Audited Supplier
Enhanced steel wire:using copper-plated steel wire conforming to GB/T14450 requirements,the strength of 2050MPA,far exceeding the standard 1850MPA requirements.
Adhesive resin:the patenred product using the company's independent intellectual property rights,has the advantages of strong steel wire sdhesion and strong process adaptability.
| 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 "first" enterprise to develop a medium and high-pressure steel wire mesh skeleton polyethylene composite pipe products supporting the connection method
2.The "first" enterprise to develop the steel wire mesh skeleton polyethylene composite pipe for underground coal mines
3.The "first" enterprise that promoted the wire mesh skeleton polyethylene composite pipe for underground coal mine to the coal mine field and created the enterprise that created the industry.
4.The first enterprise to develop wire mesh skeleton polyethylene composite pipe products above 3.5MPa.
5.The first enterprise to develop the 'double sealing' and 'one-piece clamp' connection technology for steel wire mesh skeleton polyethylene composite pipes used in underground coal mines.
About us
Donghong(Shandong Donghong Pipe Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856) is headquartered in the hometown of Confucius - Qufu, China. (Shandong Donghong Pipeline Industry Co., Ltd.) (abbreviation: Donghong, stock code: 603856), headquartered in the hometown of Confucius - Qufu, China, was founded in 1997, is a manufacturer of engineering pipeline, pipeline engineering service provider and general contractor of pipeline engineering, with the four major categories of functional and customized pipelines, namely, rainwater and sewage drainage pipe, municipal pipeline, industrial and mining pipeline, and pipeline for the national key projects as its main business. pipeline engineering general contractor.On November 6, 2017, it was listed on the main board of Shanghai, and is the first main board listed engineering composite pipeline manufacturer in China.
Donghong has more than 200 R&D personnel and more than 100 patents. Relying on the national enterprise technology center, national CNAS laboratory, academician expert workstation, postdoctoral workstation and other national technology research and development platforms, Donghong deepens the research on digitalization, informatization and intelligence of pipeline engineering and leads the development of engineering pipeline industry.
The company has been engaged in national key strategic projects and livelihood projects. Leading the development of engineering pipeline industry, it serves the national key strategic projects and livelihood projects such as South-to-North Water Diversion, Hanjinwei, Beijing-Xinjiang Expressway, One Belt, One Road, standardized farmland, integration of urban and rural water supply, Liren gas, centralized heating, and so on.
The experimental verification
The Key raw materials
Binder resin is the key to this product, is the smooth realization of the pipe pressure process stress transfer, pipe composite key materials, the performance of the binder resin largely determines the level of quality of the product, our company has a targeted raw material design and development platform to improve the binder resin and process, equipment matching targeted.
Plating can play a role in corrosion protection, and at the same time play a role in enhancing the shear strength of steel wire and bonding resin, through data testing and comparison found that the average value of shear strength of tin bronze is 20.69MPa, brass is 11.42MPa, there are large differences in the shear strength of steel wire with different plating and bonding resin, so we chose to use tin bronze plated steel wire as a pressure-bearing substrate.
The project is a national key investment in salt chemical projects in Xinjiang Lop Nur process pipeline, the annual conveying capacity of the pipeline, pipe bending resistance, the stability of the interface requirements are extremely stringent, Donghong technical team targeted around the characteristics of the project conditions design and development of non-standard customized product structure and interface program, while Donghong Pipeline Engineering Company is responsible for the whole process of construction, to ensure that the pipeline operates effectively.
Need to open-air transportation of highly corrosive copper sulfate media, Donghong high pressure corrosion-resistant srtp, composite500 steel-plastic composite technology and seal-seal double-seal connection technology, a perfect solution to the corrosion-resistant transport of special media under the problem.
The project is located in Obi Island, North Maluku Province, Indonesia, by the U.S. Borealis (Beijing) Pipeline Technology Co., Ltd. to undertake the design task of the deep-sea landfill (DSTP) system, through the economic investment comparison, operation and maintenance safety assessment, and ultimately selected the dn1000 * 1.6MPa steel wire mesh skeleton polyethylene composite pipe to provide Donghong Wisdom for the project, the amount of the project is 66.484 million yuan.
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.
