... a high production.The extruded pipes are used for water purification. Service and Advantages:1. Over 10-year ... Core Pipe Extrusion Mould,etc.3. Extrusion moulds for water/gas supply pipe, sewage pipe, postal-communication pipe, agricultural irregation ... Core Pipe Extrusion Mould,etc.3. Extrusion moulds for water/gas supply pipe, sewage pipe, postal-communication pipe, agricultural irregation ...