What's the width of the 22 channel wing?
I am now with the project is channel 20A 22, channel steel has two specifications, 22a and 22b 22, said channel steel waist length 22cm
22#a 220mm waist length 77mm legs long 7mm thick22#b 220mm waist length 79mm legs long 9mm thick
Standard 22# channel steel has 77 and 79, two widths.
