Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP): Introducing our cutting-edge Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP), designed to set new standards in modern mining technology. Crafted with high-strength steel wire mesh, intricately helically twisted and molded on both sides, and fortified with modified flame-retardant and antistatic high-density polyethylene (HDPE), this pipe guarantees unmatched durability and performance. The high-performance adhesive resin impeccably binds the steel wire skeleton to the HDPE layers, merging the strength of steel with the adaptability of plastic. Perfect for underground water supply and drainage, slurry spraying, gas extraction, and air pressure applications, our composite pipes are meticulously engineered to meet the rigorous demands of the mining sector.
Polyethylene Raw Materials: In coal mining applications, our inner and outer polyethylene resin layers are made from flame-retardant and antistatic specially modified materials, including advanced carbon nanotube (CNT) enhanced substances and permanently colored special components. Developed under our exclusive intellectual property rights, these materials exceed MT181 and MT558.1 standards, significantly boosting the mechanical properties of our pipes. This ensures they withstand even the most challenging environments, offering superior performance.
Enhanced Steel Wire: Our composite pipes feature copper-plated steel wire that meets GB/T14450 standards, with an impressive strength of 2050 MPa, significantly outperforming the standard 1850 MPa requirements. This delivers exceptional durability and reliability in the toughest conditions, ensuring long-lasting and consistent performance.
Adhesive Resin: Our proprietary adhesive resin, developed with exclusive technology, provides unparalleled adhesion to steel wire and exceptional process adaptability. This innovative adhesive guarantees a robust bond, substantially enhancing the overall structural integrity of our composite pipes. As a result, they are an ideal and dependable choice for demanding industrial 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. Shandong Donghong Pipe Industry Co., Ltd. is the pioneering enterprise that developed medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products. These innovative pipes come with a groundbreaking connection method, setting new standards in the industry.
2. As a trailblazing enterprise, we were the first to introduce steel wire mesh skeleton polyethylene composite pipes specifically designed for underground coal mines, ensuring unmatched safety and reliability.
3. We are the first enterprise to champion the use of steel wire mesh skeleton polyethylene composite pipes in the coal mining sector, establishing a revolutionary new industry standard that enhances operational efficiency and safety.
4. Shandong Donghong Pipe Industry Co., Ltd. is proud to be the first to innovate wire mesh skeleton polyethylene composite pipe products that can withstand pressures above 3.5MPa, marking a significant technological advancement.
5. We are the pioneering enterprise that developed the 'double sealing' and 'one-piece clamp' connection technology, specifically tailored for steel wire mesh skeleton polyethylene composite pipes used in underground coal mines, ensuring superior performance and reliability.
The flanged connection with port sealing end faces is integral to the pipe, meticulously designed to address the demands of high-pressure piping applications.
Connection Features:
1) Enhanced automation and high continuous production efficiency;
2) Streamlined process flow, easy process control, and dependable quality;
3) Integrated sealing end face and tube body structure, eliminating secondary injection molding, and ensuring superior pressure-bearing capacity;
4) Extended fixed end face with a riveting structure to mitigate system risks.
Processing Capacity:
Accommodates dn50-dn315mm models, with a pressure level connection capacity ranging from 0.8MPa to 10.0MPa; dn355 and above models enhance the original double-seal structure.
Universal Black Standard Flange
Our engineered fitting solution provides improved hydraulic performance while using conventional PE jointing methods to maintain the pipe route, even in complex construction environments. Fabricated in-house from our own manufactured pipe range.
These fittings are constructed in a controlled environment at our ISO 9001:2015 and OHSAS 18001:2015 certified facilities.
The high-pressure clamp connection utilizes specialized pipe end molding equipment to form a 'pier edge' at the end of the steel wire pipe, creating a flange root-like structure. This structure enables the connection between the pipe bodies through a cast steel clamp.
Connection Characteristics:
1) The joint is derived directly from the tube body, ensuring high structural strength;
2) Mechanical connection is quick, easy, and does not require special equipment.
Processing Capacity:
3) Simple and efficient connection process with low technical requirements for personnel.
Processing Capacity:
Supports dn90-dn315mm models with a pressure level ranging from 1.6MPa to 3.5MPa.
Shandong Donghong Pipe Industry Co., Ltd. has established a cutting-edge high-pressure pipe fittings factory, dedicated to manufacturing a wide array of high-pressure engineering fittings. Additionally, we offer bespoke customization services to meet unique customer specifications and diverse industrial and mining conditions. Our manufacturing philosophy is centered on ensuring 'Good Connection for an Excellent System,' guaranteeing superior performance and reliability.
About
us
Donghong (Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856) proudly calls Qufu, the hometown of Confucius in China, its home. Established in 1997, Donghong stands as a premier manufacturer and service provider in the engineering pipeline sector. Our core 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. As a testament to our industry leadership, Donghong was listed on the main board of Shanghai on November 6, 2017, making history as China's first main board-listed engineering composite pipeline manufacturer.
