supply of air compressor (screw type)air compressor (screw type),supply, installation and commissioning of air compressor (screw type) to the following specification, 1.en series tank mounted screw compressor with encapsulated design. 2. free air delivery: 54 to 65 cfm. 3. maximum working pressure: 12.7 kg/sq.cm. 4. normal working pressure: 12.5 kg/sq.cm approx. 5. tank capacity: 270 litres approx. 6. no. of stages: single. 7. cooling system: air-cooled. 8. motor power: 20 - 25 hp as per detailed technical specification attached. make: elgi or kirloskar or mark or colt or frank or chicago pneumatics or cec or parth only [ warranty period: 30 months after the date of delivery ]