The Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP) is an innovative mining solution. Reinforced by a high-strength steel wire mesh skeleton, helically twisted and molded for superior durability, it features a core of modified flame-retardant and antistatic high-density polyethylene (HDPE). High-performance adhesive resin bonds the steel wire skeleton seamlessly with the inner and outer HDPE layers, merging the strengths of both steel and plastic pipes. This versatile pipe excels in various underground applications such as water supply, drainage, slurry spraying, gas extraction, and air pressure management.
Polyethylene Raw Materials: The inner and outer polyethylene resin used in coal mining applications employs specially modified, flame-retardant, antistatic materials. These include carbon nanotube (CNT) modified materials and permanently colored special materials, all developed by our company with proprietary technology. This ensures the pipes meet MT181 and MT558.1 standards while enhancing the mechanical properties of the material.
Enhanced Steel Wire: We use copper-plated steel wire that meets GB/T14450 requirements and boasts a strength of 2050MPA, significantly surpassing the standard requirement of 1850MPA.
Adhesive Resin: Our patented adhesive resin, developed with our exclusive intellectual property, ensures exceptional steel wire adhesion and robust process adaptability, making it a top choice for high-performance applications.
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 to develop medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products with an innovative connection method.
2. The trailblazing enterprise to create steel wire mesh skeleton polyethylene composite pipe specifically designed for underground coal mines.
3. The pioneering enterprise that introduced wire mesh skeleton polyethylene composite pipes into the coal mining industry, setting a new industry standard.
4. The first enterprise to develop wire mesh skeleton polyethylene composite pipe products that withstand pressures above 3.5MPa.
5. The leading enterprise to develop 'double sealing' and 'one-piece clamp' connection technologies 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 an extensive range of high-pressure engineering fittings. Additionally, we offer bespoke customization services, tailoring special fittings precisely to meet our clients' unique requirements and specific industrial or mining conditions. Embracing our manufacturing philosophy, we ensure that a 'good connection leads to an exceptional system', delivering unparalleled quality and reliability.
About
us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856) is an esteemed enterprise headquartered in the illustrious hometown of Confucius - Qufu, China. Founded in 1997, Donghong stands as a premier manufacturer, service provider, and general contractor in the engineering pipeline sector. Specializing in four major pipeline categories - rainwater and sewage drainage, municipal, industrial and mining, and national key project pipelines - Donghong offers functional and customized solutions. Marking a significant milestone, on November 6, 2017, Donghong became the first engineering composite pipeline manufacturer in China to be listed on the main board of Shanghai.
With a robust team of over 200 R&D personnel and a portfolio of more than 100 patents, Donghong is at the forefront of innovation. Leveraging national platforms such as the enterprise technology center, CNAS laboratory, academician expert workstation, and postdoctoral workstation, Donghong spearheads advancements in the digitalization, informatization, and intelligence of pipeline engineering, setting new benchmarks in the industry.
Donghong is a pivotal player in national key strategic and livelihood projects. The company's expertise serves critical 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. Donghong's leadership in the engineering pipeline industry makes it an indispensable partner in these transformative projects, driving progress and enhancing community well-being.
Thorough Experimental Verification
Premium Key Raw Materials
Binder resin is pivotal to our product, facilitating seamless stress transfer during the pipe pressure process. As a core component of pipe composites, its performance substantially dictates the overall product quality. Our company boasts an advanced raw material design and development platform, meticulously tailored to enhance the binder resin's properties and ensure optimal compatibility with our processes and equipment.
Plating serves a dual purpose: it provides robust corrosion protection and significantly boosts the shear strength between steel wire and bonding resin. Our detailed data testing reveals that tin bronze has an average shear strength of 20.69MPa, compared to brass's 11.42MPa. This notable disparity in shear strength among various plating options led us to select tin bronze-plated steel wire as the ideal pressure-bearing substrate, ensuring superior performance.
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 industry, focusing on the process pipeline in Lop Nur, Xinjiang. The pipeline's stringent requirements for annual conveying capacity, pipe bending resistance, and interface stability necessitated a tailored approach. Donghong's technical team meticulously designed and developed a non-standard, customized product structure and interface solution. Moreover, Donghong Pipeline Engineering Company oversaw the entire construction process, ensuring the pipeline's effective and efficient operation.
Wet Copper Refining Project in Kazakhstan
This project required the open-air transportation of highly corrosive copper sulfate media. Donghong's high-pressure corrosion-resistant SRTP, coupled with the innovative composite500 steel-plastic technology and seal-seal double-seal connection technology, offered a perfect solution for the corrosion-resistant transportation of these special 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., tasked with designing the deep-sea landfill (DSTP) system. After an exhaustive economic investment comparison and safety assessment for operation and maintenance, the DN1000 * 1.6MPa steel wire mesh skeleton polyethylene composite pipe was chosen. Valued at 66.484 million yuan, this project showcases Donghong's advanced solutions and contributions.
Our collaboration with leading logistics companies over the years has enabled us to develop a sophisticated, multi-modal transportation network. By integrating 'steam transportation,' 'railroad transportation,' and 'port and shipping logistics,' we ensure the most efficient and cost-effective transport solutions for our customers.
Leveraging extensive transportation experience, we guarantee that our goods reach their destinations promptly, regardless of extreme temperatures, remote locations, or harsh environments. Our detailed, comprehensive transportation plans ensure timely delivery of every shipment.
1. Does your product meet international standards?
Our products have passed CE, BV, ISO, and WARS certification, with performance metrics surpassing standard requirements. Feel free to specify any national standard you need; we will verify or test it for you.
2. What services do you offer?
As a manufacturing factory, we provide pipe products, pipe fittings, packaging, and shipping. As a professional consultation company, we offer project consulting advice, pipe system solutions, and design recommendations. As an engineering-focused enterprise, we also provide pipeline contracting and repair services, along with free maintenance guidance.
3. Do you support OEM/ODM services?
Yes, we offer customization in material, specifications, logos, packaging, connection methods, and more. Our professional team can provide tailored solutions for your specific projects; we have numerous successful cases to showcase our expertise.
4. What are your terms of payment?
We accept T/T or L/C at sight.
5. How can you guarantee the quality of your products?
We warmly welcome all customers to visit our company and inspect our goods firsthand. We can also conduct stringent tests as per customer requirements before orders. Additionally, we can dispatch samples for customers to conduct their own tests to ensure product quality before bulk production.
){kind=link}