NM450 3X1500 ¥6970.00 Q355低合金盘条12XC ¥5330.00 NM400 6X1500 ¥6970.00 宝钢线材12mm Q355B Q355C Q355D Q355NE ¥5330.00 Q460D圆钢 150X6000 ¥4670.00 Q355ME热卷 Q355NE Q690E BS690E宝钢高强板 ¥4420.00