IADC | 113,114 115,116,117,124,125,126,127,134,135,136,137,214, 215, 216, 217, 227, 237,244,246,247,314,315, 316 ,317,324, 325, 326, 327 ,415 ,417,425 ,435, 437,445,447,512,515,517,525, 527, 537,542,547,515, 525,535,545,612, 615,617, 625,627,635,637,732,832 |
牙轮钻头尺寸 | 3 1/2,3 7/8,4 1/2,5 1/2,6,6 1/2,7 1/2,8 1/2,8 3/4,9 1/2,9 5/8, 10 5/8,12 1/4,13 3/4,14 3/4,15 1/2,16,17 1/2,20,22,23,24,26,34 |