The Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP) is an innovative mining solution designed for superior reinforcement. This cutting-edge product features a high-strength steel wire mesh skeleton, helically twisted and molded on both sides, combined with modified flame-retardant and antistatic high-density polyethylene (HDPE). Utilizing high-performance adhesive resin, the steel wire skeleton is seamlessly bonded with inner and outer layers of HDPE, merging the best qualities of both steel and plastic pipes. This versatile pipe excels in applications such as underground water supply and drainage, slurry spraying, gas extraction, and air pressure regulation.
Polyethylene Raw Materials: The inner and outer polyethylene resin used in the coal mining sector is enhanced with flame-retardant and antistatic specially modified materials, including carbon nanotube (CNT) modified materials and permanently colored special materials, all developed with our company's independent intellectual property rights. Beyond meeting MT181 and MT558.1 standards, these materials boast improved mechanical properties.
Enhanced Steel Wire: Crafted from copper-plated steel wire that meets GB/T14450 standards, this wire boasts a strength of 2050MPA, significantly surpassing the standard requirement of 1850MPA.
Adhesive Resin: This patented adhesive resin, developed with our company's independent intellectual property rights, ensures robust adhesion to the steel wire and exceptional process adaptability.
| 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 development of medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products with innovative connection methods.
2. Leading the industry in creating steel wire mesh skeleton polyethylene composite pipes specifically designed for the rigorous demands of underground coal mines.
3. Trailblazing the promotion and implementation of wire mesh skeleton polyethylene composite pipes in coal mines, setting new industry benchmarks.
4. The first enterprise to engineer wire mesh skeleton polyethylene composite pipe products capable of withstanding pressures above 3.5MPa.
5. Innovators of the 'double sealing' and 'one-piece clamp' connection technologies for steel wire mesh skeleton polyethylene composite pipes used in the challenging environments of underground coal mines.
Donghong has established a state-of-the-art high-pressure pipe fittings factory, dedicated to producing a diverse range of high-pressure engineering fittings. Beyond our extensive standard offerings, we excel at customizing specialized fittings tailored to your unique requirements and the specific conditions of your industrial and mining operations. Our commitment to excellence ensures an optimized connection system, embodying our manufacturing philosophy of 'good connection to achieve a good system'.
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 made its mark as a premier manufacturer of engineering pipelines, a comprehensive pipeline engineering service provider, and a general contractor for pipeline engineering. With a diverse portfolio, the company specializes in four major categories of functional and customized pipelines: rainwater and sewage drainage pipe, municipal pipeline, industrial and mining pipeline, and pipelines for national key projects. On November 6, 2017, Donghong proudly became the first composite pipeline manufacturer in China to be listed on the main board of Shanghai.
Boasting a formidable team of over 200 R&D personnel and holding more than 100 patents, Donghong leverages national platforms, such as the national enterprise technology center, national CNAS laboratory, academician expert workstation, and postdoctoral workstation, to push the boundaries in digitalization, informatization, and intelligence of pipeline engineering. Our relentless research efforts solidify our leadership in the engineering pipeline industry.
Donghong has been a pivotal contributor to national key strategic and livelihood projects. Our expertise and innovation have supported significant initiatives including the South-to-North Water Diversion, Hanjinwei, Beijing-Xinjiang Expressway, One Belt, One Road, standardized farmland development, urban and rural water supply integration, Liren gas, and centralized heating projects. Donghong continues to lead and serve with a commitment to excellence in engineering pipeline solutions.
Experimental Verification
Key Raw Materials
Binder resin is pivotal to our product, ensuring the smooth transfer of pipe pressure process stress. As a crucial composite material, the performance of the binder resin largely dictates the quality level of our product. At Shandong Donghong Pipe Industry Co., Ltd., we utilize a specialized raw material design and development platform that enhances the resin and ensures meticulous alignment with our processes and equipment.
Plating provides excellent corrosion protection while enhancing the shear strength between steel wire and bonding resin. Our extensive data testing revealed that the average shear strength is 20.69 MPa for tin bronze and 11.42 MPa for brass, showing significant variance in shear strength with different plating and bonding resins. Consequently, we have selected tin bronze plated steel wire as the substrate for its superior pressure-bearing capabilities.
Premier Industrial and Mining Application Cases
Xinjiang Key Project Construction: Process Pipeline for Potassium Salt in Lop Nur, Xinjiang
This project is a nationally significant investment aimed at salt chemical processes in Xinjiang Lop Nur. The pipeline system, crucial for this project, requires stringent standards for annual conveyance capacity, bending resistance, and interface stability. The Donghong technical team meticulously designed and developed a non-standard, customized product structure and interface program tailored to the project conditions. Additionally, the Donghong Pipeline Engineering Company oversees the entire construction process, ensuring the pipeline's efficient operation.
Wet Copper Refining Project in Kazakhstan
For the open-air transportation of highly corrosive copper sulfate media, Donghong provides an exemplary solution using high-pressure, corrosion-resistant SRTP, composite500 steel-plastic composite technology, and advanced double-seal connection technology. This innovative approach perfectly addresses the challenges of transporting special corrosive media.
"One Belt, One Road" Initiative: Indonesia OBI Nickel and Cobalt Project Deep Sea Landfill Project
Situated on Obi Island, North Maluku Province, Indonesia, this project is managed by U.S. Borealis (Beijing) Pipeline Technology Co., Ltd., tasked with designing the deep-sea landfill (DSTP) system. After thorough economic investment comparisons and safety assessments for operation and maintenance, the project selected the DN1000 * 1.6MPa steel wire mesh skeleton polyethylene composite pipe, reaffirming Donghong's expertise. The project, valued at 66.484 million yuan, showcases Donghong's wisdom and innovative solutions.
Leveraging long-term collaborations with numerous logistics companies, we have meticulously crafted an integrated transportation model. By seamlessly combining steam transportation, railroad systems, and port and shipping logistics, we deliver the most efficient and economical transportation solutions to meet our customers' needs.
With our extensive expertise in transportation, we guarantee reliable delivery regardless of temperature extremes, remote locations, or challenging environments. Our all-encompassing transportation plans ensure that every batch of goods reaches its destination promptly and securely.
1. Does your product meet international standards?
Our products have passed CE, BV, ISO, and WARS certifications, exceeding standard requirements. You can specify any national standard you need, and we will verify or test our products accordingly.
2. What types of services do you offer?
As a manufacturing facility, we provide high-quality pipe products, fittings, packaging, and shipping. As a professional consulting company, we offer project consulting, pipe system solutions, and design advice. Additionally, as an engineering-centric enterprise, we provide pipeline contracting, repair services, and free maintenance guidance.
3. Do you support OEM/ODM services?
Yes, we offer customization in material, specifications, logos, packaging, and connection methods. Our expert team provides tailored solutions for your specific projects, with a proven track record of successful implementations.
4. What are your terms of payment?
We accept T/T or L/C at sight.
5. How do you guarantee the quality of your products?
We warmly welcome customers to visit our company and inspect our products firsthand. We also conduct stringent tests as per customer requirements before orders are placed. Samples can be dispatched for customers to perform their own tests to ensure product quality before bulk production.
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