The Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP for short) represents a groundbreaking innovation in mining solutions. This advanced pipe features a high-strength steel wire mesh skeleton, helically twisted and meticulously molded, which is then bonded with modified flame-retardant and antistatic high-density polyethylene (HDPE) using high-performance adhesive resin. The result is a seamless integration of the advantages of both steel and plastic pipes. Ideal for a myriad of applications, this pipe excels in underground water supply and drainage, slurry spraying, gas extraction, and air pressure management.
Polyethylene Raw Materials: Our inner and outer polyethylene resin materials, specifically designed for the coal mining sector, incorporate flame-retardant and antistatic properties. These special modified materials, such as carbon nanotube (CNT) modified substances and permanently colored special materials, are developed with our proprietary technology. Beyond merely meeting MT181 and MT558.1 standards, these materials offer enhanced mechanical properties.
Enhanced Steel Wire: Utilizing copper-plated steel wire that meets GB/T14450 requirements, our product boasts a strength of 2050MPA, significantly surpassing the standard 1850MPA requirements.
Adhesive Resin: Our patented adhesive resin, developed with our proprietary technology, ensures exceptional adhesion to steel wire and superior process adaptability, setting a new standard in performance 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 |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
/ |
1. Pioneering the Future: The first enterprise to develop a revolutionary medium and high-pressure steel wire mesh skeleton polyethylene composite pipe, complete with an innovative connection method.
2. Industry Trailblazer: The first enterprise to engineer the steel wire mesh skeleton polyethylene composite pipe specifically designed for the rigorous demands of underground coal mines.
3. Groundbreaking Innovation: The first enterprise to successfully introduce the wire mesh skeleton polyethylene composite pipe to the coal mining sector, setting new industry standards and leading the field with unmatched excellence.
4. Engineering Excellence: The first enterprise to pioneer and develop wire mesh skeleton polyethylene composite pipe products capable of withstanding pressures above 3.5MPa.
5. Advanced Connection Technologies: The first enterprise to invent and implement 'double sealing' and 'one-piece clamp' connection technologies for steel wire mesh skeleton polyethylene composite pipes used in the demanding environments of underground coal mines.
Donghong has established a state-of-the-art high-pressure pipe fittings factory, dedicated to producing a diverse array of high-pressure engineering fittings. Additionally, we offer tailored solutions, customizing special fittings to match unique customer specifications and diverse industrial and mining conditions. Our manufacturing philosophy, "good connection to achieve a good system," ensures optimal integration and performance.
About
Us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856) is headquartered in the prestigious hometown of Confucius, Qufu, China. Established in 1997, Donghong stands as a premier manufacturer and service provider in the engineering pipeline industry. Specializing in four key categories-rainwater & sewage drainage pipes, municipal pipelines, industrial & mining pipelines, and pipelines for national key projects-Donghong has cemented its reputation as a general contractor for comprehensive pipeline engineering solutions. On November 6, 2017, Donghong proudly made history by being listed on the main board of Shanghai, becoming the first engineering composite pipeline manufacturer in China to achieve this milestone.
With a robust team of over 200 R&D professionals and an impressive portfolio of more than 100 patents, Donghong leverages its national enterprise technology center, CNAS laboratory, academician expert workstation, postdoctoral workstation, and other eminent research platforms. Through continuous innovation in digitalization, informatization, and intelligence, Donghong pioneers advancements in the engineering pipeline sector, leading the industry into a new era of technological excellence.
Donghong plays a crucial role in numerous national key strategic and livelihood projects, driving the advancement of the engineering pipeline industry. Our contributions span major initiatives such as the South-to-North Water Diversion, Hanjinwei, Beijing-Xinjiang Expressway, One Belt, One Road, standardized farmland, urban-rural water supply integration, Liren gas, and centralized heating. These projects underscore our commitment to excellence and our dedication to serving the nation's critical infrastructural needs.
