0S050铜合金HT100 HT150 HT200 HT250 HT200 HT350 TTH300-06 TTH300-08 KTB350-04 KTB400-05 球墨铸铁QT400-18 QT400-15 QT900-2轧辊钢:9Cr2Mo 9Cr2MoV 718 P20不锈钢
13352963970李晓爱
laj882025-02-03 13:10:20
0S050铜合金HT100 HT150 HT200 HT250 HT200 HT350 TTH300-06 TTH300-08 KTB350-04 KTB400-05 球墨铸铁QT400-18 QT400-15 QT900-2轧辊钢:9Cr2Mo 9Cr2MoV 718 P20不锈钢
13352963970李晓爱
laj882025-02-03 13:10:20