Sell Super Spiral Duct

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Description:1. MODEL S/T is a ventilation pipe made by galvanizing steel tape S/S is a ventilation pipe made by stainless steel S/T is a ventilation pipe made by aluminum 2. TYPE: super spiral duct Adopt multiple halftones and insulating materials for inner tube, and put a galvanized duct on the out of it, then it comes to. It is used to famous buildings, gymnasiums, airfields and etc. 3. TECHNICS Adopt spiral sound absorption Inner of solo tube and add the system of duct liner, then the super spiral duct comes to. Accessories: center coupling, reducer tube, mouth for aeration, 90' bend, S bend. Our company adopts computer technics that as long as let the technical date input computer and computer will let the information input to the automatic plasma cutting machine. Then cut material will pass different nip machine and welding machine to make it succeed. These accessories are easy for concert and good at tightness, of what tolerance is among 2mm.