... -20 (W7, 6), 8.3-24 (W7, 6), 9.5-24 (W8, 8), 11.2-24 (W10, 8), 12.4-24 (W11, 8 ... ), 12-38 (DW11, 8), 12.4-28 (W11, 6/8), 13.6-28 (W12, 8/10 ... );2.Section width (±4%): 205, 210, 210, 240 ... , 8.3-24, 9.5-24, 11.2-24, 12.4-24, 12-38, 12.4-28, 13.6-28