Over 20 years of R&D and manufacturing of perforated steel strip polyethylene composite pipes

1) Perforated Steel Strip Polyethylene Composite Pipe for Cold Water

The perforated steel strip polyethylene composite pipe is a composite pipe that uses a perforated pipe welded from cold-rolled steel strip as the reinforcing skeleton and is combined with thermoplastic plastic. The introduction of the reinforcing skeleton significantly enhances the pipe's heat resistance and strength. In terms of process, this product incorporates an adhesive layer between the steel strip and polyethylene, and uses argon protection during steel strip welding to prevent oxidation of the molten steel during high-temperature welding. This solves the issue of water leakage in composite pipes, making their performance even more superior.

1. It has higher rigidity and impact resistance than plastic pipes, with a low expansion coefficient and creep resistance similar to steel pipes.

2. Double-sided anti-corrosion, with the same anti-corrosion performance as plastic pipes, and is corrosion-resistant. Operating temperature is increased.

3. Low thermal conductivity.

4. Smooth inner wall, no scaling, with a head loss 30% lower than that of steel pipes.

5. Pipes are connected using electrofusion, a mature technology with a wide variety of fittings and specifications.

6. Lightweight, easy to transport and install.

7. By adjusting the thickness of the steel plate and plastic, pipes of different pressure grades can be manufactured, allowing easy modification of reinforcement parameters to produce pipes with various pressure resistance levels.

8. Using high-temperature-resistant plastics, such as heat-resistant PE-RT polyethylene, random copolymer polypropylene (PP-R), etc., enables the production of temperature and pressure-resistant pipes.

9. High overall reliability, with a service life of up to 50 years under normal conditions.

2、Perforated Steel Strip Heat-Resistant Polyethylene (PE-RT) Composite Pipe for Hot Fluids(Dongtai Pipe Industry)

This product is composed of a perforated pipe welded from cold-rolled punched steel strip as the reinforcing skeleton and heat-resistant polyethylene (PE-RT) as the main material. The introduction of the reinforcing skeleton and heat-resistant polyethylene (PE-RT) significantly improves the pipe's pressure resistance and heat resistance. This allows composite pipes originally suitable only for low-temperature (≤40°C) water supply to be used for hot water transportation, secondary heating pipelines, and industrial applications such as chemical and pharmaceutical industries for conveying high-temperature media.

3) Application Areas

1、Chemical Industry: Transporting corrosive gases, liquids, and solid powders in industries such as acid, alkali, and salt manufacturing, petroleum, fertilizers, pesticides, pharmaceuticals, chemicals, mining, rubber, and plastics.

2、Oil and Gas Fields: Gathering and transportation pipelines for oil-containing wastewater, gas field wastewater, oil-gas mixtures, and polymer solution reinjection in oil wells, as well as secondary and tertiary oil recovery and gathering pipelines.

3、Mining: Slurry, tailings, ventilation pipes, and engineering pipes.

4、Textile, Printing, and Paper Industries: Process and discharge pipelines for transporting corrosive media.

5、Municipal Engineering: Urban building water supply and drainage, drinking water, and hot water return transportation.

6、Non-Ferrous Metals: Transporting corrosive media in non-ferrous metal smelting.

7、Agriculture: Deep well pipes, filter pipes, drainage pipes, ballast water pipes, ventilation pipes, etc.

8、Seawater Transportation: Seawater desalination plants, coastal power plants, seawater transportation in port cities, submarine pipelines, and cable conduits.

9、Thermal Power Engineering: Process water return transportation and waste slag transportation.

10、Highways: Buried water supply and drainage pipes, cable conduits.