MBN 11251 CR180BH-GI50/50-U奔驰标准低碳镀锌钢 ¥3900.00 MBN 11251 CR290Y490T-DP-GI50/50-U奔驰标准低碳镀锌钢 ¥3900.00 MBN 11251 CR330Y590T-DP-GI50/50-U奔驰标准低碳镀锌钢 ¥3900.00 MBN 11251 CR440Y780T-DP-GI50/50-U奔驰标准低碳镀锌钢 ¥3900.00 MBN 11251 CR590Y980T-DP-GI50/50-U奔驰标准低碳镀锌钢 ¥3900.00 HC340LA高强度低合金钢冷轧板卷供应宝钢首钢武钢 ¥4100.00