What does "I-beam 16-28b" mean?
Such as 16#, I-beam high, leg width, abdominal thickness, respectively: 160886The height, leg width and abdominal thickness of 28b were 28012410.5
The same kind of I-beam with the same waist height, if there are several different leg widths and waist thickness, should be marked on the right side of the model plus a, B, C.
The specifications of I-beam indicate the height of centimeters, such as 16#.
