Sai machine tools, has introducedindigenous twin screw extruder series for rigid pvc pipes. Its r&d department has developed three models: smt 6518, smt2218 and smt9018 in this series. Features: totally indigenous; technical guidance with process experts; suitable for 63 mm to 200 mm pipe size; maximum output 200 kg/hr; very economic price and higher output; fully synchronize operation with all protection; ac frequency variable drive, latest and advanced for power saving; easy in operation and low maintenance; and low compounding cost and high profitability.