煤矿井下用涂塑钢管,生产工艺及涂料不同,其产品质量和价格也不同,使用寿命也有较大差别。通过介绍几种涂塑钢管的生产工艺和涂料,指出幕帘散布法生产工艺内外涂改性LLDPE塑膜质量可靠,使用寿命长达60 a,性价比高。 Coal mine plastic pipe coated with different production processes and coatings, the quality of their products and prices are different, the service life is also quite different. By introducing the production technology and coating of several kinds of coated steel pipe, it is pointed out that the quality of the LLDPE plastic film coated inside and outside the curtain is reliable and the service life is up to 60 a, the cost performance is high.