicate a tin bronze shear strength average of 20.69MPa, compared to 11.42MPa for brass, showcasing notable variances in performance. Given its superior attributes, we have selected tin bronze-plated steel wire as our preferred pressure-bearing substrate.
Key Industrial and Mining Application Cases
Xinjiang Key Project Construction - Process Pipeline for Potassium Salt in Lop Nur, Xinjiang
This national key investment initiative in Xinjiang Lop Nur centers on salt chemical processes, demanding superior annual conveying capacity, pipe bending resistance, and interface stability. Donghong's expert technical team meticulously designed a non-standard, customized product structure and interface system, perfectly aligned with the project's stringent specifications. Furthermore, Donghong Pipeline Engineering Company supervised the entire construction process, guaranteeing the pipeline's seamless and efficient operation.
Wet Copper Refining Project in Kazakhstan
This project requires open-air transport of highly corrosive copper sulfate media. Donghong's high-pressure, corrosion-resistant SRTP technology, combined with Composite500 steel-plastic composite technology and the innovative Seal-Seal double-seal connection technology, provides an unparalleled solution for the corrosion-resistant conveyance 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 project is managed by U.S. Borealis (Beijing) Pipeline Technology Co., Ltd. The deep-sea landfill (DSTP) system was meticulously chosen after comprehensive economic investment comparisons and safety assessments for operation and maintenance. The project utilizes DN1000*1.6MPa steel wire mesh skeleton polyethylene composite pipes, valued at 66.484 million yuan, underscoring 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. Does your product meet international standards?
Our products not only meet but exceed international certifications including CE, BV, ISO, and WARS. Simply inform us of the specific national standard you require, and we will verify or conduct testing to ensure full compliance.
2. What kind of services do you offer?
As a comprehensive manufacturing factory, we offer a complete range of pipe products, fittings, packaging, and shipping services. Our professional consulting team provides expert project advice, tailored pipe system solutions, and design recommendations. As an engineering-focused enterprise, we also offer pipeline contracting, repair services, and complimentary maintenance guidance.
3. Do you support OEM/ODM services?
Absolutely, we offer a range of customization options in materials, specifications, logos, packaging, connection methods, and more. Our expert team excels in delivering bespoke solutions for your unique projects, supported by numerous successful case studies demonstrating our capabilities.
4. What are your terms of payment?
We accept payments via T/T or L/C at sight.
5. How can you guarantee the quality of your products?
We warmly welcome you to visit our company and inspect our products firsthand. Additionally, we can conduct rigorous tests as per your specific requirements before you place an order. We can also provide samples prior to bulk production for you to perform your own testing and verification.
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