The Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP) is a groundbreaking innovation in mining technology. This advanced composite pipe features a high-strength steel wire mesh skeleton, meticulously helically twisted and molded for unparalleled durability. It is encased in superior flame-retardant and antistatic high-density polyethylene (HDPE), bonded with high-performance adhesive resin. This state-of-the-art design merges the benefits of both steel and plastic, making it ideal for various demanding applications including 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 fields is formulated from flame-retardant and antistatic specially modified materials. These include cutting-edge carbon nanotube (CNT) modifications and permanent coloring materials, all developed with independent intellectual property rights. Compliant with MT181 and MT558.1 standards, these materials ensure enhanced mechanical properties and superior performance.
Enhanced Steel Wire: We employ copper-plated steel wire that adheres to the GB/T14450 standards. With an impressive strength of 2050MPA, it significantly exceeds the standard requirement of 1850MPA, guaranteeing exceptional performance and reliability.
Adhesive Resin: Our patented adhesive resin, developed with exclusive independent intellectual property rights, showcases remarkable 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. As a pioneering enterprise, we have developed medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products, accompanied by our innovative connection methods, setting new standards in the industry.
2. We are the trailblazing company that introduced steel wire mesh skeleton polyethylene composite pipes specifically tailored for the challenging conditions of underground coal mines, ensuring safety and reliability.
3. We are the groundbreaking entity that has not only promoted the use of wire mesh skeleton polyethylene composite pipes in underground coal mines but also transformed the industry with our cutting-edge offerings.
4. As the foremost enterprise, we have developed wire mesh skeleton polyethylene composite pipe products capable of withstanding pressures above 3.5MPa, demonstrating unparalleled durability and strength.
5. Leading the way, 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, setting a new benchmark for safety and efficiency.
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 a wide range of high-pressure engineering fittings with precision and excellence. 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 risen to prominence as a premier manufacturer and service provider in the engineering pipeline sector. We excel as a general contractor for pipeline engineering projects, offering a diverse and specialized range of pipelines: rainwater and sewage drainage pipes, municipal pipelines, industrial and mining pipelines, and pipelines for national key projects. Honored as the first engineering composite pipeline manufacturer to be listed on China's main board, Donghong proudly celebrated its listing on the Shanghai main board on November 6, 2017.
With an elite team of over 200 R&D personnel and an impressive portfolio of more than 100 patents, Donghong harnesses cutting-edge national technological platforms such as the national enterprise technology center, CNAS laboratory, academician expert workstation, and postdoctoral workstation. Our unwavering commitment to innovation propels our research into the digitalization, informatization, and intelligent advancements in pipeline engineering, establishing Donghong as an industry leader.
Donghong spearheads pivotal national and livelihood projects, driving the evolution of the engineering pipeline industry. Our notable contributions include landmark 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 crucial infrastructure endeavors.
Experimental Verification
Key Raw Materials
The binder resin is the cornerstone of our High Strength HDPE Pipe with Heavy-Duty Anti-Corrosive Protection for Water Systems, ensuring seamless stress distribution during high-pressure applications. As one of the vital composite materials, its quality directly influences the overall pipe performance. At Shandong Donghong Pipe Industry Co., Ltd., we have engineered a specialized platform for the design and development of raw materials. This advanced platform is specifically designed to elevate the performance of the binder resin, ensuring it integrates perfectly with our proprietary processes and cutting-edge equipment.
Plating offers dual benefits: it not only protects against corrosion but also significantly boosts the shear strength between the steel wire and bonding resin. Our comprehensive data testing reveals a stark contrast: tin bronze exhibits an impressive average shear strength of 20.69MPa, whereas brass comes in at 11.42MPa. These findings underscore the superior performance of tin bronze plating. Therefore, we have selected tin bronze-plated steel wire as our pressure-bearing substrate, ensuring unmatched performance and reliability.
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 is dedicated to advancing salt chemical processes. It demands exceptional annual conveying capacity, robust pipe bending resistance, and unparalleled interface stability. The technical virtuosos at Donghong Pipe Industry Co., Ltd. have ingeniously fashioned a bespoke, non-standard product structure and interface plan, meticulously tailored to these rigorous project specifications. Furthermore, the expert engineers at Donghong Pipeline Engineering Company meticulously supervised the entire construction phase, ensuring the pipeline's flawless and efficient operation throughout.
Wet Copper Refining Project in Kazakhstan
This demanding 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 the innovative Composite500 steel-plastic composite technology and the advanced Seal-Seal double-seal connection technology, delivers an impeccable solution for the reliable and corrosion-resistant transport of such specialized media.
"One Belt, One Road" - Indonesia OBI Nickel and Cobalt Project Deep Sea Landfill Project
Situated on the picturesque Obi Island in North Maluku Province, Indonesia, this ambitious project is spearheaded by U.S. Borealis (Beijing) Pipeline Technology Co., Ltd. A deep-sea landfill (DSTP) system was selected following comprehensive economic investment comparisons and stringent safety assessments for operation and maintenance. This groundbreaking project utilizes DN1000*1.6MPa steel wire mesh skeleton polyethylene composite pipes, with a substantial investment of 66.484 million yuan, illustrating 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.
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 have surpassed CE, BV, ISO, and WARS certifications, ensuring they exceed standard requirements. If you have specific national standards in mind, please share them with us, and we will verify and test to ensure full compliance.
2. What type of services do you offer?
As a comprehensive manufacturing factory, we offer a wide range of services, including the production of pipe products, fittings, packaging, and shipping. As a professional consulting company, we provide expert project advice, customized pipe system solutions, and design recommendations. Additionally, as an engineering-centric enterprise, we offer extensive pipeline contracting, repair services, and complimentary maintenance guidance.
3. Do you provide OEM/ODM services?
Absolutely, we specialize in OEM/ODM services, offering customization in materials, specifications, logos, packaging, connection methods, and more. Our expert team is equipped to deliver tailored solutions for your unique projects, supported by numerous successful case studies.
4. What are your payment terms?
We accept payments via T/T or L/C at sight.
5. How can you guarantee the quality of your products?
We warmly invite all customers to visit our facility and inspect our products firsthand. Additionally, we can conduct rigorous tests based on your requirements before you place an order. We also offer samples prior to bulk production for your own testing and qualification.
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