At Donghong, innovation lies at our core. With a robust team of over 200 R&D personnel and an impressive portfolio of more than 100 patents, we harness the capabilities of national enterprise technology centers, CNAS laboratories, academician expert workstations, and postdoctoral workstations. This allows us to drive significant advancements in digitalization, informatization, and intelligence within the pipeline engineering realm. Our unwavering commitment to technological excellence firmly establishes us as trailblazers in the industry.
Dedicated to national strategic and livelihood projects, Donghong plays a pivotal role in major initiatives such as the South-to-North Water Diversion, Hanjinwei, Beijing-Xinjiang Expressway, and the One Belt, One Road initiative. Our expertise also extends to standardized farmland, urban and rural water supply integration, Liren gas projects, and centralized heating systems. This reinforces our leadership in engineering pipeline solutions, paving the way for a brighter, more sustainable future.
Experimental Verification
Key Raw Materials
The binder resin is the cornerstone of our Composite HDPE Pipe with Steel Mesh. It ensures seamless stress transfer during pipe pressure operations and is a vital component of our composite material. Our product's excellence is rooted in the superior performance of the binder resin. At Shandong Donghong Pipe Industry Co., Ltd., we pride ourselves on our cutting-edge raw material design and development platform, which has been meticulously crafted to enhance the binder resin's capabilities. This ensures perfect compatibility with our processes and equipment, resulting in a product of unparalleled quality.
Plating is essential for dual functions: providing robust corrosion protection and enhancing the shear strength between the steel wire and bonding resin. Extensive data testing and meticulous comparisons reveal that tin bronze achieves an impressive average shear strength of 20.69MPa, while brass registers at 11.42MPa. These differences in shear strength across various plating and bonding resins led us to select tin bronze-plated steel wire as our pressure-bearing substrate. This choice guarantees exceptional performance and reliability, setting our pipes as a benchmark in the industry.
Key Industrial and Mining Application Highlights
Xinjiang Key Project Construction: Process Pipeline for Potassium Salt in Lop Nur, Xinjiang
This pivotal national investment focuses on a salt chemical project in Xinjiang Lop Nur, featuring a highly demanding process pipeline. The annual conveying capacity, pipe bending resistance, and interface stability requirements are exceptionally rigorous. The expert technical team at Donghong meticulously designed and developed non-standard tailored product structures and interface solutions to meet these specific project conditions. Furthermore, Donghong Pipeline Engineering Company oversaw the entire construction process, ensuring optimal pipeline performance and operational efficiency.
Wet Copper Refining Project in Kazakhstan
This project required open-air transportation of highly corrosive copper sulfate media. Donghong's high-pressure corrosion-resistant SRTP, advanced composite500 steel-plastic technology, and innovative seal-seal double-seal connection technology provided an impeccable solution for the corrosion-resistant transport of these specialized media.
"One Belt, One Road"-Indonesia OBI Nickel and Cobalt Project Deep Sea Landfill Initiative
Situated on Obi Island in North Maluku Province, Indonesia, the deep-sea landfill (DSTP) system was chosen after a comprehensive analysis of economic investment, operational, and maintenance safety. The dn1000 * 1.6MPa steel wire mesh skeleton polyethylene composite pipe was ultimately selected, showcasing Donghong's innovation and expertise. The value of this project amounts to 66.484 million yuan.
Donghong has forged strategic alliances with over five top-tier 5A-level logistics companies. With extensive and unmatched expertise in transportation, we cover all forms of logistics, including automobile, railway, port, and shipping. Regardless of extreme heat, severe cold, or the most remote and challenging destinations, we deliver unparalleled service. Our strong and all-encompassing transportation strategy ensures prompt delivery of every shipment straight to your site, keeping your projects on track and your operations seamless.
1. Does your product meet international standards?
Our products proudly bear CE, BV, ISO, and WRAS certifications, showcasing performance that surpasses standard requirements. Should you have a specific national standard in mind, we can easily confirm or test it to ensure compliance.
2. What kind of services do you offer?
As a premier manufacturing factory, we offer an extensive range of pipe products, fittings, packaging, and shipping services. Our expertise as a consulting company encompasses project consulting, pipe system solutions, and design recommendations. Additionally, our engineering-focused approach includes pipeline contracting, repair services, and complimentary maintenance guidance.
3. Do you support OEM/ODM services?
Absolutely, we provide a vast array of customization options including material, specifications, logo, packaging, and connection methods. Our expert team is dedicated to crafting tailored solution suggestions for your specific projects, with a proven track record of numerous successful implementations.
4. What are your terms of payment?
We accept T/T or L/C at sight for your convenience.
5. How can you guarantee the quality of the goods you offer?
We cordially invite all customers to visit our facilities and inspect our products firsthand. Additionally, we conduct rigorous tests according to customer requirements before finalizing orders. Samples are provided prior to bulk production, allowing customers to perform their own quality assessments.
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