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.
Shandong Donghong Pipe Industry Co., Ltd. proudly operates a cutting-edge high-pressure pipe fittings factory. We specialize in the production of an extensive range of high-pressure engineering fittings. Furthermore, we shine in customization, uniquely tailoring fittings to meet your exact requirements and specific operating conditions. Our unwavering commitment to the principle of achieving a flawlessly interconnected system ensures that we deliver unmatched 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 cornerstone of our Engineering Support High Density Polyethylene Pipe, ensuring impeccable stress transfer during high-pressure applications. Leveraging our specialized raw material design and development platform, we meticulously refine the binder resin to achieve unparalleled performance. This advanced composite material seamlessly integrates with our cutting-edge processes and state-of-the-art equipment, exemplifying our unwavering commitment to quality and innovation.
Plating is essential to our product's durability, providing outstanding corrosion resistance and significantly enhancing the shear strength between steel wire and bonding resin. Comprehensive data testing has shown that the choice of plating material dramatically impacts shear strength. Tin bronze plating outperforms with an impressive average shear strength of 20.69MPa, compared to 11.42MPa for brass. Consequently, our Reliable Srcp Tube for Water Transportation utilizes tin bronze-plated steel wire, ensuring it excels as the premier 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 stands as a monumental national investment in the salt chemical sector, focusing on the Xinjiang Lop Nur process pipeline. With an impressive annual conveying capacity, exceptional pipe bending resistance, and rigorous interface stability requirements, Donghong's adept technical team created a bespoke solution. Through meticulous design and the development of a unique non-standard product structure and interface program, they addressed the project's distinctive needs effectively. Donghong Pipeline Engineering Company expertly managed the entire construction process, ensuring the pipeline operates with unparalleled efficiency.
Wet Copper Refining Project in Kazakhstan
Confronted with the rigorous challenge of transporting highly corrosive copper sulfate media in open-air conditions, Donghong harnessed its cutting-edge high-pressure corrosion-resistant SRTP, Composite500 steel-plastic composite technology, and double-seal connection technology. This advanced methodology delivered an impeccable solution for the corrosion-resistant transportation of special media, thoroughly meeting the stringent project requirements.
"One Belt, One Road" - Indonesia OBI Nickel and Cobalt Project Deep Sea Landfill Project
Located on Obi Island in North Maluku Province, Indonesia, this extensive project is spearheaded by U.S. Borealis (Beijing) Pipeline Technology Co., Ltd. They meticulously handled the complex design for the deep-sea landfill (DSTP) system. After exhaustive economic investment evaluations and safety assessments, the dn1000 * 1.6MPa steel wire mesh skeleton polyethylene composite pipe was selected for its outstanding performance and reliability. Donghong's profound expertise played a crucial role, with the total project investment amounting to a significant 66.484 million yuan, underscoring our unwavering commitment to excellence.
At Shandong Donghong Pipe Industry Co., Ltd., we take immense pride in our robust and lasting partnerships with premier logistics companies. Our meticulously crafted and sophisticated transportation model seamlessly integrates 'steam transportation + railroad transportation + port and shipping logistics,' delivering unparalleled and efficient transportation solutions for our valued customers.
Drawing on our extensive expertise and years of proven transportation experience, we guarantee flawless and timely delivery, irrespective of challenging weather conditions, remote locations, or environmental obstacles. Our meticulously planned transportation strategy ensures that each shipment of our High Density Polyethylene Pipe with Abrasion and Chemical Resistance for Industry arrives punctually and in pristine condition.
1. Does your product meet international standards?
Our products proudly meet and surpass CE, BV, ISO, and Wars certifications, adhering to stringent international standards. Share your specific national standard with us, and we will diligently ensure compliance through meticulous verification or testing.
2. What kind of services do you offer?
As a premier manufacturing factory, we provide a comprehensive suite of services including pipe products, fittings, packaging, and shipping. Our proficiency encompasses project consulting, pipe system solutions, and design recommendations. Additionally, we offer top-tier pipeline contractor services, pipe repair, and complimentary maintenance guidance.
3. Do you support OEM/ODM services?
Absolutely! We excel in customizing materials, specifications, logos, packaging, and connection methods. Our adept team can deliver bespoke solutions tailored to your projects, drawing from a wealth of successful case studies.
4. What are your terms of payment?
We accept payments via T/T or L/C at sight, ensuring smooth and secure transactions.
5. How can you guarantee the quality of your goods?
We welcome our customers to visit our company for an in-depth inspection of our products. Rigorous testing is conducted as per customer requirements before order placement. Furthermore, we offer samples for customer testing to ensure exceptional product quality before commencing bulk production.
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