tdc corner
1.Atransverse flanging system used to fix one length of duct to the adjacent length of duct. 2.A uct flange, or duct frame, is used in the air conditioning and ventilation industry to bolt lengths of ducting to each other. 3.Material galvanized steel or stainless steel 4.Flange s
Jiashan Beiouli Hardware Stamping Factory [2018-01-27 09:56:06 ]
