The Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP) stands as a testament to pioneering innovation in mining solutions. This state-of-the-art pipe features a high-strength steel wire mesh skeleton, intricately helically twisted and molded to perfection. Crafted from specially modified flame-retardant and antistatic high-density polyethylene (HDPE) and bonded with a high-performance adhesive resin, it brings together the unparalleled strength of steel with the versatility of plastic. This seamless integration ensures the steel wire skeleton is harmoniously melded with both the inner and outer layers of HDPE, resulting in a product that captures the superior qualities of both materials. Designed for rigorous applications, it excels in underground water supply and drainage, slurry spraying, gas extraction, and air pressure systems, making it the ultimate choice for demanding industrial environments.
Superior Polyethylene Raw Materials The inner and outer polyethylene resin used in our coal mine applications is engineered from specialized flame-retardant and antistatic modified materials, including advanced carbon nanotube (CNT) modified compounds and permanent coloring materials. These materials, exclusively developed with our company's independent intellectual property, significantly enhance the pipes' mechanical properties. Not only do they meet but they also exceed the stringent MT181 and MT558.1 standards, delivering performance that surpasses industry expectations.
Enhanced and Durable Steel Wire Our pipes feature copper-plated steel wire that conforms to the rigorous GB/T14450 standards, offering an impressive strength of 2050MPA. This exceptional strength far exceeds the standard requirement of 1850MPA, ensuring unmatched durability and top-tier performance.
Revolutionary Adhesive Resin Developed through our proprietary technology, our patented adhesive resin delivers outstanding adhesion to steel wire and exceptional process adaptability. This innovation ensures that our pipes are not only reliable but also robust, capable of performing in a variety of 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: As trailblazers in the industry, Shandong Donghong Pipe Industry Co., Ltd. is renowned for being the first to develop medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products. Our advanced and reliable connection methods set us apart.
2. Trailblazers in Mining: Leading the way in mining, we are proud to be the first to devise steel wire mesh skeleton polyethylene composite pipes uniquely designed for the rigorous demands of underground coal mines.
3. Industry Leaders: Setting new benchmarks, we are the first to successfully introduce wire mesh skeleton polyethylene composite pipes into the coal mining sector, redefining industry standards and paving the way for future advancements.
4. High-Pressure Pioneers: We stand at the forefront of innovation, being the first to create wire mesh skeleton polyethylene composite pipe products that excel in handling pressures above 3.5MPa, showcasing our commitment to high-performance solutions.
5. Cutting-Edge Connection Technology: Our expertise in connection technology is unmatched. We are the first to innovate 'double sealing' and 'one-piece clamp' connection methods specifically designed for steel wire mesh skeleton polyethylene composite pipes used in the challenging environments of underground coal mines.
Shandong Donghong Pipe Industry Co., Ltd. proudly operates with cutting-edge technology in our high-pressure pipe fittings factory. We specialize in crafting a comprehensive array of top-tier high-pressure engineering fittings. Furthermore, we excel in customization, meticulously tailoring unique fittings to precisely meet your specific requirements and operating conditions. Our steadfast commitment to the principle of achieving an impeccably connected system ensures that we deliver unmatched quality and precision in every product, providing you with seamless reliability and exceptional performance.
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 signifies a pivotal national investment in the salt chemical sector, particularly within the Xinjiang Lop Nur process pipeline. The pipeline's impressive annual conveying capacity, outstanding pipe bending resistance, and rigorous interface stability requirements necessitated a bespoke solution from Donghong's elite technical team. They meticulously engineered a tailored non-standard product structure and interface program to cater to the project's distinct needs. Donghong Pipeline Engineering Company managed the entire construction process, ensuring optimal pipeline functionality and efficiency.
Wet Copper Refining Project in Kazakhstan
Confronted with the challenge of open-air transportation of highly corrosive copper sulfate media, Donghong leveraged its cutting-edge high-pressure corrosion-resistant SRTP, Composite500 steel-plastic composite technology, and double-seal connection technology. This sophisticated methodology delivered a flawless solution for the corrosion-resistant transport of special media, precisely meeting the project's stringent 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 project is overseen by the U.S. Borealis (Beijing) Pipeline Technology Co., Ltd. They embarked on the intricate design task for the deep-sea landfill (DSTP) system. Following comprehensive 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 unparalleled expertise played a critical role, with the project's total investment reaching 66.484 million yuan, illustrating our unwavering 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.' This ensures our customers receive the pinnacle of transportation solutions, seamlessly blending efficiency and reliability.
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, offering unmatched dependability and care.
1. Does your product meet international standards?
Our products have proudly achieved CE, BV, ISO, and Wars certifications, with all metrics surpassing standard requirements. Should you have a specific national standard in mind, simply inform us and we will ensure it is verified or tested accordingly.
2. What kind of services do you offer?
As a manufacturing powerhouse, we provide a holistic suite of services including pipe products, pipe fittings, packaging, and shipping. Beyond manufacturing, as a professional consulting firm, we deliver project consulting advice, pipe system solutions, and expert design recommendations. Furthermore, as an engineering-centric enterprise, we offer pipeline contractor services, pipe repair solutions, and complimentary maintenance guidance.
3. Do you support OEM/ODM services?
Absolutely, we provide extensive customization options in materials, specifications, logos, packaging, and connection methods. Our seasoned team is well-equipped to suggest solutions tailored to your specific projects, leveraging our successful case studies.
4. What are your terms of payment?
We accept both T/T and L/C at sight, ensuring flexible and secure transactions.
5. How can you guarantee the quality of your goods?
We warmly invite customers to visit our facility and inspect our products in person. Additionally, we conduct stringent testing as per customer requirements before order confirmation. To further assure quality, we can provide samples for customer testing before proceeding with bulk production.
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