Introducing the Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP) - a revolutionary breakthrough in mining technology. This cutting-edge pipe is fortified with a high-strength steel wire mesh skeleton, meticulously helically twisted and expertly molded. Constructed from specialized, flame-retardant, and antistatic high-density polyethylene (HDPE) and bonded with high-performance adhesive resin, this unique formulation ensures seamless integration of the steel wire skeleton with the HDPE layers. Capturing the finest qualities of both steel and plastic, this pipe is engineered for superior performance in demanding applications such as underground water supply and drainage, slurry spraying, gas extraction, and air pressure systems.
Polyethylene Raw Materials: Our coal mine application pipes utilize inner and outer polyethylene resin crafted from specialized, flame-retardant, and antistatic materials, including cutting-edge carbon nanotube (CNT) modified materials and permanent coloring special materials. These advanced materials, developed with our company's exclusive intellectual property rights, significantly enhance the mechanical properties of the pipes. They ensure compliance with MT181 and MT558.1 standards, consistently surpassing performance expectations.
Enhanced Steel Wire: We utilize copper-plated steel wire that adheres to GB/T14450 standards, offering an impressive strength of 2050MPA, significantly exceeding the standard requirement of 1850MPA. This ensures exceptional durability and high performance.
Adhesive Resin: Our innovative adhesive resin, developed using our proprietary technology, delivers exceptional adhesion to steel wire and outstanding process adaptability. This advanced formulation ensures our pipes maintain 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: Setting the benchmark, we are the first enterprise to develop medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products, complete with an advanced and reliable connection method.
2. Trailblazers in Mining: Leading the way, we are the first to devise steel wire mesh skeleton polyethylene composite pipes tailored specifically for underground coal mines, ensuring unparalleled safety and efficiency.
3. Industry Leaders: We are the first to successfully introduce wire mesh skeleton polyethylene composite pipes into the coal mining sector, establishing a revolutionary industry standard.
4. High-Pressure Pioneers: As true innovators, we are the first to create wire mesh skeleton polyethylene composite pipe products capable of withstanding pressures above 3.5MPa.
5. Cutting-Edge Connection Technology: Breaking new ground, we are the first to develop 'double sealing' and 'one-piece clamp' connection technologies for steel wire mesh skeleton polyethylene composite pipes used in underground coal mines, providing superior reliability.
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
The binder resin is the cornerstone of our Industrial High Density Polyethylene Pipe, ensuring seamless stress transfer during pipe pressure processes. The performance of this critical composite material significantly dictates the product's reliability. At Shandong Donghong Pipe Industry Co., Ltd., we leverage an advanced raw material design and development platform. This allows us to meticulously enhance the binder resin, achieving unparalleled synergy with our sophisticated processes and cutting-edge 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, ensuring superior performance and longevity.
Key Industrial and Mining Application Showcases
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 are committed to forging enduring partnerships with leading logistics companies. We have meticulously developed 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 regardless of weather conditions, remoteness, or environmental challenges. Our meticulously planned transportation strategies 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 proudly hold CE, BV, ISO, and WARS certifications, surpassing all standard requirements. Please inform us of the specific national standards you need; we will gladly verify or test them to ensure compliance.
2. What kind of services do you offer?
As a premier manufacturing factory, we offer a full suite of services, including pipe products, pipe fittings, comprehensive packaging, and reliable shipping. As an expert consulting firm, we provide insightful project consulting, innovative pipe system solutions, and detailed design recommendations. As a leading engineering enterprise, we deliver professional pipeline contracting, expert pipe repair services, and complimentary maintenance guidance.
3. Do you support OEM/ODM services?
Absolutely! We specialize in customizing materials, specifications, logos, packaging, and connection methods. Our seasoned team also provides tailored solution suggestions for your unique projects, backed by successful case studies for your reference.
4. What are your terms of payment?
We accept payment via T/T or L/C at sight.
5. How can you guarantee the quality of your goods?
We warmly invite you to visit our company and inspect our goods in person. We also conduct rigorous pre-order testing as per customer requirements. Samples can be dispatched for customer testing to ensure product qualification before proceeding with bulk production.
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