硬质钨钢球合金球48.1/48.105/48.11/48.115/48.12/48.125mm钢珠

打字bcv48.115 BCV476327 BCV48,115 BCV47,215 BCV47，215

丝印PUMD48.115 PUMD48，115 PUMD48,115 PUMD30,115 pumd24-115