The Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP) signifies a revolutionary leap in mining products. This state-of-the-art pipe is fortified with a high-strength steel wire mesh skeleton, meticulously helically twisted and molded to perfection. Constructed from specially modified flame-retardant and antistatic high-density polyethylene (HDPE) and bonded with superior high-performance adhesive resin, this innovative combination guarantees the steel wire skeleton seamlessly integrates with both the inner and outer layers of HDPE. This results in a product that captures the unparalleled benefits of both steel and plastic pipes. Its robust and resilient design makes it the perfect choice for a wide array 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 used in our coal mine applications is meticulously crafted from flame-retardant and antistatic specialized modified materials, like carbon nanotube (CNT) modified materials and permanent coloring special materials. These materials, developed with our company's exclusive intellectual property rights, significantly enhance the mechanical properties of the pipes, ensuring full compliance with MT181 and MT558.1 standards while surpassing all performance expectations.
Enhanced Steel Wire: We utilize premium copper-plated steel wire that adheres to GB/T14450 standards, boasting an extraordinary strength of 2050MPA. This far exceeds the standard requirement of 1850MPA, guaranteeing exceptional durability and performance.
Adhesive Resin: Our proprietary adhesive resin, developed using our cutting-edge technology, offers unparalleled adhesion to steel wire and outstanding process adaptability. This groundbreaking innovation ensures our pipes remain both reliable and resilient across a multitude 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: Shandong Donghong Pipe Industry Co., Ltd. stands as the trailblazer in developing medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products, boasting an advanced and reliable connection method.
2. Trailblazers in Mining: We are the first to create steel wire mesh skeleton polyethylene composite pipes specifically engineered for the rigorous demands of underground coal mines.
3. Industry Leaders: Leading the market, Shandong Donghong Pipe Industry Co., Ltd. has set a new industry standard by introducing wire mesh skeleton polyethylene composite pipes to the coal mining sector.
4. High-Pressure Pioneers: We are proud to be the first to develop wire mesh skeleton polyethylene composite pipe products that can withstand pressures exceeding 3.5MPa, redefining high-pressure resistance.
5. Cutting-Edge Connection Technology: Our company leads in innovation with 'double sealing' and 'one-piece clamp' connection technologies, specifically designed for steel wire mesh skeleton polyethylene composite pipes in underground coal mines.
Shandong 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, an exemplary service provider in pipeline engineering, and a general contractor for comprehensive pipeline projects. Our diversified product portfolio encompasses four major categories: rainwater and sewage drainage pipes, municipal pipelines, industrial and mining pipelines, and pipelines designed 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, boasting 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 leads the way in advancing the digitalization, informatization, and intelligence of pipeline engineering, setting the standard 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 the quality of life through its unparalleled 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 innovation allows us to meticulously enhance the binder resin, achieving unparalleled synergy with our advanced 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 SRTP HDPE Pipe 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 landmark national investment in the salt chemical sector, specifically within the Xinjiang Lop Nur process pipeline. The pipeline boasts an impressive annual conveying capacity, exceptional pipe bending resistance, and meets stringent interface stability requirements. This demanded a tailored solution from Donghong's team of experts. Our technical team meticulously designed and developed a customized non-standard product structure and interface program to cater to the unique needs of this project. Donghong Pipeline Engineering Company managed the entire construction process, ensuring the pipeline operates 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 cutting-edge high pressure corrosion-resistant SRTP, Composite500 steel-plastic composite technology, and double-seal connection technology. This sophisticated approach provided an impeccable solution for the corrosion-resistant transport of special media, meeting this project's rigorous demands.
"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 U.S. Borealis (Beijing) Pipeline Technology Co., Ltd. They undertook the complex design for the deep-sea landfill (DSTP) system. After comprehensive economic investment comparisons and safety assessments, the dn1000 * 1.6MPa steel wire mesh skeleton polyethylene composite pipe was selected for its superior performance and reliability. Donghong's expertise played a pivotal role, with the project's total investment amounting to a substantial 66.484 million yuan, underscoring 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,' 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 exceed international standards, having passed rigorous CE, BV, ISO, and Wars certifications. We surpass standard requirements on all metrics. Let us know the specific national standard you require, and we will verify or test it to meet your needs.
2. What kind of services do you offer?
As a manufacturing factory, we offer an extensive suite of services that include pipe products, pipe fittings, packaging, and shipping. In our role as a professional consulting company, we provide project consulting, pipe system solutions, and design recommendations. As an engineering-centric enterprise, we deliver pipeline contracting, pipe repair services, and complimentary maintenance guidance.
3. Do you support OEM/ODM services?
Absolutely, we provide extensive customization options including materials, specifications, logos, packaging, and connection methods. Our expert team is ready to offer bespoke solution suggestions for your specific projects, backed by successful case studies for your reference.
4. What are your terms of payment?
We accept T/T or L/C at sight for your convenience.
5. How can you guarantee the quality of your goods?
We warmly invite you to visit our facility and inspect our products firsthand. We conduct rigorous testing as per customer requirements before finalizing orders. Additionally, we can provide samples for customer testing to ensure product qualification before proceeding with bulk production.
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