Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP for short) is a revolutionary mining product. This state-of-the-art pipe features a robust mesh skeleton meticulously crafted from high-strength steel wires, expertly helically twisted and molded to ensure unparalleled performance. Encased within modified flame-retardant and antistatic high-density polyethylene (HDPE), this composite marvel is bonded with high-performance adhesive resin. This avant-garde design masterfully blends the superior qualities of both steel and plastic pipes, rendering it the ultimate solution for a myriad of applications such as underground water supply and drainage, slurry spraying, gas extraction, and air pressure management.
Polyethylene Raw Materials: The inner and outer polyethylene resin used in coal mining fields is meticulously engineered from flame-retardant and antistatic special modified materials. These high-performance materials, which include cutting-edge carbon nanotube (CNT) modifications and permanent coloring special materials, are developed with exclusive intellectual property rights. Conforming to the stringent MT181 and MT558.1 standards, these pipes exhibit significantly enhanced mechanical properties, ensuring reliability and durability in demanding environments.
Enhanced Steel Wire: We employ premium copper-plated steel wire that adheres to the rigorous GB/T14450 standards. Exhibiting an impressive strength of 2050MPA, it notably exceeds the standard requirement of 1850MPA, ensuring superior performance and longevity.
Adhesive Resin: Our patented adhesive resin, developed with our unique intellectual property rights, showcases extraordinary steel wire adhesion and exceptional process adaptability. This innovative solution sets a new benchmark in the industry, offering unmatched quality and reliability.
| 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 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
| Note: can be customized by customer's needs. |
1. Shandong Donghong Pipe Industry Co., Ltd. is the pioneering enterprise that developed medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products, along with their innovative connection methods. Our commitment to innovation has set us apart as a leader in the industry.
2. We are the trailblazing company that introduced steel wire mesh skeleton polyethylene composite pipes specifically designed for underground coal mines. These pipes ensure superior durability and safety, revolutionizing mining operations.
3. As a groundbreaking entity, we not only promoted wire mesh skeleton polyethylene composite pipes for underground coal mines but also revolutionized the industry with our cutting-edge offerings. Our innovative products have set new standards of excellence in the field.
4. We stand as the foremost enterprise in developing wire mesh skeleton polyethylene composite pipe products capable of withstanding pressures above 3.5MPa. Our products guarantee top-notch performance and unmatched reliability.
5. Shandong Donghong Pipe Industry Co., Ltd. leads the industry by creating and implementing the revolutionary 'double sealing' and 'one-piece clamp' connection technology for steel wire mesh skeleton polyethylene composite pipes in underground coal mines. These advancements significantly enhance safety and efficiency.
Shandong Donghong Pipe Industry Co., Ltd. has proudly established a state-of-the-art high-pressure pipe fittings factory, dedicated to producing a wide range of high-pressure engineering fittings. We also offer bespoke customization services, tailoring special fittings to meet unique customer requirements and specific industrial and mining conditions. Our manufacturing philosophy is centered on achieving 'good connection to achieve a good system,' ensuring unparalleled performance and reliability for every project. With unrivaled expertise and cutting-edge technology, we promise excellence in every product, elevating standards and exceeding expectations in the high-pressure pipe industry.
About
us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856) is strategically headquartered in the historic city of Qufu, China, the esteemed hometown of Confucius. Established in 1997, Donghong has emerged as a foremost manufacturer and renowned service provider in the engineering pipeline sector. We take pride in being a leading general contractor for comprehensive pipeline engineering projects, delivering four major categories of functional and bespoke pipelines: rainwater and sewage drainage pipes, municipal pipelines, industrial and mining pipelines, and pipelines dedicated to national key projects. As the pioneering composite pipeline manufacturer listed on China's main board, Donghong achieved this milestone on November 6, 2017, on the Shanghai main board.
With a formidable team of over 200 R&D experts and an impressive collection of over 100 patents, Donghong harnesses the power of national technological platforms, including the national enterprise technology center, CNAS laboratory, academician expert workstation, and postdoctoral workstation. Our unwavering dedication to innovation propels our research into the digitalization, informatization, and intelligence of pipeline engineering, firmly establishing Donghong as an industry trailblazer.
Donghong leads the charge in essential national and public welfare projects, significantly advancing the engineering pipeline industry. Our remarkable contributions encompass landmark projects such as the South-to-North Water Diversion, Hanjinwei, Beijing-Xinjiang Expressway, One Belt, One Road initiatives, standardized farmland, urban-rural water supply integration, Liren gas, centralized heating, and a myriad of other critical infrastructure ventures.
