Rolastar Pvt. Ltd manufactures Notched and Swaged Round Collar. Rolastar Pvt. Ltd. Is certified to SMACNA DW/143 standards for ultra -low air leakage and high structural rigidity. The Company is also nominated by BRY - AIR 2006 Awards for best Product design. The Company also manufactures factory-fabricated ducting. The Notched and Swaged Round Collar is applicable wherever flexible ducts are used in the ducting. The Notched and Swaged Round Collar is used to ensure air tight and fast connection.
