바람인텍(주)는 오늘보다 더 큰 내일의 가치를 추구합니다.


ZHAOHE’s spiral duct system is a quickly assembled system. The ductwork classification and air leakage limit of ZHAOHE’s spiral duct system is more than classic D according to <DW144>.The type of galvanized steel normally used for ductwork is DX51D and Z275.Seal moulding remains tight from 5000Pa negative to 3000 Pa positive pressure.Pre-insulated system uses glass wool as insulation which certified by GL and DNV.Pipe fittings are made by stamping, which ensured them beautiful appearance, low windage loss, good sealing effect.