Embedded Sleeve for Railway Sleepers The embedded sleeve is a section of plastic tubing pre-set into the spike-fixing hole of a railway sleeper, offering high mechanical strength, heat resistance, wear resistance and rigidity. It features simple, convenient installation and a long service life, and enhances the durability, electrical insulation, environmental performance and overall technical-economic performance of the sleeper, thereby meeting the demands of rapidly developing railway systems. Our company specializes in the manufacture and supply of railway embedded sleeves, mainly in Nylon PA6, Nylon PA66 and HDPE. We are able to meet customers' varied requirements regarding dimensions, waterproofing and other performance specifications. - @jacqueslees