The history of pipe’s development
Throughout the history of pipeline development in the world for hundreds of years, the pipeline has undergone tremendous changes in terms of material, function and application with the rapid development of economy and the improvement of per capital living standards.
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Throughout the history of pipeline development in the world for hundreds of years, the pipeline has undergone tremendous changes in terms of material, function and application with the rapid development of economy and the improvement of per capital living standards.
First generation: galvanized steel pipe
It is one of the earliest pipeline which apply to daliy life. It is very popular because of its low price.However, it is easy to rust to block pipeline and cause secondary heavy pollution to drinking water, which is serious harm to people's health. On June 1, 2001, the Ministry of Construction, the Bureau of Quality supervision and other departments have issued a document banning the use of new urban housing.
Second generation: PVC-U water supply pipe
It is one of the earliest pipes used to replace galvanized steel pipe. It is made of two layers of plastic sandwice with a layer of aluminum strip. It has the advantages of good flame retardancy and low price. But because the adhesive is used to bond, the connection reliability is poor, the pressure is small, and it also contains chlorine, which affects the water quality and poor health and safety. So it has withdrawn from the building materials market of developed cities along the east China coast.
Third generation: aluminum composite pipe
Aluminum composite pipes have good health performance which is different from above two type pipes, composed of two layers of plastic inside and outside layer of aluminum strip, because of its better composition structure, the pressure resistance performance is also greatly improved, the maximum pressure resistance of a single pipe can reach 2.0MPa, its temperature can reach 60-90℃.
However, because the aluminum-plastic composite pipe can not be connected by hot melt, it can only be connected by clamping metal joint, which not only increases the cost, but also greatly reduces the reliability of the connection. The leakage of the aluminum-plastic composite pipe is found in the joints. At present, the aluminum-plastic composite pipe has basically withdrawn from the building materials market of the more developed cities along the coast of East China.
Fourth generation: PP-R water supply pipe
It is a new generation of eco-friendly pipeline products produced by introducing foreign technology and raw materials in the mid-1990s. It is non-toxic and tasteless, heat-resistant and pressure-resistant, corrosion-resistant, small flow resistance, good thermal insulation performance, and can be connected with the body material hot melt, greatly improving the reliability of the connection. Widely used in building water supply and drainage, urban and rural water supply and drainage, urban gas, power and optical cable sheath, industrial fluid transport and agricultural irrigation and other construction, municipal, industrial and agricultural fields. In terms of comprehensive performance, PPR pipe is the pipe with higher cost performance, so it becomes the preferred material for the renovation of home decoration water pipes
The fifth generation: copper pipe
It is one of the water supply pipelines selected by developed countries today. It has the advantages of small flow resistance, heat resistance, freezing resistance, pressure resistance, long service life and other advantage, but the cost of copper pipe is high, the welding skill is high, and the expansion force of copper is very large, so it is necessary to set up special expansion force elimination device. At present, it is widely used in middle and high grade hotels, hospitals, administrative buildings, senior apartments, villas and commercial and residential buildings in coastal developed areas.
Sixth generation: stainless steel pipe
Stainless steel is recognized as a healthy material that can be implanted into the human body. It has been successfully used for many years in developed countries to make water pipes made of stainless steel. Especially because the thin-wall stainless steel pipe is safe and reliable, healthy and environmental protection, high strength, economic and applicable, shockproof and other characteristics, gradually become the new choice of water supply pipe, and has become the current world trend.
There is no end to the road of pipeline development, Longain Pipe’s pursuit has no end, we believe that in the future to improve the quality of transport water supply to improve public drinking water safety and health, We will make efforts to lead the pipe industry, unstoppable!
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