Epoxy resin coated composite steel pipe, also known as mining coated composite steel pipe, is a pipeline material specifically designed for use in coal mines. It is made of seamless steel pipes or welded steel pipes as the base pipe, and coated with epoxy resin powder hot melt on the inner and outer walls of the steel pipes through spraying and adsorption processes. Epoxy resin coated composite steel pipes used underground in coal mines are usually black, orange, or green, and color codes can also be specified according to customer needs