Experimental Verification
Key Raw Materials
The binder resin is an indispensable element of our Srtp HDPE Pipe, orchestrating the seamless transmission of stress during pressure application. As one of the crucial composite materials, its performance plays a pivotal role in the overall quality of the product. At Shandong Donghong Pipe Industry Co., Ltd., we have established a state-of-the-art raw material design and development platform. This platform is meticulously engineered to enhance the binder resin's efficacy, ensuring perfect harmony with our sophisticated processes and advanced equipment.
Plating not only provides exceptional corrosion resistance but also significantly boosts the shear strength between the steel wire and bonding resin. Our rigorous data testing and comparative analysis show that tin bronze exhibits an average shear strength of 20.69MPa, whereas brass averages just 11.42MPa. This substantial difference in shear strength across various plating and bonding resins underscores our choice of tin bronze-plated steel wire as the pressure-bearing substrate. Its outstanding performance is the backbone of our product's reliability.
Key Industrial and Mining Application Cases
Xinjiang Key Project Construction - Process Pipeline for Potassium Salt in Lop Nur, Xinjiang
This national key investment project in Xinjiang Lop Nur centers on advanced salt chemical processes, demanding exceptional annual conveying capacity, superior pipe bending resistance, and interface stability. Shandong Donghong Pipe Industry Co., Ltd.'s expert technical team has meticulously engineered a bespoke, non-standard product structure and interface solution to meet these rigorous project requirements. Moreover, Donghong Pipeline Engineering Company provided comprehensive oversight throughout the entire construction phase, guaranteeing the pipeline's optimal performance and reliability.
Wet Copper Refining Project in Kazakhstan
This project demands the open-air transportation of highly corrosive copper sulfate media. Shandong Donghong Pipe Industry Co., Ltd.'s high-pressure, corrosion-resistant SRTP, combined with the advanced Composite500 steel-plastic composite technology and Seal-Seal double-seal connection technology, delivers an unparalleled solution for the efficient and corrosion-resistant transport of these specialized media.
"One Belt, One Road" - Indonesia OBI Nickel and Cobalt Project Deep Sea Landfill Project
Situated on Obi Island in North Maluku Province, Indonesia, this project is spearheaded by U.S. Boreal(Beijing) Pipeline Technology Co., Ltd. The deep-sea landfill (DSTP) system was meticulously selected following extensive economic investment comparisons and meticulous operation and maintenance safety evaluations. Implementing DN1000*1.6MPa steel wire mesh skeleton polyethylene composite pipes, this project epitomizes innovation and excellence, with a total investment value of 66.484 million yuan, highlighting Shandong Donghong Pipe Industry Co., Ltd.'s unmatched expertise in the field.
Our longstanding partnerships with numerous logistics companies have empowered us to develop a cutting-edge and highly efficient transportation mode. By seamlessly integrating "steam transportation + railroad transportation + port and shipping logistics," we deliver the most effective and reliable transportation solutions available. This advanced logistics network ensures your goods are handled with the utmost care, from departure to arrival.
Leveraging our extensive transportation experience, we guarantee that, regardless of extreme temperatures, isolated locations, or challenging environments, our meticulously orchestrated logistics ensure that each batch of goods reaches its destination promptly and securely. Trust in our proven expertise to deliver excellence, no matter the circumstances.
1. Does your product meet international standards?
Our products proudly exceed CE, BV, ISO, and WARS certifications, ensuring they meet and surpass international standards. Should you need compliance with specific national regulations, simply inform us, and we will verify or tailor testing to meet your precise needs.
2. What types of services do you provide?
As a versatile manufacturing powerhouse, Shandong Donghong Pipe Industry Co., Ltd. provides a comprehensive range of pipe products, fittings, and packaging, coupled with seamless shipping services. We offer profound expertise in consulting, delivering end-to-end project advice, innovative pipe system solutions, and sophisticated design recommendations. Our engineering acumen extends to pipeline contracting, meticulous repair services, and complimentary maintenance guidance to ensure flawless system operation.
3. Do you support OEM/ODM services?
Absolutely, we excel in customization across various parameters including materials, specifications, logos, packaging, and connection methods. Our adept team specializes in delivering bespoke solutions tailored to your project specifications, supported by a portfolio of successful case studies that highlight our exceptional capabilities.
4. What are your payment terms?
We accept payment via T/T or L/C at sight, ensuring flexibility and security for your transactions.
5. How can you ensure the quality of your products?
We warmly invite all customers to visit our company for an in-person inspection of our products. To further assure quality, we conduct rigorous tests according to your specifications before you place an order. Additionally, we offer sample dispatch prior to bulk production for your independent testing and qualification, ensuring you receive superior products.
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