Product Overview Huashida’s high-efficiency extrusion line is engineered to produce black HDPE outer jackets for PU foam pre-insulated pipes. Boasting fast production speed, low energy consumption, compact layout and easy operation, it is equipped with an automatic control system for steady and long-lasting operation. Production Line Composition 1 set — Vacuum loader 1 set — Hopper dryer 1 set — High-efficiency single screw extruder 1 set — Vacuum calibration table 1 set —