What is the difference between C channel and U channel?
Steel channel has been classified into "C" and "U" types depending on its outlook. Hence there are two standards to show the channel dimensions - UPE & UPN. UPE is for the C channel steel with parallel flanges while UPN for the U channel steel with tapered flanges.
Channels are secondary steel framing members most commonly used as receiver channel for zee channel on metal buildings. Welded together, they can be used as columns, braces, and ties. The shape of Channels does not allow end lapping – they are butted together.
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