DUCT MEANS FOR AN AIR FLOW OR A GAS FLOW AND A METHOD FOR MANUFACTURING, HANDLING AND MOUNTING SAID DUCT MEANS

摘要

The present invention relates to a duct means (1) for an air flow or for a gas flow and a method for manufacturing, handling and mounting said duct means (1). The invention will replace ducts of steel and thus having enough restraint towards flexure to be hung without any substantial flexure in connection to a mounting procedure. The advantages are, besides of an essential reduction in price per meter installed duct, that it makes manufacturing, handling and mounting easier as well as transportation and storing as the duct (1) can be folded or rolled in a flattened and space saving condition. The duct (1) can be bent in a mounted position, i.e. be allowed to be changed in direction having a minimum radius of about 1000 mm.