23mnnimocr54钢板21crmovA圆钢16mo3钢15crA钢16mncrS5 ¥5.00 供应HPB59-3铜条H60黄铜H61铜板C3601铜棒C3604铜管 ¥40.00 供应1215圆钢冷拉12L14易切削六角钢批发零售1214方棒 ¥6.80 QT500-7球墨铸铁QT600-3圆棒QT400-15 QT700-2 供应零切 ¥6.00 供应QT450-10球墨铸铁圆棒QT400-18铁棒方QT800-2方棒QT400-15 ¥6.00 球墨铸铁FCD350-22圆棒 FCD450-10方棒 10-70-03切割 ¥5.00