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 trailblazer in developing medium and high-pressure steel wire mesh skeleton polyethylene composite pipes. These state-of-the-art pipes feature an advanced and exceptionally reliable connection method, making us a leader in the field.
2. Trailblazers in Mining: We set the industry standard as the first enterprise to engineer specialized steel wire mesh skeleton polyethylene composite pipes for underground coal mines. Our pipes deliver unmatched durability and safety, redefining mining efficiency.
3. Industry Leaders: As industry pioneers, we are the first to successfully introduce wire mesh skeleton polyethylene composite pipes in the coal mining sector. Our innovative solutions revolutionize industry standards, boosting operational efficiency and safety.
4. High-Pressure Pioneers: At the forefront of technological advancements, Shandong Donghong Pipe Industry Co., Ltd. leads the way in creating wire mesh skeleton polyethylene composite pipe products that withstand pressures above 3.5MPa, ensuring unparalleled performance and reliability.
5. Cutting-Edge Connection Technology: As innovators, 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. Our groundbreaking designs guarantee secure and efficient connections.
At Shandong Donghong Pipe Industry Co., Ltd., we pride ourselves on our state-of-the-art high-pressure pipe fittings factory. Our specialization lies in crafting a comprehensive range of high-pressure engineering fittings. Beyond our standard offerings, we excel in customization, creating unique fittings designed to meet your specific requirements and operating conditions. Adhering to our principle of achieving a seamlessly connected system, we ensure every product we deliver is of unparalleled quality and precision. Choose us for top-tier performance and reliability in high-pressure fittings.
About
us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856) stands proudly headquartered in the historic and culturally rich hometown of Confucius - Qufu, China. Since its inception in 1997, Donghong has distinguished itself 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 spans four major categories: rainwater and sewage drainage pipes, municipal pipelines, industrial and mining pipelines, and pipelines for national key projects. Embodying the pinnacle of industry expertise and innovation, Donghong marked a significant milestone on November 6, 2017, by being listed on the Shanghai Main Board, solidifying its position as China's first main board-listed engineering composite pipeline manufacturer.
Donghong prides itself on its robust R&D capabilities, boasting a team of over 200 dedicated research and development professionals and a portfolio of more than 100 patents. Utilizing 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, driving innovation and progress in the engineering pipeline industry.
Committed 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 enhancing infrastructure and improving quality of life through its engineering expertise.
Experimental Verification
Key Raw Materials
At Shandong Donghong Pipe Industry Co., Ltd., the binder resin serves as the cornerstone of our High Density Polyethylene Pipe, guaranteeing unparalleled stress transfer during high-pressure applications. Our state-of-the-art raw material design and development platform enables us to meticulously fine-tune the binder resin, ensuring exceptional performance and seamless integration with our cutting-edge processes and advanced equipment. This superior composite material epitomizes our unwavering commitment to quality and innovation.
Plating is a pivotal aspect of our product's durability, providing outstanding corrosion resistance while significantly enhancing the shear strength between the steel wire and bonding resin. Through rigorous data testing, we discovered that the selection of plating material has a profound impact on shear strength. Tin bronze plating exhibited exceptional superiority with an average shear strength of 20.69MPa, in contrast to 11.42MPa for brass. Consequently, our Reliable Srcp Tube for Water Transportation incorporates tin bronze-plated steel wire, ensuring it stands as the premier choice 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 landmark national investment in the salt chemical sector, especially 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 expert technical team. They meticulously designed and engineered a custom non-standard product structure and interface program to address the project's unique needs. Donghong Pipeline Engineering Company managed the entire construction process, ensuring the pipeline functions with peak efficiency and reliability.
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 innovative double-seal connection technology. This advanced approach offered a perfect solution for the corrosion-resistant transport of special media, meeting the project's stringent requirements with excellence.
"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 managed by the U.S. Borealis (Beijing) Pipeline Technology Co., Ltd., which undertook the intricate design task for the deep-sea landfill (DSTP) system. Following thorough economic investment comparisons and extensive 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 66.484 million yuan, highlighting our unwavering commitment to excellence.
At Shandong Donghong Pipe Industry Co., Ltd., we take immense pride in our long-standing alliances with elite logistics providers. We have meticulously designed an advanced transportation model that ingeniously blends 'steam transportation, railroad transportation, port, and shipping logistics,' ensuring our clients experience unmatched transportation solutions.
Drawing on our vast expertise and years of transportation experience, we pledge seamless delivery regardless of weather conditions, remoteness, or environmental challenges. Our meticulously crafted transportation plans ensure each shipment of our High Density Polyethylene Pipe with Abrasion and Chemical Resistance for Industry reaches you promptly and in impeccable condition.
1. Does your product meet international standards?
Our products proudly boast CE, BV, ISO, and Wars certifications, each one surpassing the stringent international standards. Share your specific national standard with us, and we will ensure meticulous compliance through dedicated verification and thorough testing.
2. What kind of services do you offer?
As a leading manufacturing factory, we provide a comprehensive suite of services encompassing pipe products, fittings, packaging, and logistics. Our unparalleled expertise includes project consulting, complete pipe system solutions, and insightful design recommendations. Additionally, we offer top-tier pipeline contractor services, pipe repair, and complimentary maintenance guidance to ensure the longevity and efficiency of your projects.
3. Do you support OEM/ODM services?
Absolutely! We excel in customizing materials, specifications, logos, packaging, and connection methods to precisely meet your needs. Our skilled team delivers bespoke solutions for your projects, supported by a proven track record of successful case studies.
4. What are your terms of payment?
We gladly accept payments via T/T or L/C at sight, offering you flexibility and security.
5. How can you guarantee the quality of your goods?
We welcome you to visit our company to personally inspect our products. We perform rigorous testing based on your specific requirements before any order is placed, ensuring the highest quality. Additionally, we provide samples for your evaluation, allowing you to verify product quality before proceeding to bulk production.
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