Rolastar Pvt. Ltd manufactures Fully Galvanized Carriage Bolt. 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 Fully Galvanized Carriage Bolt is provided with square neck to fit in the square hole of corners. The Fully Galvanized Carriage Bolt is provided with flanged nut to eliminate washer. This Carriage Bolt is available in three different sizes of M8, M10, M12.
