The Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP) represents a groundbreaking innovation in mining products. This advanced pipe is reinforced with a high-strength steel wire mesh skeleton, meticulously helically twisted and molded. It is constructed from modified flame-retardant and antistatic high-density polyethylene (HDPE) and bonded with high-performance adhesive resin. This unique combination ensures the steel wire skeleton seamlessly integrates with both the inner and outer layers of HDPE, capturing the best qualities of both steel and plastic pipes. Its robust design makes it ideal for a range of demanding applications including underground water supply and drainage, slurry spraying, gas extraction, and air pressure systems.
Polyethylene Raw Materials: The inner and outer polyethylene resin utilized in our coal mine applications is crafted from flame-retardant and antistatic specialized modified materials, such as carbon nanotube (CNT) modified materials and permanent coloring special materials. These materials, developed with our company's independent intellectual property rights, enhance the mechanical properties of the pipes, ensuring compliance with MT181 and MT558.1 standards while exceeding performance expectations.
Enhanced Steel Wire: We employ copper-plated steel wire that adheres to GB/T14450 standards, boasting a remarkable strength of 2050MPA. This far surpasses the standard requirement of 1850MPA, ensuring superior durability and performance.
Adhesive Resin: Our patented adhesive resin, developed with our proprietary technology, offers exceptional adhesion to steel wire and outstanding process adaptability. This innovation ensures our pipes are both reliable and robust in various 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: The first enterprise to develop medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products with an advanced, reliable connection method.
2. Trailblazers in Mining: The first enterprise to devise steel wire mesh skeleton polyethylene composite pipes specifically for underground coal mines.
3. Industry Leaders: The first enterprise to successfully introduce wire mesh skeleton polyethylene composite pipes into the coal mining sector, setting a new industry standard.
4. High-Pressure Pioneers: The first enterprise to create wire mesh skeleton polyethylene composite pipe products capable of handling pressures above 3.5MPa.
5. Cutting-Edge Connection Technology: The first enterprise to innovate 'double sealing' and 'one-piece clamp' connection technologies for steel wire mesh skeleton polyethylene composite pipes used in underground coal mines.
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. 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. Representing the pinnacle of industry expertise and innovation, Donghong achieved a significant 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 is at the forefront of advancing the digitalization, informatization, and intelligence of pipeline engineering, spearheading progress in the engineering pipeline industry.
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 innovation, Donghong is dedicated to advancing infrastructure and enhancing quality of life through its engineering expertise.
Experimental Verification
Key Raw Materials
Binder resin stands as the cornerstone of our product, ensuring seamless stress transfer during the pipe pressure process. This critical composite material's performance significantly dictates our product's quality. At Shandong Donghong Pipe Industry Co., Ltd., we leverage a specialized raw material design and development platform. This allows us to meticulously enhance the binder resin, achieving unparalleled synergy with our processes and equipment.
Plating serves a dual purpose: it provides robust corrosion protection and significantly enhances the shear strength between steel wire and bonding resin. Extensive data testing revealed notable differences in shear strength based on the plating material used. Tin bronze achieves an impressive average shear strength of 20.69MPa, compared to 11.42MPa for brass. Consequently, we've selected tin bronze-plated steel wire as the optimal pressure-bearing substrate for our Reliable Srcp Tube for Water Transportation.
Key Industrial and Mining Application Cases
Xinjiang Key Project Construction-Process Pipeline for Potassium Salt in Lop Nur, Xinjiang
This prestigious project represents a significant national investment in the salt chemical sector, specifically within the Xinjiang Lop Nur process pipeline. The pipeline's annual conveying capacity, exceptional pipe bending resistance, and stringent interface stability requirements demanded a tailored solution from Donghong's expert technical team. They meticulously designed and developed a customized non-standard product structure and interface program to meet the unique characteristics of the project. Donghong Pipeline Engineering Company took charge of the entire construction process, ensuring the pipeline functions with optimum efficiency.
Wet Copper Refining Project in Kazakhstan
Faced with the challenge of open-air transportation of highly corrosive copper sulfate media, Donghong employed its advanced high pressure corrosion-resistant SRTP, Composite500 steel-plastic composite technology, and double-seal connection technology. This sophisticated approach provided a flawless solution for the corrosion-resistant transport of special media, meeting the project's demanding requirements.
"One Belt, One Road"-Indonesia OBI Nickel and Cobalt Project Deep Sea Landfill Project
Situated on Obi Island in North Maluku Province, Indonesia, this ambitious project is managed by the U.S. Borealis (Beijing) Pipeline Technology Co., Ltd. They undertook the intricate design task for the deep-sea landfill (DSTP) system. After thorough economic investment comparisons and safety assessments, the dn1000 * 1.6MPa steel wire mesh skeleton polyethylene composite pipe was chosen for its superior performance and reliability. Donghong's expertise contributed significantly, with the project's total investment amounting to 66.484 million yuan, underscoring our commitment to excellence.
At Shandong Donghong Pipe Industry Co., Ltd., we take immense pride in 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 the pinnacle of transportation solutions.
With our extensive expertise and years of transportation experience, we guarantee seamless delivery regardless of weather conditions, remoteness, or environmental challenges. Our comprehensive transportation plans ensure each shipment of our Reliable Srcp Tube for Water Transportation reaches its destination promptly and in pristine condition.
1. Does your product meet international standards?
Our products have passed CE, BV, ISO, and Wars certifications, with all metrics exceeding standard requirements. Feel free to inform us of the specific national standard you need, and we will verify or test it accordingly.
2. What kind of services do you offer?
As a manufacturing factory, we provide a comprehensive range of services including pipe products, pipe fittings, packaging, and shipping. As a professional consulting company, we offer project consulting advice, pipe system solutions, and design recommendations. As an engineering-focused enterprise, we provide pipeline contractor services, pipe repair services, and free maintenance guidance.
3. Do you support OEM/ODM services?
Yes, we offer customization in materials, specifications, logos, packaging, and connection methods, among others. Our expert team can also provide solution suggestions for your specific projects, with successful case studies to reference.
4. What are your terms of payment?
We accept T/T or L/C at sight.
5. How can you guarantee the quality of your goods?
We warmly welcome customers to visit our company and inspect our goods firsthand. We also offer rigorous testing as per customer requirements before orders are placed. Additionally, we can dispatch samples for customer testing to ensure product qualification before bulk production.
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