Introducing the Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP): a revolutionary mining solution! This cutting-edge product is fortified with a high-strength steel wire mesh skeleton, meticulously helically twisted and molded for unparalleled durability. Encased in modified flame-retardant and antistatic high-density polyethylene (HDPE), and bonded with high-performance adhesive resin, this composite integrates the robust advantages of both steel and plastic pipes. Its applications are extensive, making it ideal for underground water supply, drainage, slurry spraying, gas extraction, and air pressure systems.
Polyethylene Raw Materials: The inner and outer polyethylene resin utilized in coal mines are crafted from flame-retardant and antistatic specially modified materials. These include carbon nanotube (CNT) modified materials and permanent coloring special materials developed with our independent intellectual property rights. Meeting the stringent standards of MT181 and MT558.1, these pipes boast enhanced mechanical properties.
Enhanced Steel Wire: Utilizing copper-plated steel wire that complies with GB/T14450 standards, our pipes feature a strength of 2050MPA, significantly surpassing the standard requirement of 1850MPA.
Adhesive Resin: Our patented adhesive resin, developed with proprietary technology, offers superior steel wire adhesion and exceptional compatibility with various processing conditions.
OD
dn/mm |
PN MPa |
| 0.8 |
1.0 |
1.25 |
1.6 |
2.0 |
2.5 |
3.5 |
| Nominal Wall Thickness / mm |
| 50 |
|
|
|
4.5 |
5.0 |
5.5 |
5.5 |
| 63 |
4.5 |
5.0 |
5.5 |
5.5 |
| 75 |
5.0 |
5.0 |
5.5 |
6.0 |
| 90 |
5.5 |
5.5 |
5.5 |
6.0 |
| 110 |
5.5 |
5.5 |
7.0 |
7.0 |
7.5 |
8.5 |
| 140 |
5.5 |
5.5 |
8.0 |
8.5 |
9.0 |
9.5 |
| 160 |
6.0 |
6.0 |
9.0 |
9.5 |
10.0 |
10.5 |
| 200 |
6.0 |
6.0 |
9.5 |
10.5 |
11.0 |
12.5 |
| 225 |
8.0 |
8.0 |
10.0 |
10.5 |
11.0 |
|
| 250 |
8.0 |
10.5 |
10.5 |
12.0 |
12.0 |
12.5 |
| 315 |
9.5 |
11.5 |
11.5 |
13.0 |
13.0 |
|
| 355 |
10.0 |
12.0 |
12.0 |
14.0 |
|
| 400 |
10.5 |
12.5 |
12.5 |
15.0 |
| 450 |
11.5 |
13.5 |
13.5 |
16.0 |
| 500 |
12.5 |
15.5 |
15.5 |
18.0 |
| 560 |
17.0 |
20.0 |
|
|
| 630 |
20.0 |
23.0 |
1. The pioneering enterprise in developing medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products, along with their innovative connection methods.
2. The trailblazing enterprise to introduce steel wire mesh skeleton polyethylene composite pipes specially designed for underground coal mines.
3. The industry leader in promoting wire mesh skeleton polyethylene composite pipes for the coal mining sector, setting new standards and advancing the entire industry.
4. The first enterprise to create wire mesh skeleton polyethylene composite pipe products capable of withstanding pressures above 3.5MPa.
5. The pioneering enterprise to develop the groundbreaking 'double sealing' and 'one-piece clamp' connection technology specifically for steel wire mesh skeleton polyethylene composite pipes used in underground coal mines.
Donghong has established a state-of-the-art high-pressure pipe fittings factory, dedicated to crafting a comprehensive range of superior high-pressure engineering fittings. Our capabilities extend to customizing unique fittings tailored to specific customer requirements, industrial needs, and mining conditions. This ensures the realization of our manufacturing philosophy: 'Perfect Connections Create Superior Systems.'
About
Us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856) is headquartered in the esteemed hometown of Confucius - Qufu, China. Established in 1997, Donghong has flourished into a prestigious manufacturer of engineering pipelines, a premier pipeline engineering service provider, and a top-tier general contractor of pipeline engineering. Our main business encompasses four major categories of functional and customized pipelines: rainwater and sewage drainage pipes, municipal pipelines, industrial and mining pipelines, and pipelines for national key projects. On November 6, 2017, Donghong proudly became the first engineering composite pipeline manufacturer listed on the main board in China, marking a significant milestone in our journey.
Donghong boasts an elite team of over 200 R&D personnel and holds more than 100 patents. Leveraging our national enterprise technology center, national CNAS laboratory, academician expert workstation, and postdoctoral workstation, we spearhead the advancement of digitalization, informatization, and intelligence in pipeline engineering. Our relentless pursuit of innovation positions us at the forefront of the engineering pipeline industry.
