Application of Aluminum Alloy Lined Plastic (PE) Composite Pipe in Gas Pipeline System:
(Jiangsu Runshuo Pipeline Technology Co., Ltd.)
(PE) Aluminum alloy pipes, these new types of pipes will become the backbone of gas yard pipes:
Aluminum alloy lined plastic (PE) composite pipe: Advantages: leak-proof, corrosion resistance inside and outside, settlement prevention, lightning protection, aging resistance, easy installation, long service life, low comprehensive cost, high cost performance ratio. Disadvantages: high initial procurement cost.
1. Development Status of Aluminum Alloy Lined Plastic (PE) Composite Pipe
(1) Foreign development and application status
The characteristics of the gas terminal system for building gas now lie in the selection of new types of pipes. It allows the layout of the gas terminal system in buildings to be more flexible and versatile than galvanized pipe systems.
Among them, aluminum alloy lined plastic (PE) pipes for gas are currently widely used representatives. It is a new type of composite material pipe.
Its resistance to internal and external pressure, low brittleness, linear expansion rate, density, oxygen permeability, and other aspects exhibit the excellent performance of metal pipes. It also has the performance of special plastic pipes such as corrosion resistance, long service life, and low flow resistance.
Therefore, aluminum alloy lined plastic (PE) pipes for gas have become the ideal choice for various modified plastic pipes, galvanized pipes, and alternatives for civil gas transportation in foreign countries.
(2) Domestic development and application status
In general, domestic applications are still in a transitional period. Traditional gas supply systems for building terminals still exist in large numbers and account for a considerable proportion in new building installations. However, with the improvement of people's living standards, the contradictions between traditional systems and modern life requirements and modern enterprise management are beginning to emerge and are increasingly receiving attention.
Above all, aluminum alloy lined plastic (PE) pipes are a trend material for modern building gas pipeline systems, replacing galvanized pipes.
2. General Structure of Aluminum Alloy Lined Plastic (PE) Composite Pipe
Aluminum alloy lined plastic (PE) composite pipes usually adopt a three-layer structure: PE layer, aluminum alloy layer, oxide film layer.