Polyethylene pipes for underground coal mines

Polyethylene (HDPE) pipes for underground coal mines
HDPE pipes for coal mines are a new environmentally friendly product produced by Shandong Baoshan Plastic Industry Co., Ltd. to solve the problems of short service life and anti-corrosion treatment of underground metal pipelines. It is a key promotion project for national level new products and national level scientific and technological achievements, and its market launch and application are a major innovation in the international mining industry. It has good physical properties and many advantages that ordinary metal pipes and plastic pipes cannot match, and is widely used in coal mine water supply and drainage, gas drainage, ventilation and other pipeline systems. Its characteristics are as follows:
■ Flame retardant and anti-static
The anti-static and flame-retardant components of polyethylene pipes used in coal mines are evenly distributed in the pipe body, so the anti-static and flame-retardant performance indicators will not be affected by long-term use. The anti-static and flame retardant properties meet national standards and are suitable for specific locations underground that are flammable and explosive.
■ Lightweight and easy to install
Polyethylene pipes used underground in coal mines have a low density, with a weight unit of only 1/8 of steel pipes and 1/3 of fiberglass pipes. Therefore, the transportation and installation of polyethylene pipes used underground in coal mines are convenient and can greatly reduce the labor intensity of workers and improve work efficiency.
■ Good aging resistance and fast cracking resistance
Polyethylene pipes used underground in coal mines have good aging resistance, are not easy to embrittle, and have good toughness and absorb impact energy. Its fracture elongation exceeds 300% and it has good resistance to rapid opening.
■ Corrosion resistant, non scaling
Polyethylene pipes used in coal mines have strong corrosion resistance and non scaling properties, making them particularly suitable for transporting high sulfur water and water containing calcium and magnesium ions underground. Save the cost of anti-corrosion and descaling, and have a much longer service life than steel pipes, with a comprehensive economic benefit 6-8 times that of steel pipes.
■ Self lubrication
The inner wall of polyethylene pipes used in coal mines is smooth. The equivalent absolute roughness is 2/5 of that of steel pipes, with low conveying resistance. Under the same conditions, the conveying capacity can be increased by 30%.