■Basis of Tolerance
•Parallelism of both W planes 0.01 or less per 100mm
•Parallelism between the top and bottom planes 0.01 or less per 100mm
•Squareness of length/width 0.01 or less per 100mm
*In case of BCSWH/BCSWS, the direction of rolling may differ from the drawing.
Relief on the flange No relief when H=0 is designated.