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. 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
At Shandong Donghong Pipe Industry Co., Ltd., the binder resin is the keystone of our High Density Polyethylene Pipe, ensuring optimal stress transfer during pressure applications. Our specialized raw material design and development platform enables us to meticulously enhance the binder resin, resulting in unmatched performance and seamless integration with our advanced processes and state-of-the-art equipment. This critical composite material's superior performance is a testament to our commitment to quality.
Plating is integral to our product's durability, offering exceptional corrosion resistance while significantly boosting the shear strength between steel wire and bonding resin. Through extensive data testing, we identified that the choice of plating material profoundly affects shear strength. Tin bronze plating demonstrated remarkable superiority with an average shear strength of 20.69MPa, compared to 11.42MPa for brass. Therefore, our Reliable Srcp Tube for Water Transportation employs tin bronze-plated steel wire, ensuring it stands as the optimal 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 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 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 with Abrasion and Chemical Resistance for Industry arrives promptly and in pristine condition.
1. Does your product meet international standards?
Our products have attained CE, BV, ISO, and Wars certifications, all exceeding standard requirements. Inform us of your specific national standard, and we will ensure compliance through thorough verification or testing.
2. What kind of services do you offer?
As a manufacturing factory, we offer a full spectrum of services including pipe products, fittings, packaging, and shipping. Our expertise extends to project consulting, pipe system solutions, and design recommendations. We also provide premium pipeline contractor services, pipe repair, and free maintenance guidance.
3. Do you support OEM/ODM services?
Certainly! We specialize in material, specification, logo, packaging, and connection method customization. Our seasoned team can propose tailored solutions for your projects, backed by successful case studies.
4. What are your terms of payment?
We welcome payments via T/T or L/C at sight.
5. How can you guarantee the quality of your goods?
We invite customers to visit our company for a firsthand inspection of our products. Rigorous testing is performed per customer requirements before order placement. Additionally, we provide samples for customer testing to ensure product quality prior to bulk production.
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