Experimental Verification - Ensuring Excellence
Premium Raw Materials - The Foundation of Quality
The binder resin is crucial to the seamless performance of our Durable Srtp HDPE Pipe for Water, ensuring efficient stress transfer during the pressure process. As a composite key material, the quality of the binder resin significantly determines the overall product quality. At Shandong Donghong Pipe Industry Co., Ltd., we have a specialized design and development platform to enhance the binder resin, tailoring it to align perfectly with our processes and equipment, thereby achieving superior performance.
Plating plays a dual role; it offers corrosion protection and amplifies the shear strength between the steel wire and bonding resin. Through rigorous data testing and comparison, we discovered that the shear strength of tin bronze reaches an average of 20.69MPa, while brass averages 11.42MPa. This significant difference in shear strength with various platings led us to adopt tin bronze plated steel wire as our pressure-bearing substrate, ensuring superior performance and reliability.
Key Industrial and Mining Application Cases
Xinjiang Key Project Construction - The Process Pipeline of Potassium Salt in Lop Nur, Xinjiang
This project represents a significant national investment in the salt chemical sector, focusing on the Lop Nur process pipeline in Xinjiang. With an annual conveying capacity that demands exceptional pipe bending resistance and interface stability, our expert team at Donghong designed a bespoke product structure and interface solution tailored to these rigorous requirements. Additionally, Donghong Pipeline Engineering Company ensured seamless construction management, guaranteeing the pipeline's optimal performance.
Wet Copper Refining Project in Kazakhstan
For the open-air transportation of highly corrosive copper sulfate media, Donghong offers an unparalleled solution. Utilizing our high-pressure corrosion-resistant SRTP, Composite500 steel-plastic composite technology, and seal-seal double-seal connection technology, we effectively address the challenges of transporting special corrosive media.
"One Belt, One Road" - Indonesia OBI Nickel and Cobalt Project Deep Sea Landfill Project
Located on Obi Island in North Maluku Province, Indonesia, this project was undertaken by U.S. Borealis (Beijing) Pipeline Technology Co., Ltd. for the deep-sea landfill (DSTP) system. Following a comprehensive economic investment comparison and safety assessment, the dn1000 * 1.6MPa steel wire mesh skeleton polyethylene composite pipe was selected, showcasing Donghong's expertise. The project's total investment stands at 66.484 million yuan.
Our long-standing partnerships with several top-tier logistics companies enable us to offer a seamless and efficient transportation network. By integrating diverse transportation modes-be it steam transportation, railroad transit, or port and shipping logistics-we craft tailored solutions that ensure optimal delivery for our valued customers.
Leveraging our extensive experience in transportation, we are proficient in overcoming extreme weather conditions, remote areas, and challenging environments. We devise comprehensive and robust transportation plans that guarantee timely and safe delivery of every batch, ensuring your goods reach their destination on the first attempt.
1. Does your product meet international standards?
Our products have passed CE, BV, ISO, and WARS certifications, with all figures exceeding standard requirements. Please let us know the specific national standards you need, and we will verify or test them for you accordingly.
2. What kind of services do you offer?
As a manufacturing factory, we provide high-quality pipe products, pipe fittings, packaging, and shipping services. As a professional consulting company, we offer project consulting advice, pipe system solutions, and design suggestions. As an engineering-focused enterprise, we also provide pipeline contractor services, pipe repair services, and complimentary maintenance guidance.
3. Do you support OEM/ODM services?
Yes, we offer extensive customization options in material, specifications, logos, packaging, connection methods, and more. Our expert team can provide tailored solutions for your specific projects, with numerous successful cases to our credit.
4. What are your terms of payment?
We accept T/T or L/C at sight.
5. How can you guarantee the quality of the goods you offer?
We warmly welcome all customers to visit our company and inspect our products firsthand. We can also conduct strict tests as per customer requirements before order placement. Additionally, we can dispatch samples for customers to perform their own tests to ensure product quality before bulk production.
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