卷料-上料-調平壓筋，剪板-與相應轆骨機配合或等離子切割機配合，沖剪方口，剪板、與聯合角咬口自成法蘭咬口，與TDF折邊機聯合使用生產"U","□","L"型風管，剪板，折邊，與合縫機配合可生產承插式法蘭風管。
Coil-feeding-leveling ribs, shearing plate-cooperating with the corresponding humeral machine or plasma cutting machine, punching and cutting square mouth, shearing plate, joint corner bite, self-forming flange bite, and TDF hem The machine uses the production of "U", "□", "L" type air duct, shearing plate, hemming, and the jointing machine can produce socket type flange duct.
