Duct Hanging Slotted C Channel roll former Machine - Thickness 1.2-1.8mm Metal Framing Channel with a silver-galvanized finish and a half-slot construction, the channel can also be used to create a trapeze for conduit and mechanical piping and to support duct and cable trays. If you are interesting in this C channel machine, Pls feel free to contact with us, jv@jack-aiva.com / whatsapp +86 13915206868