The Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP) signifies a revolutionary advancement in mining products. This pioneering pipe is fortified with a high-strength steel wire mesh skeleton, expertly helically twisted and molded. Crafted from specially modified flame-retardant and antistatic high-density polyethylene (HDPE) and bonded with high-performance adhesive resin, this pipe showcases a unique synergy between the steel wire skeleton and both the inner and outer HDPE layers. By merging the best attributes of both steel and plastic pipes, this resilient design is perfectly suited for demanding applications such as underground water supply, drainage, slurry spraying, gas extraction, and air pressure systems.
Polyethylene Raw Materials: The inner and outer polyethylene resin employed in our coal mine applications is manufactured from flame-retardant and antistatic specialized modified materials, including carbon nanotube (CNT) modified substances and permanent coloring materials. Developed with our company's proprietary technology, these advanced materials enhance the mechanical properties of the pipes, ensuring they not only meet but surpass MT181 and MT558.1 standards, exceeding performance expectations.
Enhanced Steel Wire: Our pipes utilize copper-plated steel wire that conforms to GB/T14450 standards, featuring an impressive tensile strength of 2050MPA. This significantly outperforms the standard requirement of 1850MPA, guaranteeing superior durability and exceptional performance.
Adhesive Resin: Our innovative adhesive resin, developed with exclusive proprietary technology, offers unparalleled adhesion to steel wire and remarkable process adaptability. This ensures our pipes exhibit outstanding reliability and robustness, even in the most challenging environments.
| 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 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
1. Pioneering Innovation: Shandong Donghong Pipe Industry Co., Ltd. proudly stands as the first enterprise to develop medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products. These pipes boast an advanced and reliable connection method that sets us apart, ensuring remarkable efficiency and durability.
2. Trailblazers in Mining: Leading the industry, we are the first enterprise to engineer specialized steel wire mesh skeleton polyethylene composite pipes designed specifically for underground coal mines. Our solutions ensure unparalleled durability and safety, setting the standard in mining operations.
3. Industry Leaders: Setting a new benchmark, we are the pioneers in successfully integrating wire mesh skeleton polyethylene composite pipes into the coal mining sector. Our innovative approach revolutionizes industry standards and significantly enhances operational efficiency.
4. High-Pressure Pioneers: At the forefront of innovation, Shandong Donghong Pipe Industry Co., Ltd. is the trailblazer in creating wire mesh skeleton polyethylene composite pipe products that withstand pressures exceeding 3.5MPa. Our products ensure superior performance and unmatched reliability.
5. Cutting-Edge Connection Technology: We are the first enterprise to introduce 'double sealing' and 'one-piece clamp' connection technologies for steel wire mesh skeleton polyethylene composite pipes utilized in underground coal mines. Our advancements guarantee secure, efficient, and long-lasting connections.
Shandong Donghong Pipe Industry Co., Ltd. proudly operates a state-of-the-art high-pressure pipe fittings factory. We specialize in producing a comprehensive range of high-pressure engineering fittings. Furthermore, we excel in customization, crafting unique fittings tailored to your specific requirements and operating conditions. Our unwavering dedication to achieving a seamlessly connected system ensures that we deliver unparalleled quality and precision in every product.
About
us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856) is headquartered in the historic and culturally rich hometown of Confucius - Qufu, China. Established in 1997, Donghong has carved a niche as a premier manufacturer of engineering pipelines, a proficient service provider in pipeline engineering, and a general contractor for comprehensive pipeline projects. Our product portfolio is diversified into four major categories: rainwater and sewage drainage pipes, municipal pipelines, industrial and mining pipelines, and pipelines for national key projects. Symbolizing the pinnacle of industry expertise and innovation, Donghong achieved a landmark milestone on November 6, 2017, by being listed on the Shanghai Main Board, marking itself as China's first main board-listed engineering composite pipeline manufacturer.
Donghong takes pride in its robust R&D capabilities, with a team of over 200 dedicated research and development professionals and a portfolio of more than 100 patents. Leveraging national platforms such as the National Enterprise Technology Center, the National CNAS Laboratory, the Academician Expert Workstation, and the Postdoctoral Workstation, Donghong stands at the forefront of advancing the digitalization, informatization, and intelligence of pipeline engineering, leading the industry in innovation and technological progress.
Committed to contributing to national key strategic and livelihood projects, Donghong plays a pivotal role in the engineering pipeline industry. Our services extend to major national initiatives like the South-to-North Water Diversion, Hanjinwei, Beijing-Xinjiang Expressway, One Belt, One Road projects, standardized farmland development, urban and rural water supply integration, Liren gas, and centralized heating systems. By driving excellence and pioneering innovation, Donghong is dedicated to advancing infrastructure and enhancing quality of life through its engineering expertise.