Donghong plays a pivotal role in national key strategic and livelihood projects. We lead the engineering pipeline industry, contributing to significant national initiatives such as the South-to-North Water Diversion, Hanjinwei, Beijing-Xinjiang Expressway, and the One Belt, One Road Initiative. Additionally, we are instrumental in standardized farmland projects, urban and rural water supply integration, Liren gas, centralized heating, and more, ensuring our solutions meet the critical needs of these monumental projects.
The experimental verification
The Key raw materials
Binder resin is the cornerstone of our High Strength HDPE Steel Mesh Pipe. It ensures the seamless transfer of stress during the pipe pressure process and is integral to the composite material of the pipe. The quality of the binder resin significantly impacts the overall product quality. At Shandong Donghong Pipe Industry Co., Ltd., we have developed a dedicated raw material design and development platform to enhance the binder resin. This platform ensures optimal compatibility between materials, processes, and equipment.
Plating serves a dual purpose of corrosion protection and enhancement of the shear strength between the steel wire and the bonding resin. Through extensive data testing and comparisons, we discovered that the average shear strength of tin bronze plating is 20.69MPa, whereas brass is at 11.42MPa, revealing significant differences in shear strength based on the type of plating. To maximize performance, we selected tin bronze-plated steel wire as the pressure-bearing substrate, offering superior shear strength and durability.
Key Industrial and Mining Application Showcases
Xinjiang Landmark Project: The Potassium Salt Process Pipeline at Lop Nur, Xinjiang
This national key investment project involves the salt chemical processes in the Lop Nur region of Xinjiang. The pipeline's annual conveying capacity, bending resistance, and interface stability requirements are extremely stringent. Donghong's technical team meticulously designed and developed non-standard customized product structures and interface solutions tailored to the project's specific conditions. Additionally, Donghong Pipeline Engineering Company took on the entire construction process, ensuring the pipeline operates seamlessly and efficiently.
Kazakhstan Wet Copper Refining Project
This project involves open-air transportation of highly corrosive copper sulfate media. Donghong's high-pressure, corrosion-resistant SRTP, along with the composite500 steel-plastic composite technology and the innovative seal-seal double-seal connection technology, offers a perfect solution for the corrosion-resistant transport of special media, addressing the challenge effectively.
"One Belt, One Road" Initiative: Indonesia OBI Nickel and Cobalt Project Deep Sea Landfill
Situated on Obi Island, North Maluku Province, Indonesia, this project was designed by U.S. Borealis (Beijing) Pipeline Technology Co., Ltd. for the deep-sea landfill (DSTP) system. After comparing economic investments and assessing operation and maintenance safety, the dn1000 * 1.6MPa steel wire mesh skeleton polyethylene composite pipe was ultimately selected. This choice demonstrates Donghong Wisdom's advanced solutions, with the project amounting to 66.484 million yuan.
We have been cooperating with many logistics companies for a long time, and have created a transportation mode combining various forms of "steam transportation + railroad transportation + port and shipping logistics" to provide customers with optimal transportation solutions.
Together with many years of transportation experience, no matter how hot or cold it is, no matter how remote the area is or how harsh the environment is, we have a comprehensive transportation plan to ensure that each batch of goods arrives at the site at the first time.
1. Is your product meets the international standard ?
Our products have pass CE, BV, ISO and wars certificate, and all figures indicates higher than standard, you can feel free to let us know which national standard you required, we will check or test it for you.
2. What kind of service do you offer ?
As a manufacture fatory, we provide pipe products, pipe fittings, package and shipping; as a professional consulation company we provide project consulting advise, pipe system solutions and design suggestions; as an engineering focused enterprise , we also provide pipeline contractor service and pipe repair service, also can give free maintance guidance.
3. Do you support OEM/ODM service?
Yes, we offer customization in material, specification, logo, package , connection methods andothers. Meanwhile, our professional team can offer solution suggestion for your specified projects, we have successfull cases of that service.
4. What's your terms of payment?
T/T or L/C at sight.
5. How can you gurantee the goods you offered is qualified?
We warmly welcome all customers arrange the visit to our company and see our goods in sight, we can also provide strict test as per customer required before order. Meanwhile, before the bulk production, we can dispatch samples for customer to do their own tests to qualify the products.
Welcome to Shandong Donghong Pipe Industry Co., Ltd.
Our products at Shandong Donghong Pipe Industry Co., Ltd. meet international standards such as CE, BV, ISO, and wars certificate, surpassing the required figures. We offer customization in material, specification, logo, package, and connection methods to meet any national standard you require.
We provide a range of services including pipe products, fittings, packaging, shipping, project consulting, pipe system solutions, design suggestions, pipeline contractor services, pipe repair, and maintenance guidance. Our professional team can offer tailored solutions for your projects.
We support OEM/ODM services, allowing customization in various aspects. Payment terms include T/T or L/C at sight. We guarantee the quality of our goods through on-site visits, strict testing, and providing samples for customer testing before bulk production.
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