渗碳轴承钢:G20CRMO G20CRNI2MO G20CR2NI4 G10CRNI3MO G20CRMN2MO 4118 9310 SCM22 SCM420 SNCM21 SNCM220 CDS12 CDS110 IBCD4 70NCD7 GCR9 GCR9SIMN GCR15SIMN G51986 G52986工具钢：T7 T8 T8Mn T9 T10 T11 T12 T13 T7A T8A T10A T12A T13A SK7 SK5 SK6 SK3 SK2 SK1 STC7 STC5 STC6 STC5 STC3 STC4 STC2 STC1 T72301 W1A-81/2 W1A-8 W1A-91/2 W1A101/2 W1A-111/2C70W2进口铜料如:无氧铜,紫铜,纯铜,三宝红铜,黄铜,青铜,磷铜,铍铜,钨铜,杯士铜,锡青铜,磷铜,锡钨铜,锡锌铜,铍青铜,锆青铜,铝青铜,铬锆铜,硬铜合金,洋白铜,铜板