Experimental Verification
Key Raw Materials
At Shandong Donghong Pipe Industry Co., Ltd., our High Density Polyethylene Pipe stands unparalleled, thanks to the advanced binder resin at its core. This vital component ensures superior stress transfer during pressure applications. Our dedicated raw material R&D platform meticulously refines the binder resin to deliver unmatched performance. Seamlessly integrated with our cutting-edge processes and state-of-the-art equipment, this crucial composite material epitomizes our unwavering commitment to quality excellence.
Our product's durability is enhanced by superior plating, which provides exceptional corrosion resistance and significantly increases the shear strength between steel wire and bonding resin. Extensive data testing revealed that the choice of plating material is crucial for optimal shear strength. Tin bronze plating offers remarkable advantages, showing an average shear strength of 20.69MPa compared to 11.42MPa for brass. Consequently, our High Density Polyethylene Pipe for Desalination Processes and Groundwater Remediation Engineering Support utilizes tin bronze-plated steel wire, making it the premier choice for pressure-bearing applications.
Key Industrial and Mining Application Cases
Xinjiang Key Project Construction - Process Pipeline for Potassium Salt in Lop Nur, Xinjiang
This prestigious project represents a monumental national investment in the salt chemical sector, specifically within the Xinjiang Lop Nur process pipeline. The pipeline's substantial annual conveying capacity, exceptional resistance to pipe bending, and stringent interface stability standards necessitated a bespoke solution from Donghong's seasoned technical team. They meticulously engineered and developed a customized non-standard product structure and interface system to accommodate the unique demands of the project. Donghong Pipeline Engineering Company expertly managed the entire construction process, ensuring the pipeline operates at peak efficiency.
Wet Copper Refining Project in Kazakhstan
Confronted with the challenge of open-air transportation of highly corrosive copper sulfate media, Donghong deployed its cutting-edge high-pressure corrosion-resistant SRTP, Composite500 steel-plastic composite technology, and innovative double-seal connection technology. This sophisticated strategy provided an impeccable solution for the corrosion-resistant transport of special media, fully meeting the project's stringent requirements.
"One Belt, One Road" - Indonesia OBI Nickel and Cobalt Project Deep Sea Landfill Project
Located on Obi Island in North Maluku Province, Indonesia, this pioneering project is managed by the U.S. Boreali (Beijing) Pipeline Technology Co., Ltd., which undertook the intricate design of the deep-sea landfill (DSTP) system. After comprehensive economic investment comparisons and safety evaluations, the dn1000 * 1.6MPa steel wire mesh skeleton polyethylene composite pipe was selected for its superior performance and reliability. Donghong's expertise was instrumental in this venture, with the project amassing a total investment of 66.484 million yuan, demonstrating our unwavering commitment to excellence.
At Shandong Donghong Pipe Industry Co., Ltd., we pride ourselves on our enduring partnerships with top-tier logistics companies. We have meticulously crafted a sophisticated transportation model that integrates 'steam transportation + railroad transportation + port and shipping logistics,' ensuring our customers receive unparalleled transportation solutions.
Leveraging our extensive expertise and years of transportation experience, we guarantee seamless delivery irrespective of weather conditions, remoteness, or environmental challenges. Our comprehensive transportation plans ensure each shipment of our High Density Polyethylene Pipe for Desalination Processes and Groundwater Remediation Engineering Support arrives promptly and in pristine condition.
1. Does your product meet international standards?
Our products have proudly achieved CE, BV, ISO, and Wars certifications, all surpassing standard requirements. Share your specific national standards with us, and we will ensure full compliance through meticulous verification or thorough testing.
2. What kind of services do you offer?
As a dedicated manufacturing factory, we offer a comprehensive range of services, including pipe products, fittings, packaging, and shipping. Our expertise also encompasses project consulting, complete pipe system solutions, and design recommendations. We are committed to providing top-tier pipeline contractor services, efficient pipe repair, and complimentary maintenance guidance.
3. Do you support OEM/ODM services?
Absolutely! We excel in customizing materials, specifications, logos, packaging, and connection methods. Our experienced team is prepared to deliver tailored solutions for your projects, supported by a wealth of successful case studies.
4. What are your terms of payment?
We readily accept payments via T/T or L/C at sight.
5. How can you guarantee the quality of your goods?
We encourage customers to visit our facilities for an in-depth inspection of our products. Rigorous testing is conducted according to customer requirements prior to order placement. Additionally, we offer samples for customer testing to ensure product quality before proceeding with bulk production.
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