美国肯纳钨钢:CD750 CD650 CD636 CD-KR887 CD-337 CD-KR466 CD700 CD30 CD35 CD40 CD50 CD3150 CD30 CD70 CD-KR888 CD-KR824 K313 K801 K3580 K3030C KW120 K3520 K6 K8785 KW106 KF308 K855 KF310 KF312 KF315 K3060 K