The Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP) embodies a revolutionary leap in mining product technology. This state-of-the-art pipe is reinforced with a high-strength steel wire mesh skeleton, meticulously helically twisted and molded to perfection. Constructed from modified flame-retardant and antistatic high-density polyethylene (HDPE), it is bonded with high-performance adhesive resin, ensuring a flawless integration of the steel wire skeleton with both the inner and outer HDPE layers. This innovative blend captures the superior qualities of both steel and plastic, setting a new benchmark in durability. Its robust design makes it an optimal choice for myriad 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 mining applications is crafted from specialized flame-retardant and antistatic modified materials, including carbon nanotube (CNT) modified materials and permanent coloring special materials. Developed with our company's proprietary technology, these materials significantly enhance the mechanical properties of the pipes. They ensure compliance with MT181 and MT558.1 standards and consistently surpass performance expectations, guaranteeing superior reliability and longevity.
Enhanced Steel Wire: Our copper-plated steel wire, adhering to GB/T14450 standards, boasts an impressive strength of 2050MPA, far exceeding the standard requirement of 1850MPA. This remarkable strength ensures unparalleled durability and optimal performance, significantly extending the lifespan of our pipes.
Adhesive Resin: Our patented adhesive resin, developed with proprietary technology, provides exceptional adhesion to steel wire and outstanding process adaptability. This innovative resin ensures our pipes maintain reliability and robustness across a variety of challenging environments, making them a premier choice for demanding industrial applications.
| 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 the trailblazers in our industry, we are proud to be the first enterprise to develop medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products. Our advanced and reliable connection methods set new benchmarks for innovation.
2. Trailblazers in Mining: We are the first enterprise to design steel wire mesh skeleton polyethylene composite pipes tailored specifically for the rigorous demands of underground coal mines. Our pioneering efforts lead the way in mining safety and efficiency.
3. Industry Leaders: Setting new industry standards, we are the first enterprise to successfully introduce wire mesh skeleton polyethylene composite pipes into the coal mining sector. Our groundbreaking products redefine reliability and performance.
4. High-Pressure Pioneers: As innovators, we are the first enterprise to create wire mesh skeleton polyethylene composite pipe products that can withstand pressures exceeding 3.5MPa. Our solutions push the boundaries of durability and strength.
5. Cutting-Edge Connection Technology: We are the first enterprise to develop 'double sealing' and 'one-piece clamp' connection technologies for steel wire mesh skeleton polyethylene composite pipes in underground coal mines. Our advancements ensure top-tier safety and seamless performance.
Shandong Donghong Pipe Industry Co., Ltd. proudly operates a state-of-the-art high-pressure pipe fittings factory, specializing in the production of an extensive range of high-pressure engineering fittings. We also excel in customization, tailoring unique fittings to meet your exact requirements and operating conditions. Our unwavering commitment to 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 spans 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 landmark 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 immense 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 stands at the forefront of advancing digitalization, informatization, and intelligence within the pipeline engineering sector, spearheading progress in the 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 such as 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 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 state-of-the-art platform allows us to meticulously enhance the binder resin, achieving unparalleled synergy with our processes and equipment, thus ensuring the highest standards of durability and performance.
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. This ensures superior performance and longevity in demanding environments.
Key Industrial and Mining Application Cases
Xinjiang Key Project Construction - Process Pipeline for Potassium Salt in Lop Nur, Xinjiang
This prestigious initiative stands as a landmark national investment within the salt chemical sector, particularly in the Xinjiang Lop Nur process pipeline. The pipeline's remarkable annual conveying capacity, coupled with its exceptional pipe bending resistance and stringent interface stability standards, necessitated a bespoke solution from Donghong's elite technical team. They meticulously engineered and crafted a tailored non-standard product structure and interface system to address the unique demands of the project. Donghong Pipeline Engineering Company oversaw the entire construction process, ensuring the pipeline operates with maximum efficiency and reliability.
Wet Copper Refining Project in Kazakhstan
Confronted with the challenge of open-air transportation of highly corrosive copper sulfate media, Donghong harnessed its cutting-edge high-pressure corrosion-resistant SRTP, Composite500 steel-plastic composite technology, and innovative double-seal connection technique. This advanced approach provided an impeccable solution for the corrosion-resistant conveyance of specialized media, fully meeting the project's stringent demands.
"One Belt, One Road" - Indonesia OBI Nickel and Cobalt Project Deep Sea Landfall Project
Located on Obi Island in North Maluku Province, Indonesia, this ambitious endeavor is managed by the U.S. Borealis (Beijing) Pipeline Technology Co., Ltd., who spearheaded the intricate design of the deep-sea tailings placement (DSTP) system. After thorough economic investment comparisons and rigorous safety evaluations, the dn1000 * 1.6MPa steel wire mesh skeleton polyethylene composite pipe was selected for its superior performance and unwavering reliability. Donghong's expertise played a pivotal role, with the project culminating in a total investment of 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 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 Industrial SRTP HDPE Pipes proudly surpass the stringent benchmarks set by CE, BV, ISO, and Wars certifications, exceeding all standard requirements. If you require verification against any specific national standard, please inform us, and we will conduct the necessary tests to ensure compliance.
2. What kind of services do you offer?
At Shandong Donghong Pipe Industry Co., Ltd., we provide an all-encompassing suite of services. As a manufacturing powerhouse, we deliver pipe products, fittings, packaging, and shipping. Our expertise as a consulting company ensures you receive top-notch project consulting, pipe system solutions, and design recommendations. Additionally, as an engineering-driven enterprise, we offer pipeline contractor services, pipe repair services, and complimentary maintenance guidance.
3. Do you support OEM/ODM services?
Absolutely! We offer extensive OEM/ODM services, including material customization, specifications, logos, packaging, and connection methods. Our seasoned team is ready to provide tailored solutions for your unique projects, supported by a wealth of successful case studies.
4. What are your terms of payment?
We accommodate payment through T/T or L/C at sight to ensure smooth transactions.
5. How can you guarantee the quality of your goods?
We eagerly invite customers to our facilities for an on-site inspection of our superior products. Furthermore, we conduct rigorous, customer-specified testing before order finalization. To further assure quality, we can dispatch samples for your testing, ensuring our products meet your standards before large-scale production.
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