Profile: Betech, Inc. produces spiral duct manufacturing systems. Our product line includes ovaler, spiraler, forming heads, ovalroller, flanger and fitter. Our flat oval duct moves air more efficiently than rectangular duct. Our fitter joins segment blanks into airtight segment elbows, reducers and endcaps from 5 inches to 50 inches. Our flanger offers round and flat oval flanges. Our spiraler is an automated system for producing rigid spiral metal pipes.