The Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP) marks a revolutionary leap in mining products. This state-of-the-art pipe features a high-strength steel wire mesh skeleton, meticulously helically twisted and expertly molded. Constructed from modified flame-retardant and antistatic high-density polyethylene (HDPE) and bonded with high-performance adhesive resin, this pipe offers unparalleled integration of the steel wire skeleton with both the inner and outer layers of HDPE. It brilliantly combines the best attributes of steel and plastic pipes. Its robust and durable design makes it perfect for a variety 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 premium flame-retardant and antistatic specialized modified materials, including cutting-edge carbon nanotube (CNT) modified materials and permanent coloring special materials. Developed under our company's independent intellectual property rights, these materials significantly enhance the mechanical properties of our pipes, ensuring complete compliance with MT181 and MT558.1 standards while surpassing all performance expectations.
Enhanced Steel Wire: We utilize copper-plated steel wire that not only meets but exceeds the rigorous GB/T14450 standards, boasting an impressive strength of 2050MPA. This far exceeds the standard requirement of 1850MPA, guaranteeing superior durability and exceptional performance.
Adhesive Resin: Developed with our proprietary technology, our patented adhesive resin offers unmatched adhesion to steel wire and exceptional process adaptability. This groundbreaking innovation ensures our pipes remain reliable and robust 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 inaugural enterprise to develop medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products. These products feature an advanced and reliable connection method that sets them apart in the industry.
2. Trailblazers in Mining: Spearheading innovation in the mining sector, we are the first company to devise steel wire mesh skeleton polyethylene composite pipes tailored specifically for the rigorous demands of underground coal mines.
3. Industry Leaders: We are the premier enterprise to introduce wire mesh skeleton polyethylene composite pipes into the coal mining sector, establishing a new benchmark for the entire industry.
4. High-Pressure Pioneers: We have achieved another milestone as the first enterprise to create wire mesh skeleton polyethylene composite pipe products capable of withstanding pressures above 3.5MPa, ensuring unmatched durability and performance.
5. Cutting-Edge Connection Technology: Leading the way in innovation, Shandong Donghong Pipe Industry Co., Ltd. is the first to pioneer 'double sealing' and 'one-piece clamp' connection technologies for steel wire mesh skeleton polyethylene composite pipes used in the demanding environment of 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. Given the pipeline's demanding annual conveying capacity, exceptional pipe bending resistance, and stringent interface stability requirements, Donghong's expert technical team crafted a bespoke solution. They meticulously designed and developed a custom non-standard product structure and interface program tailored to the unique needs of the project. Donghong Pipeline Engineering Company managed the entire construction process, ensuring the pipeline operates with unparalleled efficiency.
Wet Copper Refining Project in Kazakhstan
To tackle the challenge of open-air transport of highly corrosive copper sulfate media, Donghong employed its cutting-edge high-pressure corrosion-resistant SRTP, Composite500 steel-plastic composite technology, and advanced double-seal connection technology. This sophisticated solution ensured flawless corrosion-resistant transportation of special media, perfectly meeting the project's stringent 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 overseen by the U.S. Borealis (Beijing) Pipeline Technology Co., Ltd. They handled 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 selected for its superior performance and reliability. Donghong's expertise played a pivotal role, with the project's total investment reaching 66.484 million yuan, highlighting 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 unparalleled expertise and a wealth of transportation experience, Shandong Donghong Pipe Industry Co., Ltd. guarantees seamless delivery across any weather condition, remote location, or environmental hurdle. Our meticulously detailed and comprehensive transportation plans ensure that each shipment of our Reliable Srcp Tube for Water Transportation reaches its destination promptly and remains in pristine condition throughout the journey.
1. Does your product meet international standards?
Our products proudly surpass the highest international standards, having secured CE, BV, ISO, and Wars certifications. All performance metrics exceed the necessary requirements. If you have specific national standards in mind, kindly inform us, and we will perform the necessary verifications and tests to ensure compliance.
2. What kind of services do you offer?
As a versatile manufacturing factory, we offer an extensive array of services ranging from pipe products and fittings to packaging and shipping. Our expertise extends to professional consultancy, providing comprehensive project advice, innovative pipe system solutions, and meticulous design recommendations. Furthermore, as an engineering-oriented enterprise, we specialize in pipeline contracting, pipe repair services, and provide free expert maintenance guidance.
3. Do you support OEM/ODM services?
Indeed, we excel in providing bespoke customization services covering materials, specifications, logos, packaging, and connection methods. Our seasoned team is adept at offering tailored solutions for your unique projects, supported by a wealth of successful case studies for your consideration.
4. What are your terms of payment?
We facilitate seamless transactions through T/T or L/C at sight.
5. How can you guarantee the quality of your goods?
We cordially invite you to visit our company for an in-depth inspection of our products, ensuring utmost confidence in your purchase. Additionally, we conduct stringent tests based on customer requirements before finalizing orders. For additional assurance, we can provide samples for customer testing, guaranteeing product qualification before bulk production commences.
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