槽型鋼 H W T t 75 40 7 5 100 50 7.5 5 125 65 8 6 150 75 10 6.5 150 75 12.5 9 180 75 10.5 7 200 80 11 7.5 200 90 13.8 8 250 90 13 9 250 9
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