Steel Wire Mesh Skeleton Polyethylene Composite Pipe (SRTP/SRCP): Dive into the forefront of contemporary mining technology with our groundbreaking SRTP/SRCP pipes. Reinforced by high-strength steel wire mesh, meticulously helically twisted and seamlessly molded on both sides, and elevated with modified flame-retardant and antistatic high-density polyethylene (HDPE), this product delivers unmatched endurance and superior performance. The high-performance adhesive resin effortlessly fuses the steel wire skeleton to the inner and outer layers of HDPE, blending 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 designed to meet the exacting needs of the mining industry.
Polyethylene Raw Materials: In the domain of coal mining, the inner and outer polyethylene resin layers are meticulously crafted from specially modified flame-retardant and antistatic materials, including cutting-edge carbon nanotube (CNT) modified substances and permanently colored special materials. Developed leveraging our unique intellectual property rights, these materials not only adhere to MT181 and MT558.1 standards but also markedly enhance the mechanical properties of our pipes, ensuring their resilience in the most demanding conditions.
Enhanced Steel Wire: Our pipes feature copper-plated steel wire that aligns with GB/T14450 specifications, exhibiting an astonishing strength of 2050 MPa, significantly exceeding the standard 1850 MPa requirements. This guarantees exceptional durability and reliability in the toughest environments, ensuring enduring performance.
Adhesive Resin: Our patented adhesive resin, developed through proprietary technology, provides extraordinary adhesion to steel wire and unmatched process adaptability. This pioneering innovation ensures a secure bond and greatly enhances the overall structural integrity of our composite pipes, making them a dependable choice for stringent 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. The pioneering enterprise to develop medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products, complete with an innovative connection method.
2. The trailblazing enterprise to introduce the first-ever steel wire mesh skeleton polyethylene composite pipe specifically engineered for underground coal mines, providing unparalleled safety and durability.
3. The foremost enterprise to set new industry standards in the coal mining sector with the revolutionary wire mesh skeleton polyethylene composite pipes, ensuring enhanced operational efficiency and safety.
4. The first enterprise to innovate resilient wire mesh skeleton polyethylene composite pipe products capable of withstanding pressures above 3.5MPa, offering unmatched strength and reliability.
5. The pioneering enterprise to develop cutting-edge 'double sealing' and 'one-piece clamp' connection technology, meticulously tailored for steel wire mesh skeleton polyethylene composite pipes in underground coal mines, ensuring seamless and secure connectivity.
Our flanged connection with port sealing end faces is a marvel of engineering, expertly crafted to cater to the rigorous demands of high-pressure piping applications.
Connection Features:
1) Offers superior automation and exceptional continuous production efficiency;
2) Ensures a streamlined process flow, simplified process control, and consistent high-quality output;
3) Features an integrated sealing end face and tube body structure, eliminating secondary injection molding, and guaranteeing enhanced pressure-bearing capacity;
4) Boasts an extended fixed end face with a riveting structure to significantly reduce system risks.
Processing Capacity:
Caters to dn50-dn315mm models, with a pressure level connection capacity spanning from 0.8MPa to 10.0MPa; dn355 and above models enhance the original double-seal structure.
Universal Black Standard Flange
Our state-of-the-art engineered fitting solution enhances hydraulic performance while employing conventional PE jointing methods to maintain pipe routes, even in complex construction environments. They are meticulously fabricated in-house using our own manufactured pipe range.
These fittings are produced in a controlled environment, adhering to the stringent standards of ISO 9001:2015 and OHSAS 18001:2015 certifications.
The high-pressure clamp connection leverages 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 innovative design facilitates the connection between pipe bodies through a cast steel clamp.
Connection Characteristics:
1) The joint is seamlessly integrated from the tube body, ensuring robust structural strength;
2) Mechanical connection is swift, straightforward, and requires no special equipment.
Processing Capacity:
3) Features a simple and efficient connection process with minimal 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 pioneered a state-of-the-art high-pressure pipe fittings factory, dedicated to producing an extensive range of high-pressure engineering fittings. Additionally, we provide bespoke customization services to meet specific customer requirements and diverse industrial and mining conditions. Our manufacturing philosophy, 'Good Connection for an Excellent System,' ensures unparalleled 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.
