SS34 SS41 SS50 SS55 SB42 SB46 SB49 SB46M SB49M SM41A SM41B SM41C SM50A SM50B SM50C SM50YA SM50YB SM53B SM53C SM58 SPV24 SPV32 SPV46 SPV50 STH38 STH55 STH67 S10C S12C S15C S17C S20C S22C S25C S28C S30C S33C S35C S38C S40C S43C S45C S48C S50C S53C S55C S58C S9CK S15CK SCM415H SCM418H SCM420H SCM435H SCM440H SCM445H SCM822H SCr420H
进口耐特氮化白钢刀高速钢白钢刀的用途 高韧性高硬度白钢刀