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.
2. Trailblazers in Mining: We lead the industry as the first enterprise to devise specialized steel wire mesh skeleton polyethylene composite pipes tailored for use in underground coal mines, ensuring unmatched durability and safety.
3. Industry Leaders: Setting a new benchmark, we are the first to successfully introduce wire mesh skeleton polyethylene composite pipes into the coal mining sector, revolutionizing industry standards and enhancing operational efficiency.
4. High-Pressure Pioneers: Shandong Donghong Pipe Industry Co., Ltd. is at the forefront of innovation, being the first to create wire mesh skeleton polyethylene composite pipe products capable of withstanding pressures above 3.5MPa, ensuring superior performance and reliability.
5. Cutting-Edge Connection Technology: We are the first enterprise to pioneer 'double sealing' and 'one-piece clamp' connection technologies for steel wire mesh skeleton polyethylene composite pipes used in underground coal mines, guaranteeing secure and efficient connections.
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. Moreover, we excel in customization, tailoring unique fittings to meet your specific requirements and operating conditions. Our dedication to the principle of 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. Since our establishment in 1997, Donghong has become synonymous with excellence in the manufacturing of engineering pipelines, providing proficient services in pipeline engineering, and acting as a general contractor for expansive pipeline projects. Our diverse product portfolio encompasses four major categories: rainwater and sewage drainage pipes, municipal pipelines, industrial and mining pipelines, and pipelines for national key projects. Standing as a beacon of industry expertise and innovation, Donghong reached a remarkable milestone on November 6, 2017, by being listed on the Shanghai Main Board, making us China's first main board-listed engineering composite pipeline manufacturer.
Donghong prides itself on exceptional R&D capabilities, boasting a team of over 200 dedicated research and development professionals and holding an impressive portfolio of more than 100 patents. Utilizing prestigious national platforms such as the National Enterprise Technology Center, the National CNAS Laboratory, the Academician Expert Workstation, and the Postdoctoral Workstation, Donghong is leading the way in advancing the digitalization, informatization, and intelligence of pipeline engineering, positioning itself at the forefront of the industry's technological progress.
Dedicated to contributing to national key strategic and livelihood projects, Donghong holds a pivotal role in the engineering pipeline industry. Our extensive services encompass 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. Through our relentless pursuit of excellence and innovation, Donghong is committed to advancing infrastructure and enhancing the quality of life through our engineering prowess.
Experimental Verification
Key Raw Materials
At Shandong Donghong Pipe Industry Co., Ltd., the binder resin is the cornerstone of our High Density Polyethylene Pipe, ensuring unparalleled stress transfer capabilities during high-pressure applications. With our specialized raw material design and development platform, we meticulously enhance the binder resin to achieve superior performance. This ensures seamless integration with our advanced processes and state-of-the-art equipment. The exceptional quality of this essential composite material underscores our unwavering commitment to excellence.
Plating is crucial for our product's durability, providing outstanding corrosion resistance and significantly amplifying the shear strength between steel wire and bonding resin. Extensive data testing revealed that the choice of plating material profoundly impacts shear strength. Tin bronze plating emerged as a superior option, demonstrating an average shear strength of 20.69MPa, compared to 11.42MPa for brass. Thus, our Reliable Srcp Tube for Water Transportation utilizes tin bronze-plated steel wire, ensuring it stands as the ideal substrate 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 targeting the Xinjiang Lop Nur process pipeline. The pipeline's immense annual conveying capacity, remarkable pipe bending resistance, and stringent interface stability requirements called for a bespoke solution from Donghong's expert technical team. They meticulously designed and developed a customized non-standard product structure and interface program to perfectly align with the project's unique demands. Donghong Pipeline Engineering Company oversaw the complete construction process, ensuring the pipeline operates at peak efficiency.
Wet Copper Refining Project in Kazakhstan
Confronted with the challenge of open-air transport of highly corrosive copper sulfate media, Donghong employed its cutting-edge high-pressure corrosion-resistant SRTP, Composite500 steel-plastic composite technology, and robust double-seal connection technology. This sophisticated solution provided unmatched performance for the corrosion-resistant transport of special media, fully meeting the project's rigorous demands.
"One Belt, One Road" - Indonesia OBI Nickel and Cobalt Project Deep Sea Landfill Project
Located on Obi Island in North Maluku Province, Indonesia, this ambitious endeavor is managed by the esteemed U.S. Borealis (Beijing) Pipeline Technology Co., Ltd. They undertook the intricate design task for the deep-sea landfill (DSTP) system. Following thorough economic investment comparisons and stringent safety assessments, the dn1000 * 1.6MPa steel wire mesh skeleton polyethylene composite pipe was selected for its superior performance and reliability. Donghong's technical expertise played a pivotal role, with the project's total investment amounting to 66.484 million yuan, underscoring 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 Strength Polyethylene Composite Pipe for Industrial and Mining Applications in Desalination arrives promptly and in pristine condition.
1. Does your product meet international standards?
Our products proudly carry CE, BV, ISO, and Wars certifications, all surpassing standard requirements. Share your specific national standard with us, and we will ensure precise compliance through meticulous verification or testing.
2. What kind of services do you offer?
As a premier manufacturing factory, we provide a comprehensive range of services including pipe products, fittings, packaging, and shipping. Our expertise spans project consulting, complete pipe system solutions, and design recommendations. Additionally, we offer premium pipeline contractor services, expert pipe repair, and complimentary maintenance guidance.
3. Do you support OEM/ODM services?
Absolutely! We excel in customizing material, specifications, logos, packaging, and connection methods. Our experienced team can present bespoke solutions tailored to your projects, supported by a rich portfolio of successful case studies.
4. What are your terms of payment?
We accept payments via T/T or L/C at sight, ensuring flexibility and convenience for our clients.
5. How can you guarantee the quality of your goods?
We encourage customers to visit our facility for an in-depth inspection of our products. Rigorous testing is conducted according to customer specifications before order placement. Furthermore, we provide samples for customer testing to guarantee product quality before mass production.
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