PM-35-50新东透气钢排气钢塑胶模具钢多孔材料疏气钢板排气钢棒 ¥6.60 BM-1610 PORCERAX PM-35 透气钢棒 BMOLD PM40 BM-178 透气钢板 ¥6.80 T2紫铜棒红铜棒实心纯铜棒纯紫铜实心圆棒圆柱电极棒模具放电零切 ¥7.80 H59/H62/H65黄铜棒实心铜棒黄铜圆棒实心铜管铜棍圆铜条零切加工 ¥6.60 5CrMnMo圆棒5CrNiMo 55NCDV7 40CrMnMo 18Cr2Ni4WA钢板H13 ¥6.60 5CrNiMo 5CrMnMo 60Si2Mn 30CrMnSiA 35CrMnSiA 20MnCr ¥8.60