1.PE pipe corrosion resistance characteristics?
Polyethylene is an inert material that can withstand the corrosion of various chemical media. No electrochemical corrosion, no anti-corrosion layer.
2. Non-leakage characteristics of PE tube?
Polyethylene pipe mainly adopts welding connection (hot fusion connection or electric fusion connection), which essentially ensures the identity of interface material, structure and pipe body, and realizes the integration of joint and pipe. The experiment proves that the tensile strength and blasting strength of the interface are higher than that of the pipe body, and there is no leakage problem compared with rubber joints or other mechanical joints.
3.PE pipe high toughness characteristics?
Polyethylene pipe is a kind of high toughness pipe, its elongation at break is generally more than 500%, the ability to adapt to the uneven settlement of pipe base is very strong. It is also a kind of pipe with excellent anti-seismic performance. In 1995 Kobe earthquake in Japan, polyethylene gas pipe and water supply pipe are the pipe system spared. Therefore, Japan after the earthquake vigorously promote the use of PE pipe in the gas field.
4.PE tube has excellent flexible characteristics?
The flexibility of polyethylene allows polyethylene pipes to be rewound and supplied in longer lengths without the need for a variety of joint fittings. For trenchless construction, the direction of the polyethylene pipe can be easily changed according to the requirements of the construction method, and the original size and dimension can be restored after the construction.
5. How to understand the characteristics of PE tube with good resistance to scratches?
Scratches cause stress concentration in the material, leading to the failure of the pipe. When trenchless technology is used, scratches are more difficult to avoid, whether new pipe is laid or old pipe is replaced. In recent years, it has been proved that PE80 grade polyethylene pipe has better resistance to slow crack growth and scratch resistance, and PE100 polyethylene pipe has better scratch resistance. Therefore, polyethylene pipe is widely used in trenchless technology construction.
6. PE pipe has the characteristics of good rapid crack transmission resistance.
The rapid cracking of pipeline is a kind of accidental accident. The crack increases rapidly at a certain speed, causing the rupture of tens of meters or even thousands of meters of pipeline instantly, and the resulting consequences are disastrous. As early as the 1950s, there were several rapid cracking accidents in the United States gas pipe. Rapid cracking of polyethylene gas pipe has not been found in practice. In recent years, a lot of research has been carried out on the rapid cracking of pipe in the world. The results show that the resistance of polyethylene pipe to crack propagation is among the best.
Post time: Feb-03-2023
