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17.5寸444.4mmIADC537三牙轮钻头镶齿三牙轮钻头水井钻头
JUMO PS6d444.4 penna a linea
17.5寸444.4mm IADC537三牙轮钻头 镶齿三牙轮钻头水井钻头
转换开关LW8 LW8D-10/4 D434.4 D443.4 D444.4 D464.4 D484.4