Comprehensive Experimental Verification
Premium Key Raw Materials
The binder resin stands as the cornerstone of our Composite HDPE Pipe with Steel Mesh, ensuring seamless stress transfer during the pipe pressure process. As an indispensable composite material, the binder resin's exceptional performance is a testament to our product's excellence. At Shandong Donghong Pipe Industry Co., Ltd., we pride ourselves on an advanced raw material design and development platform, meticulously tailored to enhance the binder resin's properties. This precision guarantees impeccable compatibility with our processes and equipment, producing a product that epitomizes superior quality.
Plating serves a dual purpose: delivering robust corrosion protection and significantly enhancing the shear strength between the steel wire and bonding resin. Through extensive data analysis and rigorous comparisons, it was found that tin bronze achieves an impressive average shear strength of 20.69MPa, while brass registers at 11.42MPa. These variations in shear strength across different plating and bonding resins led us to select tin bronze-plated steel wire as our pressure-bearing substrate. This choice ensures exceptional performance and reliability, establishing 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 critically demanding salt chemical project in Xinjiang Lop Nur, featuring a highly specialized process pipeline. The project mandates exceptional annual conveying capacity, superior pipe bending resistance, and outstanding interface stability. The elite technical team at Donghong Pipe Industry Co., Ltd. meticulously engineered and developed bespoke product structures and interface solutions tailored to these stringent project conditions. Additionally, Donghong Pipeline Engineering Company ensured the highest standards of pipeline performance and operational efficiency by overseeing the entire construction process from start to finish.
Wet Copper Refining Project in Kazakhstan
This project required the open-air transportation of highly corrosive copper sulfate media. Donghong Pipe Industry Co., Ltd.'s high-pressure, corrosion-resistant SRTP pipes, combined with their cutting-edge composite500 steel-plastic technology and innovative double-seal connection technology, provided an exceptional solution for the safe and reliable transport of these specialized substances.
"One Belt, One Road"- Indonesia OBI Nickel and Cobalt Project Deep Sea Landfill Initiative
Located on Obi Island in North Maluku Province, Indonesia, the deep-sea landfill (DSTP) system was selected after a thorough analysis of economic investment and operational and maintenance safety. The project utilizes Donghong Pipe Industry Co., Ltd.'s dn1000 * 1.6MPa steel wire mesh skeleton polyethylene composite pipe, demonstrating their unparalleled innovation and expertise. This prestigious project is valued at 66.484 million yuan, underscoring Donghong's commitment to excellence.
Donghong has established strategic partnerships with over five elite 5A-level logistics companies. With a wealth of unparalleled transportation experience, our services encompass automobile, railway, port, and shipping logistics. Whether navigating extreme heat or bitter cold, or delivering to the most remote and challenging locations, we promise unparalleled service. Our robust and comprehensive transportation strategy ensures the prompt, reliable delivery of every shipment directly to your site, safeguarding your timelines and peace of mind.
1. Does your product meet international standards?
Our products proudly carry CE, BV, ISO, and WRAS certifications, ensuring they surpass global performance metrics. Share your specific national standard with us, and we will be delighted to verify or conduct tests to confirm compliance.
2. What range of services do you offer?
As a leading manufacturing factory, we deliver an extensive array of pipe products, fittings, packaging, and shipping services. As a professional consulting firm, we provide expert project consulting, comprehensive pipe system solutions, and design advice. Additionally, our engineering prowess enables us to offer pipeline contracting, repair services, and complimentary maintenance guidance.
3. Do you provide OEM/ODM services?
Absolutely, our OEM/ODM services cater to a vast array of customization needs including material selection, specifications, logo design, packaging, and connection methods. Our dedicated team offers bespoke solution suggestions tailored to your unique projects, backed by a multitude of successful case studies.
4. What are your terms of payment?
We accept payments via T/T or L/C at sight.
5. How do you ensure the quality of the products you offer?
We warmly invite customers to visit our facilities and inspect our products firsthand. Furthermore, we can perform rigorous tests as per customer specifications prior to order confirmation. We also offer samples before bulk production, allowing customers to conduct their own quality assessments.
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